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RetroArch/gfx/gl.c
TroggleMonkey 7bc8d79cb1 Give float FBO's priority over sRGB FBO's (half-undo commit 48331e82). 
sRGB FBO's should be a fallback when both are set to true: sRGB FBO's avoid
banding, but float FBO's also avoid clipping.  Users wanting to avoid both
might prefer float FBO's, but they're not supported on as many platforms,
so sRGB FBO's are the next best thing.  Also make errors more specific and
indent nearby #ifdef/#endif pairs to make them easier to match visually.
2014-05-31 00:55:08 -04:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2014 - Daniel De Matteis
* Copyright (C) 2012-2014 - Michael Lelli
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef _MSC_VER
#pragma comment(lib, "opengl32")
#endif
#include "../driver.h"
#include "../performance.h"
#include "scaler/scaler.h"
#include "image/image.h"
#include "../file.h"
#include <stdint.h>
#include "../libretro.h"
#include <stdio.h>
#include <string.h>
#include "../general.h"
#include <math.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gl_common.h"
#include "gfx_common.h"
#include "gfx_context.h"
#include "../compat/strl.h"
#ifdef HAVE_CG
#include "shader_cg.h"
#endif
#ifdef HAVE_GLSL
#include "shader_glsl.h"
#endif
#include "shader_common.h"
// Used for the last pass when rendering to the back buffer.
static const GLfloat vertexes_flipped[] = {
0, 1,
1, 1,
0, 0,
1, 0
};
// Used when rendering to an FBO.
// Texture coords have to be aligned with vertex coordinates.
static const GLfloat vertexes[] = {
0, 0,
1, 0,
0, 1,
1, 1
};
static const GLfloat tex_coords[] = {
0, 0,
1, 0,
0, 1,
1, 1
};
static const GLfloat white_color[] = {
1, 1, 1, 1,
1, 1, 1, 1,
1, 1, 1, 1,
1, 1, 1, 1,
};
static inline bool gl_query_extension(gl_t *gl, const char *ext)
{
bool ret = false;
if (gl->core_context)
{
#ifdef GL_NUM_EXTENSIONS
GLint i, exts;
exts = 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &exts);
for (i = 0; i < exts; i++)
{
const char *str = (const char*)glGetStringi(GL_EXTENSIONS, i);
if (str && strstr(str, ext))
{
ret = true;
break;
}
}
#endif
}
else
{
const char *str = (const char*)glGetString(GL_EXTENSIONS);
ret = str && strstr(str, ext);
}
RARCH_LOG("Querying GL extension: %s => %s\n",
ext, ret ? "exists" : "doesn't exist");
return ret;
}
#ifdef HAVE_OVERLAY
static void gl_render_overlay(void *data);
static void gl_overlay_vertex_geom(void *data,
unsigned image,
float x, float y, float w, float h);
static void gl_overlay_tex_geom(void *data,
unsigned image,
float x, float y, float w, float h);
#endif
static inline void set_texture_coords(GLfloat *coords, GLfloat xamt, GLfloat yamt)
{
coords[2] = xamt;
coords[6] = xamt;
coords[5] = yamt;
coords[7] = yamt;
}
#if defined(HAVE_EGL) && defined(HAVE_OPENGLES2)
static bool check_eglimage_proc(void)
{
return glEGLImageTargetTexture2DOES != NULL;
}
#endif
#ifdef HAVE_GL_SYNC
static bool check_sync_proc(gl_t *gl)
{
if (!gl_query_extension(gl, "ARB_sync"))
return false;
return glFenceSync && glDeleteSync && glClientWaitSync;
}
#endif
#ifndef HAVE_OPENGLES
static bool init_vao(gl_t *gl)
{
if (!gl->core_context && !gl_query_extension(gl, "ARB_vertex_array_object"))
return false;
if (!(glGenVertexArrays && glBindVertexArray && glDeleteVertexArrays))
return false;
glGenVertexArrays(1, &gl->vao);
return true;
}
#endif
#ifdef HAVE_FBO
#if defined(HAVE_PSGL)
#define glGenFramebuffers glGenFramebuffersOES
#define glBindFramebuffer glBindFramebufferOES
#define glFramebufferTexture2D glFramebufferTexture2DOES
#define glCheckFramebufferStatus glCheckFramebufferStatusOES
#define glDeleteFramebuffers glDeleteFramebuffersOES
#define glGenRenderbuffers glGenRenderbuffersOES
#define glBindRenderbuffer glBindRenderbufferOES
#define glFramebufferRenderbuffer glFramebufferRenderbufferOES
#define glRenderbufferStorage glRenderbufferStorageOES
#define glDeleteRenderbuffers glDeleteRenderbuffersOES
#define check_fbo_proc(gl) (true)
#elif !defined(HAVE_OPENGLES2)
static bool check_fbo_proc(gl_t *gl)
{
if (!gl->core_context && !gl_query_extension(gl, "ARB_framebuffer_object"))
return false;
return glGenFramebuffers && glBindFramebuffer && glFramebufferTexture2D &&
glCheckFramebufferStatus && glDeleteFramebuffers &&
glGenRenderbuffers && glBindRenderbuffer &&
glFramebufferRenderbuffer && glRenderbufferStorage &&
glDeleteRenderbuffers;
}
#else
#define check_fbo_proc(gl) (true)
#endif
#endif
////////////////// Shaders
static bool gl_shader_init(void *data)
{
bool ret;
gl_t *gl = (gl_t*)data;
const gl_shader_backend_t *backend = NULL;
const char *shader_path = (g_settings.video.shader_enable && *g_settings.video.shader_path) ?
g_settings.video.shader_path : NULL;
enum rarch_shader_type type = gfx_shader_parse_type(shader_path,
gl->core_context ? RARCH_SHADER_GLSL : DEFAULT_SHADER_TYPE);
ret = 0;
if (type == RARCH_SHADER_NONE)
{
RARCH_LOG("[GL]: Not loading any shader.\n");
return true;
}
switch (type)
{
#ifdef HAVE_CG
case RARCH_SHADER_CG:
RARCH_LOG("[GL]: Using Cg shader backend.\n");
backend = &gl_cg_backend;
break;
#endif
#ifdef HAVE_GLSL
case RARCH_SHADER_GLSL:
RARCH_LOG("[GL]: Using GLSL shader backend.\n");
backend = &gl_glsl_backend;
break;
#endif
default:
break;
}
if (!backend)
{
RARCH_ERR("[GL]: Didn't find valid shader backend. Continuing without shaders.\n");
return true;
}
#ifdef HAVE_GLSL
if (gl->core_context && RARCH_SHADER_CG)
{
RARCH_ERR("[GL]: Cg cannot be used with core GL context. Falling back to GLSL.\n");
backend = &gl_glsl_backend;
shader_path = NULL;
}
#endif
gl->shader = backend;
if (gl->shader && gl->shader->init)
ret = gl->shader->init(gl, shader_path);
if (!ret)
{
RARCH_ERR("[GL]: Failed to init shader, falling back to stock.\n");
ret = gl->shader->init(gl, NULL);
}
return ret;
}
static inline void gl_shader_deinit(void *data)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
if (gl->shader)
gl->shader->deinit();
gl->shader = NULL;
}
#ifndef NO_GL_FF_VERTEX
static void gl_set_coords(const struct gl_coords *coords)
{
glClientActiveTexture(GL_TEXTURE1);
glTexCoordPointer(2, GL_FLOAT, 0, coords->lut_tex_coord);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glClientActiveTexture(GL_TEXTURE0);
glVertexPointer(2, GL_FLOAT, 0, coords->vertex);
glEnableClientState(GL_VERTEX_ARRAY);
glColorPointer(4, GL_FLOAT, 0, coords->color);
glEnableClientState(GL_COLOR_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, coords->tex_coord);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
}
static void gl_disable_client_arrays(gl_t *gl)
{
if (!gl || gl->core_context)
return;
glClientActiveTexture(GL_TEXTURE1);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glClientActiveTexture(GL_TEXTURE0);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
#endif
#ifndef NO_GL_FF_MATRIX
static void gl_set_mvp(const void *data)
{
const math_matrix *mat = (const math_matrix*)data;
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(mat->data);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
#endif
void gl_shader_set_coords(void *data, const struct gl_coords *coords, const math_matrix *mat)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
bool ret_coords = false;
bool ret_mvp = false;
(void)ret_coords;
(void)ret_mvp;
if (gl->shader)
ret_coords = gl->shader->set_coords(coords);
if (gl->shader)
ret_mvp = gl->shader->set_mvp(gl, mat);
// Fall back to FF-style if needed and possible.
#ifndef NO_GL_FF_VERTEX
if (!ret_coords)
gl_set_coords(coords);
#endif
#ifndef NO_GL_FF_MATRIX
if (!ret_mvp)
gl_set_mvp(mat);
#endif
}
#define gl_shader_num(gl) ((gl->shader) ? gl->shader->num_shaders() : 0)
#define gl_shader_filter_type(gl, index, smooth) ((gl->shader) ? gl->shader->filter_type(index, smooth) : false)
#define gl_shader_wrap_type(gl, index) ((gl->shader) ? gl->shader->wrap_type(index) : RARCH_WRAP_BORDER)
#define gl_shader_mipmap_input(gl, index) ((gl->shader) ? gl->shader->mipmap_input(index) : false)
#ifdef IOS
// There is no default frame buffer on IOS.
void apple_bind_game_view_fbo(void);
#define gl_bind_backbuffer() apple_bind_game_view_fbo()
#else
#define gl_bind_backbuffer() glBindFramebuffer(RARCH_GL_FRAMEBUFFER, 0)
#endif
#ifdef HAVE_FBO
static void gl_shader_scale(void *data, unsigned index, struct gfx_fbo_scale *scale)
{
gl_t *gl = (gl_t*)data;
scale->valid = false;
if (gl->shader)
gl->shader->shader_scale(index, scale);
}
static void gl_compute_fbo_geometry(void *data, unsigned width, unsigned height,
unsigned vp_width, unsigned vp_height)
{
int i;
unsigned last_width, last_height, last_max_width, last_max_height;
gl_t *gl = (gl_t*)data;
last_width = width;
last_height = height;
last_max_width = gl->tex_w;
last_max_height = gl->tex_h;
GLint max_size = 0;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_size);
bool size_modified = false;
// Calculate viewports for FBOs.
for (i = 0; i < gl->fbo_pass; i++)
{
switch (gl->fbo_scale[i].type_x)
{
case RARCH_SCALE_INPUT:
gl->fbo_rect[i].img_width = last_width * gl->fbo_scale[i].scale_x;
gl->fbo_rect[i].max_img_width = last_max_width * gl->fbo_scale[i].scale_x;
break;
case RARCH_SCALE_ABSOLUTE:
gl->fbo_rect[i].img_width = gl->fbo_rect[i].max_img_width = gl->fbo_scale[i].abs_x;
break;
case RARCH_SCALE_VIEWPORT:
gl->fbo_rect[i].img_width = gl->fbo_rect[i].max_img_width = gl->fbo_scale[i].scale_x * vp_width;
break;
default:
break;
}
switch (gl->fbo_scale[i].type_y)
{
case RARCH_SCALE_INPUT:
gl->fbo_rect[i].img_height = last_height * gl->fbo_scale[i].scale_y;
gl->fbo_rect[i].max_img_height = last_max_height * gl->fbo_scale[i].scale_y;
break;
case RARCH_SCALE_ABSOLUTE:
gl->fbo_rect[i].img_height = gl->fbo_rect[i].max_img_height = gl->fbo_scale[i].abs_y;
break;
case RARCH_SCALE_VIEWPORT:
gl->fbo_rect[i].img_height = gl->fbo_rect[i].max_img_height = gl->fbo_scale[i].scale_y * vp_height;
break;
default:
break;
}
if (gl->fbo_rect[i].img_width > (unsigned)max_size)
{
size_modified = true;
gl->fbo_rect[i].img_width = max_size;
}
if (gl->fbo_rect[i].img_height > (unsigned)max_size)
{
size_modified = true;
gl->fbo_rect[i].img_height = max_size;
}
if (gl->fbo_rect[i].max_img_width > (unsigned)max_size)
{
size_modified = true;
gl->fbo_rect[i].max_img_width = max_size;
}
if (gl->fbo_rect[i].max_img_height > (unsigned)max_size)
{
size_modified = true;
gl->fbo_rect[i].max_img_height = max_size;
}
if (size_modified)
RARCH_WARN("FBO textures exceeded maximum size of GPU (%ux%u). Resizing to fit.\n", max_size, max_size);
last_width = gl->fbo_rect[i].img_width;
last_height = gl->fbo_rect[i].img_height;
last_max_width = gl->fbo_rect[i].max_img_width;
last_max_height = gl->fbo_rect[i].max_img_height;
}
}
static inline GLenum min_filter_to_mag(GLenum type)
{
switch (type)
{
case GL_LINEAR_MIPMAP_LINEAR:
return GL_LINEAR;
case GL_NEAREST_MIPMAP_NEAREST:
return GL_NEAREST;
default:
return type;
}
}
static void gl_create_fbo_textures(void *data)
{
int i;
gl_t *gl = (gl_t*)data;
if (!gl)
return;
glGenTextures(gl->fbo_pass, gl->fbo_texture);
GLuint base_filt = g_settings.video.smooth ? GL_LINEAR : GL_NEAREST;
GLuint base_mip_filt = g_settings.video.smooth ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST;
for (i = 0; i < gl->fbo_pass; i++)
{
glBindTexture(GL_TEXTURE_2D, gl->fbo_texture[i]);
bool mipmapped = gl_shader_mipmap_input(gl, i + 2);
GLenum min_filter = mipmapped ? base_mip_filt : base_filt;
bool smooth = false;
if (gl_shader_filter_type(gl, i + 2, &smooth))
min_filter = mipmapped ? (smooth ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST) : (smooth ? GL_LINEAR : GL_NEAREST);
GLenum mag_filter = min_filter_to_mag(min_filter);
enum gfx_wrap_type wrap = gl_shader_wrap_type(gl, i + 2);
GLenum wrap_enum = gl_wrap_type_to_enum(wrap);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap_enum);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap_enum);
bool fp_fbo = gl->fbo_scale[i].fp_fbo;
bool srgb_fbo = gl->fbo_scale[i].srgb_fbo;
if (fp_fbo)
{
if (!gl->has_fp_fbo)
RARCH_ERR("[GL]: Floating-point FBO was requested, but is not supported. Falling back to UNORM. Result may band/clip/etc.!\n");
}
else if (srgb_fbo)
{
if (!gl->has_srgb_fbo)
RARCH_ERR("[GL]: sRGB FBO was requested, but it is not supported. Falling back to UNORM. Result may have banding!\n");
}
#ifndef HAVE_OPENGLES2
if (fp_fbo && gl->has_fp_fbo)
{
RARCH_LOG("[GL]: FBO pass #%d is floating-point.\n", i);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F,
gl->fbo_rect[i].width, gl->fbo_rect[i].height,
0, GL_RGBA, GL_FLOAT, NULL);
}
else
#endif
{
#ifndef HAVE_OPENGLES
if (srgb_fbo && gl->has_srgb_fbo)
{
RARCH_LOG("[GL]: FBO pass #%d is sRGB.\n", i);
#ifdef HAVE_OPENGLES2
glTexImage2D(GL_TEXTURE_2D,
0, GL_SRGB_ALPHA_EXT,
gl->fbo_rect[i].width, gl->fbo_rect[i].height, 0,
GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE, NULL);
#else
glTexImage2D(GL_TEXTURE_2D,
0, GL_SRGB8_ALPHA8,
gl->fbo_rect[i].width, gl->fbo_rect[i].height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
#endif
}
else
#endif
{
#ifdef HAVE_OPENGLES2
glTexImage2D(GL_TEXTURE_2D,
0, GL_RGBA,
gl->fbo_rect[i].width, gl->fbo_rect[i].height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
#else
// Avoid potential performance reductions on particular platforms.
glTexImage2D(GL_TEXTURE_2D,
0, RARCH_GL_INTERNAL_FORMAT32,
gl->fbo_rect[i].width, gl->fbo_rect[i].height, 0,
RARCH_GL_TEXTURE_TYPE32, RARCH_GL_FORMAT32, NULL);
#endif
}
}
}
glBindTexture(GL_TEXTURE_2D, 0);
}
static bool gl_create_fbo_targets(void *data)
{
int i;
gl_t *gl = (gl_t*)data;
if (!gl)
return false;
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(gl->fbo_pass, gl->fbo);
for (i = 0; i < gl->fbo_pass; i++)
{
glBindFramebuffer(RARCH_GL_FRAMEBUFFER, gl->fbo[i]);
glFramebufferTexture2D(RARCH_GL_FRAMEBUFFER, RARCH_GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, gl->fbo_texture[i], 0);
GLenum status = glCheckFramebufferStatus(RARCH_GL_FRAMEBUFFER);
if (status != RARCH_GL_FRAMEBUFFER_COMPLETE)
goto error;
}
return true;
error:
glDeleteFramebuffers(gl->fbo_pass, gl->fbo);
RARCH_ERR("Failed to set up frame buffer objects. Multi-pass shading will not work.\n");
return false;
}
void gl_deinit_fbo(void *data)
{
gl_t *gl = (gl_t*)data;
if (gl->fbo_inited)
{
glDeleteTextures(gl->fbo_pass, gl->fbo_texture);
glDeleteFramebuffers(gl->fbo_pass, gl->fbo);
memset(gl->fbo_texture, 0, sizeof(gl->fbo_texture));
memset(gl->fbo, 0, sizeof(gl->fbo));
gl->fbo_inited = false;
gl->fbo_pass = 0;
}
}
void gl_init_fbo(void *data, unsigned width, unsigned height)
{
int i;
gl_t *gl = (gl_t*)data;
if (!gl || gl_shader_num(gl) == 0)
return;
struct gfx_fbo_scale scale, scale_last;
gl_shader_scale(gl, 1, &scale);
gl_shader_scale(gl, gl_shader_num(gl), &scale_last);
/* we always want FBO to be at least initialized on startup for consoles */
if (gl_shader_num(gl) == 1 && !scale.valid)
return;
if (!check_fbo_proc(gl))
{
RARCH_ERR("Failed to locate FBO functions. Won't be able to use render-to-texture.\n");
return;
}
gl->fbo_pass = gl_shader_num(gl) - 1;
if (scale_last.valid)
gl->fbo_pass++;
if (!scale.valid)
{
scale.scale_x = 1.0f;
scale.scale_y = 1.0f;
scale.type_x = scale.type_y = RARCH_SCALE_INPUT;
scale.valid = true;
}
gl->fbo_scale[0] = scale;
for (i = 1; i < gl->fbo_pass; i++)
{
gl_shader_scale(gl, i + 1, &gl->fbo_scale[i]);
if (!gl->fbo_scale[i].valid)
{
gl->fbo_scale[i].scale_x = gl->fbo_scale[i].scale_y = 1.0f;
gl->fbo_scale[i].type_x = gl->fbo_scale[i].type_y = RARCH_SCALE_INPUT;
gl->fbo_scale[i].valid = true;
}
}
gl_compute_fbo_geometry(gl, width, height, gl->win_width, gl->win_height);
for (i = 0; i < gl->fbo_pass; i++)
{
gl->fbo_rect[i].width = next_pow2(gl->fbo_rect[i].img_width);
gl->fbo_rect[i].height = next_pow2(gl->fbo_rect[i].img_height);
RARCH_LOG("Creating FBO %d @ %ux%u\n", i, gl->fbo_rect[i].width, gl->fbo_rect[i].height);
}
gl_create_fbo_textures(gl);
if (!gl_create_fbo_targets(gl))
{
glDeleteTextures(gl->fbo_pass, gl->fbo_texture);
RARCH_ERR("Failed to create FBO targets. Will continue without FBO.\n");
return;
}
gl->fbo_inited = true;
}
#ifndef HAVE_GCMGL
static void gl_deinit_hw_render(gl_t *gl)
{
if (!gl)
return;
context_bind_hw_render(gl, true);
if (gl->hw_render_fbo_init)
glDeleteFramebuffers(gl->textures, gl->hw_render_fbo);
if (gl->hw_render_depth_init)
glDeleteRenderbuffers(gl->textures, gl->hw_render_depth);
gl->hw_render_fbo_init = false;
context_bind_hw_render(gl, false);
}
static bool gl_init_hw_render(gl_t *gl, unsigned width, unsigned height)
{
// We can only share texture objects through contexts.
// FBOs are "abstract" objects and are not shared.
context_bind_hw_render(gl, true);
unsigned i;
RARCH_LOG("[GL]: Initializing HW render (%u x %u).\n", width, height);
GLint max_fbo_size = 0;
GLint max_renderbuffer_size = 0;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_fbo_size);
glGetIntegerv(RARCH_GL_MAX_RENDERBUFFER_SIZE, &max_renderbuffer_size);
RARCH_LOG("[GL]: Max texture size: %d px, renderbuffer size: %u px.\n", max_fbo_size, max_renderbuffer_size);
if (!check_fbo_proc(gl))
return false;
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(gl->textures, gl->hw_render_fbo);
bool depth = g_extern.system.hw_render_callback.depth;
bool stencil = g_extern.system.hw_render_callback.stencil;
#ifdef HAVE_OPENGLES2
if (stencil && !gl_query_extension(gl, "OES_packed_depth_stencil"))
return false;
#endif
if (depth)
{
glGenRenderbuffers(gl->textures, gl->hw_render_depth);
gl->hw_render_depth_init = true;
}
for (i = 0; i < gl->textures; i++)
{
glBindFramebuffer(RARCH_GL_FRAMEBUFFER, gl->hw_render_fbo[i]);
glFramebufferTexture2D(RARCH_GL_FRAMEBUFFER, RARCH_GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, gl->texture[i], 0);
if (depth)
{
glBindRenderbuffer(RARCH_GL_RENDERBUFFER, gl->hw_render_depth[i]);
glRenderbufferStorage(RARCH_GL_RENDERBUFFER, stencil ? RARCH_GL_DEPTH24_STENCIL8 : GL_DEPTH_COMPONENT16,
width, height);
glBindRenderbuffer(RARCH_GL_RENDERBUFFER, 0);
if (stencil)
{
#if defined(HAVE_OPENGLES2) || defined(HAVE_OPENGLES1) || defined(OSX_PPC)
// GLES2 is a bit weird, as always. :P
// There's no GL_DEPTH_STENCIL_ATTACHMENT like in desktop GL.
glFramebufferRenderbuffer(RARCH_GL_FRAMEBUFFER, RARCH_GL_DEPTH_ATTACHMENT,
RARCH_GL_RENDERBUFFER, gl->hw_render_depth[i]);
glFramebufferRenderbuffer(RARCH_GL_FRAMEBUFFER, RARCH_GL_STENCIL_ATTACHMENT,
RARCH_GL_RENDERBUFFER, gl->hw_render_depth[i]);
#else
// We use ARB FBO extensions, no need to check.
glFramebufferRenderbuffer(RARCH_GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
RARCH_GL_RENDERBUFFER, gl->hw_render_depth[i]);
#endif
}
else
{
glFramebufferRenderbuffer(RARCH_GL_FRAMEBUFFER, RARCH_GL_DEPTH_ATTACHMENT,
RARCH_GL_RENDERBUFFER, gl->hw_render_depth[i]);
}
}
GLenum status = glCheckFramebufferStatus(RARCH_GL_FRAMEBUFFER);
if (status != RARCH_GL_FRAMEBUFFER_COMPLETE)
{
RARCH_ERR("[GL]: Failed to create HW render FBO #%u, error: 0x%u.\n", i, (unsigned)status);
return false;
}
}
gl_bind_backbuffer();
gl->hw_render_fbo_init = true;
context_bind_hw_render(gl, false);
return true;
}
#endif
#endif
void gl_set_projection(void *data, struct gl_ortho *ortho, bool allow_rotate)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
// Calculate projection.
matrix_ortho(&gl->mvp_no_rot, ortho->left, ortho->right,
ortho->bottom, ortho->top, ortho->znear, ortho->zfar);
if (allow_rotate)
{
math_matrix rot;
matrix_rotate_z(&rot, M_PI * gl->rotation / 180.0f);
matrix_multiply(&gl->mvp, &rot, &gl->mvp_no_rot);
}
else
gl->mvp = gl->mvp_no_rot;
}
void gl_set_viewport(void *data, unsigned width, unsigned height, bool force_full, bool allow_rotate)
{
int x, y;
float device_aspect = 0.0f;
gl_t *gl = (gl_t*)data;
struct gl_ortho ortho = {0, 1, 0, 1, -1, 1};
if (!gl)
return;
x = 0;
y = 0;
if (gl->ctx_driver->translate_aspect)
device_aspect = context_translate_aspect_func(gl, width, height);
else
device_aspect = (float)width / height;
if (g_settings.video.scale_integer && !force_full)
{
gfx_scale_integer(&gl->vp, width, height, g_extern.system.aspect_ratio, gl->keep_aspect);
width = gl->vp.width;
height = gl->vp.height;
}
else if (gl->keep_aspect && !force_full)
{
float desired_aspect = g_extern.system.aspect_ratio;
float delta;
#if defined(HAVE_MENU)
if (g_settings.video.aspect_ratio_idx == ASPECT_RATIO_CUSTOM)
{
const struct rarch_viewport *custom =
&g_extern.console.screen.viewports.custom_vp;
// GL has bottom-left origin viewport.
x = custom->x;
y = gl->win_height - custom->y - custom->height;
width = custom->width;
height = custom->height;
}
else
#endif
{
if (fabsf(device_aspect - desired_aspect) < 0.0001f)
{
// If the aspect ratios of screen and desired aspect ratio are sufficiently equal (floating point stuff),
// assume they are actually equal.
}
else if (device_aspect > desired_aspect)
{
delta = (desired_aspect / device_aspect - 1.0f) / 2.0f + 0.5f;
x = (int)roundf(width * (0.5f - delta));
width = (unsigned)roundf(2.0f * width * delta);
}
else
{
delta = (device_aspect / desired_aspect - 1.0f) / 2.0f + 0.5f;
y = (int)roundf(height * (0.5f - delta));
height = (unsigned)roundf(2.0f * height * delta);
}
}
gl->vp.x = x;
gl->vp.y = y;
gl->vp.width = width;
gl->vp.height = height;
}
else
{
gl->vp.x = gl->vp.y = 0;
gl->vp.width = width;
gl->vp.height = height;
}
#if defined(RARCH_MOBILE)
// In portrait mode, we want viewport to gravitate to top of screen.
if (device_aspect < 1.0f)
gl->vp.y *= 2;
#endif
glViewport(gl->vp.x, gl->vp.y, gl->vp.width, gl->vp.height);
gl_set_projection(gl, &ortho, allow_rotate);
// Set last backbuffer viewport.
if (!force_full)
{
gl->vp_out_width = width;
gl->vp_out_height = height;
}
//RARCH_LOG("Setting viewport @ %ux%u\n", width, height);
}
static void gl_set_rotation(void *data, unsigned rotation)
{
gl_t *gl = (gl_t*)data;
struct gl_ortho ortho = {0, 1, 0, 1, -1, 1};
if (gl)
{
gl->rotation = 90 * rotation;
gl_set_projection(gl, &ortho, true);
}
}
#ifdef HAVE_FBO
static inline void gl_start_frame_fbo(gl_t *gl)
{
if (!gl)
return;
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
glBindFramebuffer(RARCH_GL_FRAMEBUFFER, gl->fbo[0]);
gl_set_viewport(gl, gl->fbo_rect[0].img_width, gl->fbo_rect[0].img_height, true, false);
// Need to preserve the "flipped" state when in FBO as well to have
// consistent texture coordinates.
// We will "flip" it in place on last pass.
gl->coords.vertex = vertexes;
#if defined(GL_FRAMEBUFFER_SRGB) && !defined(HAVE_OPENGLES)
if (gl->has_srgb_fbo)
glEnable(GL_FRAMEBUFFER_SRGB);
#endif
}
static void gl_check_fbo_dimensions(void *data)
{
int i;
gl_t *gl = (gl_t*)data;
if (!gl)
return;
// Check if we have to recreate our FBO textures.
for (i = 0; i < gl->fbo_pass; i++)
{
// Check proactively since we might suddently get sizes of tex_w width or tex_h height.
if (gl->fbo_rect[i].max_img_width > gl->fbo_rect[i].width ||
gl->fbo_rect[i].max_img_height > gl->fbo_rect[i].height)
{
unsigned img_width = gl->fbo_rect[i].max_img_width;
unsigned img_height = gl->fbo_rect[i].max_img_height;
unsigned max = img_width > img_height ? img_width : img_height;
unsigned pow2_size = next_pow2(max);
gl->fbo_rect[i].width = gl->fbo_rect[i].height = pow2_size;
glBindFramebuffer(RARCH_GL_FRAMEBUFFER, gl->fbo[i]);
glBindTexture(GL_TEXTURE_2D, gl->fbo_texture[i]);
glTexImage2D(GL_TEXTURE_2D,
0, RARCH_GL_INTERNAL_FORMAT32, gl->fbo_rect[i].width, gl->fbo_rect[i].height,
0, RARCH_GL_TEXTURE_TYPE32,
RARCH_GL_FORMAT32, NULL);
glFramebufferTexture2D(RARCH_GL_FRAMEBUFFER, RARCH_GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, gl->fbo_texture[i], 0);
GLenum status = glCheckFramebufferStatus(RARCH_GL_FRAMEBUFFER);
if (status != RARCH_GL_FRAMEBUFFER_COMPLETE)
RARCH_WARN("Failed to reinit FBO texture.\n");
RARCH_LOG("Recreating FBO texture #%d: %ux%u\n", i, gl->fbo_rect[i].width, gl->fbo_rect[i].height);
}
}
}
static void gl_frame_fbo(void *data, const struct gl_tex_info *tex_info)
{
int i;
gl_t *gl = (gl_t*)data;
GLfloat fbo_tex_coords[8] = {0.0f};
if (!gl)
return;
// Render the rest of our passes.
gl->coords.tex_coord = fbo_tex_coords;
// It's kinda handy ... :)
const struct gl_fbo_rect *prev_rect;
const struct gl_fbo_rect *rect;
struct gl_tex_info *fbo_info;
struct gl_tex_info fbo_tex_info[MAX_SHADERS];
unsigned fbo_tex_info_cnt = 0;
// Calculate viewports, texture coordinates etc, and render all passes from FBOs, to another FBO.
for (i = 1; i < gl->fbo_pass; i++)
{
prev_rect = &gl->fbo_rect[i - 1];
rect = &gl->fbo_rect[i];
fbo_info = &fbo_tex_info[i - 1];
GLfloat xamt = (GLfloat)prev_rect->img_width / prev_rect->width;
GLfloat yamt = (GLfloat)prev_rect->img_height / prev_rect->height;
set_texture_coords(fbo_tex_coords, xamt, yamt);
fbo_info->tex = gl->fbo_texture[i - 1];
fbo_info->input_size[0] = prev_rect->img_width;
fbo_info->input_size[1] = prev_rect->img_height;
fbo_info->tex_size[0] = prev_rect->width;
fbo_info->tex_size[1] = prev_rect->height;
memcpy(fbo_info->coord, fbo_tex_coords, sizeof(fbo_tex_coords));
fbo_tex_info_cnt++;
glBindFramebuffer(RARCH_GL_FRAMEBUFFER, gl->fbo[i]);
if (gl->shader)
gl->shader->use(gl, i + 1);
glBindTexture(GL_TEXTURE_2D, gl->fbo_texture[i - 1]);
#ifndef HAVE_GCMGL
if (gl_shader_mipmap_input(gl, i + 1))
glGenerateMipmap(GL_TEXTURE_2D);
#endif
glClear(GL_COLOR_BUFFER_BIT);
// Render to FBO with certain size.
gl_set_viewport(gl, rect->img_width, rect->img_height, true, false);
if (gl->shader)
gl->shader->set_params(gl, prev_rect->img_width, prev_rect->img_height,
prev_rect->width, prev_rect->height,
gl->vp.width, gl->vp.height, g_extern.frame_count,
tex_info, gl->prev_info, fbo_tex_info, fbo_tex_info_cnt);
gl_shader_set_coords(gl, &gl->coords, &gl->mvp);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
#if defined(GL_FRAMEBUFFER_SRGB) && !defined(HAVE_OPENGLES)
if (gl->has_srgb_fbo)
glDisable(GL_FRAMEBUFFER_SRGB);
#endif
// Render our last FBO texture directly to screen.
prev_rect = &gl->fbo_rect[gl->fbo_pass - 1];
GLfloat xamt = (GLfloat)prev_rect->img_width / prev_rect->width;
GLfloat yamt = (GLfloat)prev_rect->img_height / prev_rect->height;
set_texture_coords(fbo_tex_coords, xamt, yamt);
// Push final FBO to list.
fbo_info = &fbo_tex_info[gl->fbo_pass - 1];
fbo_info->tex = gl->fbo_texture[gl->fbo_pass - 1];
fbo_info->input_size[0] = prev_rect->img_width;
fbo_info->input_size[1] = prev_rect->img_height;
fbo_info->tex_size[0] = prev_rect->width;
fbo_info->tex_size[1] = prev_rect->height;
memcpy(fbo_info->coord, fbo_tex_coords, sizeof(fbo_tex_coords));
fbo_tex_info_cnt++;
// Render our FBO texture to back buffer.
gl_bind_backbuffer();
if (gl->shader)
gl->shader->use(gl, gl->fbo_pass + 1);
glBindTexture(GL_TEXTURE_2D, gl->fbo_texture[gl->fbo_pass - 1]);
#ifndef HAVE_GCMGL
if (gl_shader_mipmap_input(gl, gl->fbo_pass + 1))
glGenerateMipmap(GL_TEXTURE_2D);
#endif
glClear(GL_COLOR_BUFFER_BIT);
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
if (gl->shader)
gl->shader->set_params(gl, prev_rect->img_width, prev_rect->img_height,
prev_rect->width, prev_rect->height,
gl->vp.width, gl->vp.height, g_extern.frame_count,
tex_info, gl->prev_info, fbo_tex_info, fbo_tex_info_cnt);
gl->coords.vertex = gl->vertex_ptr;
gl_shader_set_coords(gl, &gl->coords, &gl->mvp);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
gl->coords.tex_coord = gl->tex_coords;
}
#endif
static void gl_update_resize(void *data)
{
gl_t *gl = (gl_t*)data;
#ifdef HAVE_FBO
if (!gl->fbo_inited)
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
else
{
gl_check_fbo_dimensions(gl);
// Go back to what we're supposed to do, render to FBO #0 :D
gl_start_frame_fbo(gl);
}
#else
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
#endif
}
static void gl_update_input_size(void *data, unsigned width, unsigned height, unsigned pitch, bool clear)
{
gl_t *gl = (gl_t*)data;
// Res change. Need to clear out texture.
if ((width != gl->last_width[gl->tex_index] || height != gl->last_height[gl->tex_index]) && gl->empty_buf)
{
gl->last_width[gl->tex_index] = width;
gl->last_height[gl->tex_index] = height;
if (clear)
{
glPixelStorei(GL_UNPACK_ALIGNMENT, get_alignment(width * sizeof(uint32_t)));
#if defined(HAVE_PSGL)
glBufferSubData(GL_TEXTURE_REFERENCE_BUFFER_SCE,
gl->tex_w * gl->tex_h * gl->tex_index * gl->base_size,
gl->tex_w * gl->tex_h * gl->base_size,
gl->empty_buf);
#else
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, gl->tex_w, gl->tex_h, gl->texture_type,
gl->texture_fmt, gl->empty_buf);
#endif
}
GLfloat xamt = (GLfloat)width / gl->tex_w;
GLfloat yamt = (GLfloat)height / gl->tex_h;
set_texture_coords(gl->tex_coords, xamt, yamt);
}
// We might have used different texture coordinates last frame. Edge case if resolution changes very rapidly.
else if (width != gl->last_width[(gl->tex_index + gl->textures - 1) % gl->textures] ||
height != gl->last_height[(gl->tex_index + gl->textures - 1) % gl->textures])
{
GLfloat xamt = (GLfloat)width / gl->tex_w;
GLfloat yamt = (GLfloat)height / gl->tex_h;
set_texture_coords(gl->tex_coords, xamt, yamt);
}
}
// It is *much* faster (order of mangnitude on my setup) to use a custom SIMD-optimized conversion routine than letting GL do it :(
#if !defined(HAVE_PSGL) && !defined(HAVE_OPENGLES2)
static inline void gl_convert_frame_rgb16_32(void *data, void *output, const void *input, int width, int height, int in_pitch)
{
gl_t *gl = (gl_t*)data;
if (width != gl->scaler.in_width || height != gl->scaler.in_height)
{
gl->scaler.in_width = width;
gl->scaler.in_height = height;
gl->scaler.out_width = width;
gl->scaler.out_height = height;
gl->scaler.in_fmt = SCALER_FMT_RGB565;
gl->scaler.out_fmt = SCALER_FMT_ARGB8888;
gl->scaler.scaler_type = SCALER_TYPE_POINT;
scaler_ctx_gen_filter(&gl->scaler);
}
gl->scaler.in_stride = in_pitch;
gl->scaler.out_stride = width * sizeof(uint32_t);
scaler_ctx_scale(&gl->scaler, output, input);
}
#endif
#ifdef HAVE_OPENGLES2
static inline void gl_convert_frame_argb8888_abgr8888(void *data, void *output, const void *input,
int width, int height, int in_pitch)
{
gl_t *gl = (gl_t*)data;
if (width != gl->scaler.in_width || height != gl->scaler.in_height)
{
gl->scaler.in_width = width;
gl->scaler.in_height = height;
gl->scaler.out_width = width;
gl->scaler.out_height = height;
gl->scaler.in_fmt = SCALER_FMT_ARGB8888;
gl->scaler.out_fmt = SCALER_FMT_ABGR8888;
gl->scaler.scaler_type = SCALER_TYPE_POINT;
scaler_ctx_gen_filter(&gl->scaler);
}
gl->scaler.in_stride = in_pitch;
gl->scaler.out_stride = width * sizeof(uint32_t);
scaler_ctx_scale(&gl->scaler, output, input);
}
#endif
static void gl_init_textures_data(void *data)
{
unsigned i;
gl_t *gl = (gl_t*)data;
for (i = 0; i < gl->textures; i++)
{
gl->last_width[i] = gl->tex_w;
gl->last_height[i] = gl->tex_h;
}
for (i = 0; i < gl->textures; i++)
{
gl->prev_info[i].tex = gl->texture[0];
gl->prev_info[i].input_size[0] = gl->tex_w;
gl->prev_info[i].tex_size[0] = gl->tex_w;
gl->prev_info[i].input_size[1] = gl->tex_h;
gl->prev_info[i].tex_size[1] = gl->tex_h;
memcpy(gl->prev_info[i].coord, tex_coords, sizeof(tex_coords));
}
}
static void gl_init_textures(void *data, const video_info_t *video)
{
unsigned i;
gl_t *gl = (gl_t*)data;
#if defined(HAVE_EGL) && defined(HAVE_OPENGLES2)
// Use regular textures if we use HW render.
gl->egl_images = !gl->hw_render_use && check_eglimage_proc() &&
gl->ctx_driver->init_egl_image_buffer && context_init_egl_image_buffer_func(gl, video);
#else
(void)video;
#endif
#ifdef HAVE_PSGL
if (!gl->pbo)
glGenBuffers(1, &gl->pbo);
glBindBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, gl->pbo);
glBufferData(GL_TEXTURE_REFERENCE_BUFFER_SCE,
gl->tex_w * gl->tex_h * gl->base_size * gl->textures, NULL, GL_STREAM_DRAW);
#endif
GLenum internal_fmt = gl->internal_fmt;
#ifndef HAVE_PSGL
GLenum texture_type = gl->texture_type;
GLenum texture_fmt = gl->texture_fmt;
#endif
// GLES is picky about which format we use here.
// Without extensions, we can *only* render to 16-bit FBOs.
#ifdef HAVE_OPENGLES2
if (gl->hw_render_use && gl->base_size == sizeof(uint32_t))
{
bool support_argb = gl_query_extension(gl, "OES_rgb8_rgba8") || gl_query_extension(gl, "ARM_argb8");
if (support_argb)
{
internal_fmt = GL_RGBA;
texture_type = GL_RGBA;
texture_fmt = GL_UNSIGNED_BYTE;
}
else
{
RARCH_WARN("[GL]: 32-bit FBO not supported. Falling back to 16-bit.\n");
internal_fmt = GL_RGB;
texture_type = GL_RGB;
texture_fmt = GL_UNSIGNED_SHORT_5_6_5;
}
}
#endif
glGenTextures(gl->textures, gl->texture);
for (i = 0; i < gl->textures; i++)
{
glBindTexture(GL_TEXTURE_2D, gl->texture[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, gl->wrap_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, gl->wrap_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl->tex_mag_filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl->tex_min_filter);
#ifdef HAVE_PSGL
glTextureReferenceSCE(GL_TEXTURE_2D, 1,
gl->tex_w, gl->tex_h, 0,
internal_fmt,
gl->tex_w * gl->base_size,
gl->tex_w * gl->tex_h * i * gl->base_size);
#else
if (!gl->egl_images)
{
glTexImage2D(GL_TEXTURE_2D,
0, internal_fmt, gl->tex_w, gl->tex_h, 0, texture_type,
texture_fmt, gl->empty_buf ? gl->empty_buf : NULL);
}
#endif
}
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
}
static inline void gl_copy_frame(void *data, const void *frame, unsigned width, unsigned height, unsigned pitch)
{
gl_t *gl = (gl_t*)data;
#if defined(HAVE_OPENGLES2)
#if defined(HAVE_EGL)
if (gl->egl_images)
{
EGLImageKHR img = 0;
bool new_egl = context_write_egl_image_func(gl, frame, width, height, pitch, (gl->base_size == 4), gl->tex_index, &img);
if (img == EGL_NO_IMAGE_KHR)
{
RARCH_ERR("[GL]: Failed to create EGL image.\n");
return;
}
if (new_egl)
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)img);
}
else
#endif
{
glPixelStorei(GL_UNPACK_ALIGNMENT, get_alignment(width * gl->base_size));
// Fallback for GLES devices without GL_BGRA_EXT.
if (gl->base_size == 4 && driver.gfx_use_rgba)
{
gl_convert_frame_argb8888_abgr8888(gl, gl->conv_buffer, frame, width, height, pitch);
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, gl->conv_buffer);
}
else if (gl->support_unpack_row_length)
{
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch / gl->base_size);
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, frame);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
}
else
{
// No GL_UNPACK_ROW_LENGTH ;(
unsigned pitch_width = pitch / gl->base_size;
if (width == pitch_width) // Happy path :D
{
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, frame);
}
else // Slower path.
{
unsigned h;
const unsigned line_bytes = width * gl->base_size;
uint8_t *dst = (uint8_t*)gl->conv_buffer; // This buffer is preallocated for this purpose.
const uint8_t *src = (const uint8_t*)frame;
for (h = 0; h < height; h++, src += pitch, dst += line_bytes)
memcpy(dst, src, line_bytes);
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, gl->conv_buffer);
}
}
}
#elif defined(HAVE_PSGL)
unsigned h;
size_t buffer_addr = gl->tex_w * gl->tex_h * gl->tex_index * gl->base_size;
size_t buffer_stride = gl->tex_w * gl->base_size;
const uint8_t *frame_copy = frame;
size_t frame_copy_size = width * gl->base_size;
uint8_t *buffer = (uint8_t*)glMapBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, GL_READ_WRITE) + buffer_addr;
for (h = 0; h < height; h++, buffer += buffer_stride, frame_copy += pitch)
memcpy(buffer, frame_copy, frame_copy_size);
glUnmapBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE);
#else
glPixelStorei(GL_UNPACK_ALIGNMENT, get_alignment(pitch));
if (gl->base_size == 2)
{
const void *buf = frame;
if (!gl->have_es2_compat)
{
// Convert to 32-bit textures on desktop GL.
gl_convert_frame_rgb16_32(gl, gl->conv_buffer, frame, width, height, pitch);
buf = gl->conv_buffer;
}
else
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch / gl->base_size);
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, buf);
}
else
{
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch / gl->base_size);
glTexSubImage2D(GL_TEXTURE_2D,
0, 0, 0, width, height, gl->texture_type,
gl->texture_fmt, frame);
}
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
#endif
}
static inline void gl_set_prev_texture(void *data, const struct gl_tex_info *tex_info)
{
gl_t *gl = (gl_t*)data;
memmove(gl->prev_info + 1, gl->prev_info, sizeof(*tex_info) * (gl->textures - 1));
memcpy(&gl->prev_info[0], tex_info, sizeof(*tex_info));
}
static inline void gl_set_shader_viewport(void *data, unsigned shader)
{
gl_t *gl = (gl_t*)data;
if (gl->shader)
gl->shader->use(gl, shader);
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
}
#if defined(HAVE_GL_ASYNC_READBACK) && defined(HAVE_MENU)
static void gl_pbo_async_readback(void *data)
{
gl_t *gl = (gl_t*)data;
glBindBuffer(GL_PIXEL_PACK_BUFFER, gl->pbo_readback[gl->pbo_readback_index++]);
gl->pbo_readback_index &= 3;
// 4 frames back, we can readback.
gl->pbo_readback_valid[gl->pbo_readback_index] = true;
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glPixelStorei(GL_PACK_ALIGNMENT, get_alignment(gl->vp.width * sizeof(uint32_t)));
// Read asynchronously into PBO buffer.
RARCH_PERFORMANCE_INIT(async_readback);
RARCH_PERFORMANCE_START(async_readback);
glReadBuffer(GL_BACK);
#ifdef HAVE_OPENGLES3
glReadPixels(gl->vp.x, gl->vp.y,
gl->vp.width, gl->vp.height,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
#else
glReadPixels(gl->vp.x, gl->vp.y,
gl->vp.width, gl->vp.height,
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
#endif
RARCH_PERFORMANCE_STOP(async_readback);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
}
#endif
#if defined(HAVE_MENU)
static inline void gl_draw_texture(void *data)
{
gl_t *gl = (gl_t*)data;
if (!gl->rgui_texture)
return;
const GLfloat color[] = {
1.0f, 1.0f, 1.0f, gl->rgui_texture_alpha,
1.0f, 1.0f, 1.0f, gl->rgui_texture_alpha,
1.0f, 1.0f, 1.0f, gl->rgui_texture_alpha,
1.0f, 1.0f, 1.0f, gl->rgui_texture_alpha,
};
gl->coords.vertex = vertexes_flipped;
gl->coords.tex_coord = tex_coords;
gl->coords.color = color;
glBindTexture(GL_TEXTURE_2D, gl->rgui_texture);
if (gl->shader)
gl->shader->use(gl, GL_SHADER_STOCK_BLEND);
gl_shader_set_coords(gl, &gl->coords, &gl->mvp_no_rot);
glEnable(GL_BLEND);
if (gl->rgui_texture_full_screen)
{
glViewport(0, 0, gl->win_width, gl->win_height);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glViewport(gl->vp.x, gl->vp.y, gl->vp.width, gl->vp.height);
}
else
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisable(GL_BLEND);
gl->coords.vertex = gl->vertex_ptr;
gl->coords.tex_coord = gl->tex_coords;
gl->coords.color = gl->white_color_ptr;
}
#endif
static bool gl_frame(void *data, const void *frame, unsigned width, unsigned height, unsigned pitch, const char *msg)
{
RARCH_PERFORMANCE_INIT(frame_run);
RARCH_PERFORMANCE_START(frame_run);
gl_t *gl = (gl_t*)data;
if (!gl)
return true;
context_bind_hw_render(gl, false);
#ifndef HAVE_OPENGLES
if (gl->core_context)
glBindVertexArray(gl->vao);
#endif
if (gl->shader)
gl->shader->use(gl, 1);
#ifdef IOS // Apparently the viewport is lost each frame, thanks apple.
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
#endif
#ifdef HAVE_FBO
// Render to texture in first pass.
if (gl->fbo_inited)
{
// Recompute FBO geometry.
// When width/height changes or window sizes change, we have to recalcuate geometry of our FBO.
gl_compute_fbo_geometry(gl, width, height, gl->vp_out_width, gl->vp_out_height);
gl_start_frame_fbo(gl);
}
#endif
if (gl->should_resize)
{
gl->should_resize = false;
context_set_resize_func(gl, gl->win_width, gl->win_height);
// On resize, we might have to recreate our FBOs due to "Viewport" scale, and set a new viewport.
gl_update_resize(gl);
}
if (frame) // Can be NULL for frame dupe / NULL render.
{
gl->tex_index = (gl->tex_index + 1) % gl->textures;
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
#ifdef HAVE_FBO
if (!gl->hw_render_fbo_init)
#endif
{
gl_update_input_size(gl, width, height, pitch, true);
RARCH_PERFORMANCE_INIT(copy_frame);
RARCH_PERFORMANCE_START(copy_frame);
gl_copy_frame(gl, frame, width, height, pitch);
RARCH_PERFORMANCE_STOP(copy_frame);
}
}
else
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
#ifndef HAVE_GCMGL
if (frame && gl->tex_mipmap) // No point regenerating mipmaps if there are no new frames.
glGenerateMipmap(GL_TEXTURE_2D);
#endif
// Have to reset rendering state which libretro core could easily have overridden.
#ifdef HAVE_FBO
if (gl->hw_render_fbo_init)
{
gl_update_input_size(gl, width, height, pitch, false);
if (!gl->fbo_inited)
{
gl_bind_backbuffer();
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
}
#ifndef HAVE_OPENGLES
if (!gl->core_context)
glEnable(GL_TEXTURE_2D);
#endif
glDisable(GL_DEPTH_TEST);
glDisable(GL_STENCIL_TEST);
glDisable(GL_CULL_FACE);
glDisable(GL_DITHER);
glDisable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
}
#endif
struct gl_tex_info tex_info = {0};
tex_info.tex = gl->texture[gl->tex_index];
tex_info.input_size[0] = width;
tex_info.input_size[1] = height;
tex_info.tex_size[0] = gl->tex_w;
tex_info.tex_size[1] = gl->tex_h;
memcpy(tex_info.coord, gl->tex_coords, sizeof(gl->tex_coords));
glClear(GL_COLOR_BUFFER_BIT);
if (g_settings.video.black_frame_insertion)
{
context_swap_buffers_func(gl);
glClear(GL_COLOR_BUFFER_BIT);
}
if (gl->shader && gl->shader->set_params)
gl->shader->set_params(gl, width, height,
gl->tex_w, gl->tex_h,
gl->vp.width, gl->vp.height,
g_extern.frame_count,
&tex_info, gl->prev_info, NULL, 0);
gl_shader_set_coords(gl, &gl->coords, &gl->mvp);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
#ifdef HAVE_FBO
if (gl->fbo_inited)
gl_frame_fbo(gl, &tex_info);
#endif
gl_set_prev_texture(gl, &tex_info);
#if defined(HAVE_MENU)
if (g_extern.lifecycle_state & (1ULL << MODE_MENU) && driver.menu_ctx && driver.menu_ctx->frame)
driver.menu_ctx->frame();
if (gl->rgui_texture_enable)
gl_draw_texture(gl);
#endif
if (msg && gl->font_ctx)
gl->font_ctx->render_msg(gl, msg, NULL);
#ifdef HAVE_OVERLAY
if (gl->overlay_enable)
gl_render_overlay(gl);
#endif
context_update_window_title_func(gl);
RARCH_PERFORMANCE_STOP(frame_run);
#ifdef HAVE_FBO
// Reset state which could easily mess up libretro core.
if (gl->hw_render_fbo_init)
{
if (gl->shader)
gl->shader->use(gl, 0);
glBindTexture(GL_TEXTURE_2D, 0);
#ifndef NO_GL_FF_VERTEX
gl_disable_client_arrays(gl);
#endif
}
#endif
#ifndef NO_GL_READ_PIXELS
// Screenshots.
if (gl->readback_buffer_screenshot)
{
glPixelStorei(GL_PACK_ALIGNMENT, 4);
#ifndef HAVE_OPENGLES
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glReadBuffer(GL_BACK);
#endif
glReadPixels(gl->vp.x, gl->vp.y,
gl->vp.width, gl->vp.height,
GL_RGBA, GL_UNSIGNED_BYTE, gl->readback_buffer_screenshot);
}
#ifdef HAVE_GL_ASYNC_READBACK
#ifdef HAVE_MENU
// Don't readback if we're in RGUI.
else if (gl->pbo_readback_enable && !gl->rgui_texture_enable)
gl_pbo_async_readback(gl);
#endif
#endif
#endif
context_swap_buffers_func(gl);
g_extern.frame_count++;
#ifdef HAVE_GL_SYNC
if (g_settings.video.hard_sync && gl->have_sync)
{
RARCH_PERFORMANCE_INIT(gl_fence);
RARCH_PERFORMANCE_START(gl_fence);
glClear(GL_COLOR_BUFFER_BIT);
gl->fences[gl->fence_count++] = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
while (gl->fence_count > g_settings.video.hard_sync_frames)
{
glClientWaitSync(gl->fences[0], GL_SYNC_FLUSH_COMMANDS_BIT, 1000000000);
glDeleteSync(gl->fences[0]);
gl->fence_count--;
memmove(gl->fences, gl->fences + 1, gl->fence_count * sizeof(GLsync));
}
RARCH_PERFORMANCE_STOP(gl_fence);
}
#endif
#ifndef HAVE_OPENGLES
if (gl->core_context)
glBindVertexArray(0);
#endif
context_bind_hw_render(gl, true);
return true;
}
#ifdef HAVE_OVERLAY
static void gl_free_overlay(gl_t *gl)
{
unsigned i;
if (!gl)
return;
for (i = 0; i < gl->overlays; i++)
if (gl->overlay[i].tex)
glDeleteTextures(1, &gl->overlay[i].tex);
free(gl->overlay);
gl->overlay = NULL;
gl->overlays = 0;
}
#endif
static void gl_free(void *data)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
context_bind_hw_render(gl, false);
#ifdef HAVE_GL_SYNC
if (gl->have_sync)
{
unsigned i;
for (i = 0; i < gl->fence_count; i++)
{
glClientWaitSync(gl->fences[i], GL_SYNC_FLUSH_COMMANDS_BIT, 1000000000);
glDeleteSync(gl->fences[i]);
}
gl->fence_count = 0;
}
#endif
if (gl->font_ctx)
gl->font_ctx->deinit(gl);
gl_shader_deinit(gl);
#ifndef NO_GL_FF_VERTEX
gl_disable_client_arrays(gl);
#endif
glDeleteTextures(gl->textures, gl->texture);
#if defined(HAVE_MENU)
if (gl->rgui_texture)
glDeleteTextures(1, &gl->rgui_texture);
#endif
#ifdef HAVE_OVERLAY
gl_free_overlay(gl);
#endif
#if defined(HAVE_PSGL)
glBindBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, 0);
glDeleteBuffers(1, &gl->pbo);
#endif
scaler_ctx_gen_reset(&gl->scaler);
#ifdef HAVE_GL_ASYNC_READBACK
if (gl->pbo_readback_enable)
{
glDeleteBuffers(4, gl->pbo_readback);
scaler_ctx_gen_reset(&gl->pbo_readback_scaler);
}
#endif
#ifdef HAVE_FBO
gl_deinit_fbo(gl);
#ifndef HAVE_GCMGL
gl_deinit_hw_render(gl);
#endif
#endif
#ifndef HAVE_OPENGLES
if (gl->core_context)
{
glBindVertexArray(0);
glDeleteVertexArrays(1, &gl->vao);
}
#endif
context_destroy_func(gl);
free(gl->empty_buf);
free(gl->conv_buffer);
free(gl);
}
static void gl_set_nonblock_state(void *data, bool state)
{
RARCH_LOG("GL VSync => %s\n", state ? "off" : "on");
gl_t *gl = (gl_t*)data;
if (gl)
{
context_bind_hw_render(gl, false);
context_swap_interval_func(gl, state ? 0 : g_settings.video.swap_interval);
context_bind_hw_render(gl, true);
}
}
static bool resolve_extensions(gl_t *gl)
{
#ifndef HAVE_OPENGLES
gl->core_context = g_extern.system.hw_render_callback.context_type == RETRO_HW_CONTEXT_OPENGL_CORE;
if (gl->core_context)
RARCH_LOG("[GL]: Using Core GL context.\n");
if (gl->core_context &&
!init_vao(gl))
{
RARCH_ERR("[GL]: Failed to init VAOs.\n");
return false;
}
// GL_RGB565 internal format support.
// Even though es2 support is claimed, the format is not supported on older ATI catalyst drivers.
// The speed gain from using GL_RGB565 is worth adding some workarounds for.
const char *vendor = (const char*)glGetString(GL_VENDOR);
const char *renderer = (const char*)glGetString(GL_RENDERER);
if (vendor && renderer && (strstr(vendor, "ATI") || strstr(renderer, "ATI")))
RARCH_LOG("[GL]: ATI card detected, skipping check for GL_RGB565 support.\n");
else
gl->have_es2_compat = gl_query_extension(gl, "ARB_ES2_compatibility");
#endif
#ifdef HAVE_GL_SYNC
gl->have_sync = check_sync_proc(gl);
if (gl->have_sync && g_settings.video.hard_sync)
RARCH_LOG("[GL]: Using ARB_sync to reduce latency.\n");
#endif
driver.gfx_use_rgba = false;
#ifdef HAVE_OPENGLES2
if (gl_query_extension(gl, "BGRA8888")) // There are both APPLE and EXT variants.
RARCH_LOG("[GL]: BGRA8888 extension found for GLES.\n");
else
{
driver.gfx_use_rgba = true;
RARCH_WARN("[GL]: GLES implementation does not have BGRA8888 extension.\n"
"32-bit path will require conversion.\n");
}
gl->support_unpack_row_length = false;
if (gl_query_extension(gl, "GL_EXT_unpack_subimage"))
{
RARCH_LOG("[GL]: Extension GL_EXT_unpack_subimage, can copy textures faster using UNPACK_ROW_LENGTH.\n");
gl->support_unpack_row_length = true;
}
// No extensions for float FBO currently.
gl->has_srgb_fbo = gl_query_extension(gl, "EXT_sRGB");
#else
#ifdef HAVE_FBO
// Float FBO is core in 3.2.
#ifdef HAVE_GCMGL
gl->has_fp_fbo = false; // FIXME - rewrite GL implementation
#else
gl->has_fp_fbo = gl->core_context || gl_query_extension(gl, "ARB_texture_float");
#endif
gl->has_srgb_fbo = gl->core_context || (gl_query_extension(gl, "EXT_texture_sRGB") && gl_query_extension(gl, "ARB_framebuffer_sRGB"));
#endif
#endif
#ifdef GL_DEBUG
// Useful for debugging, but kinda obnoxious otherwise.
RARCH_LOG("[GL]: Supported extensions:\n");
if (gl->core_context)
{
#ifdef GL_NUM_EXTENSIONS
GLint exts = 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &exts);
for (GLint i = 0; i < exts; i++)
{
const char *ext = (const char*)glGetStringi(GL_EXTENSIONS, i);
if (ext)
RARCH_LOG("\t%s\n", ext);
}
#endif
}
else
{
const char *ext = (const char*)glGetString(GL_EXTENSIONS);
if (ext)
{
struct string_list *list = string_split(ext, " ");
for (size_t i = 0; i < list->size; i++)
RARCH_LOG("\t%s\n", list->elems[i].data);
string_list_free(list);
}
}
#endif
return true;
}
static inline void gl_set_texture_fmts(void *data, bool rgb32)
{
gl_t *gl = (gl_t*)data;
gl->internal_fmt = rgb32 ? RARCH_GL_INTERNAL_FORMAT32 : RARCH_GL_INTERNAL_FORMAT16;
gl->texture_type = rgb32 ? RARCH_GL_TEXTURE_TYPE32 : RARCH_GL_TEXTURE_TYPE16;
gl->texture_fmt = rgb32 ? RARCH_GL_FORMAT32 : RARCH_GL_FORMAT16;
gl->base_size = rgb32 ? sizeof(uint32_t) : sizeof(uint16_t);
if (driver.gfx_use_rgba && rgb32)
{
gl->internal_fmt = GL_RGBA;
gl->texture_type = GL_RGBA;
}
#ifndef HAVE_OPENGLES
if (!rgb32 && gl->have_es2_compat) // Use GL_RGB565 instead.
{
RARCH_LOG("[GL]: Using GL_RGB565 for texture uploads.\n");
gl->internal_fmt = RARCH_GL_INTERNAL_FORMAT16_565;
gl->texture_type = RARCH_GL_TEXTURE_TYPE16_565;
gl->texture_fmt = RARCH_GL_FORMAT16_565;
}
#endif
}
#ifdef HAVE_GL_ASYNC_READBACK
static void gl_init_pbo_readback(void *data)
{
unsigned i;
gl_t *gl = (gl_t*)data;
// Only bother with this if we're doing FFmpeg GPU recording.
gl->pbo_readback_enable = g_settings.video.gpu_record && g_extern.recording;
if (!gl->pbo_readback_enable)
return;
RARCH_LOG("[GL]: Async PBO readback enabled.\n");
glGenBuffers(4, gl->pbo_readback);
for (i = 0; i < 4; i++)
{
glBindBuffer(GL_PIXEL_PACK_BUFFER, gl->pbo_readback[i]);
glBufferData(GL_PIXEL_PACK_BUFFER, gl->vp.width * gl->vp.height * sizeof(uint32_t),
NULL, GL_STREAM_READ);
}
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
#ifndef HAVE_OPENGLES3
struct scaler_ctx *scaler = &gl->pbo_readback_scaler;
scaler->in_width = gl->vp.width;
scaler->in_height = gl->vp.height;
scaler->out_width = gl->vp.width;
scaler->out_height = gl->vp.height;
scaler->in_stride = gl->vp.width * sizeof(uint32_t);
scaler->out_stride = gl->vp.width * 3;
scaler->in_fmt = SCALER_FMT_ARGB8888;
scaler->out_fmt = SCALER_FMT_BGR24;
scaler->scaler_type = SCALER_TYPE_POINT;
if (!scaler_ctx_gen_filter(scaler))
{
gl->pbo_readback_enable = false;
RARCH_ERR("Failed to init pixel conversion for PBO.\n");
glDeleteBuffers(4, gl->pbo_readback);
}
#endif
}
#endif
static const gfx_ctx_driver_t *gl_get_context(gl_t *gl)
{
const struct retro_hw_render_callback *cb = &g_extern.system.hw_render_callback;
unsigned major = cb->version_major;
unsigned minor = cb->version_minor;
#ifdef HAVE_OPENGLES
enum gfx_ctx_api api = GFX_CTX_OPENGL_ES_API;
const char *api_name = "OpenGL ES 2.0";
#ifdef HAVE_OPENGLES3
if (cb->context_type == RETRO_HW_CONTEXT_OPENGLES3)
{
major = 3;
minor = 0;
api_name = "OpenGL ES 3.0";
}
else if (cb->context_type == RETRO_HW_CONTEXT_OPENGLES_VERSION)
api_name = "OpenGL ES 3.1+";
#endif
#else
enum gfx_ctx_api api = GFX_CTX_OPENGL_API;
const char *api_name = "OpenGL";
#endif
gl->shared_context_use = g_settings.video.shared_context && cb->context_type != RETRO_HW_CONTEXT_NONE;
if (*g_settings.video.gl_context)
{
const gfx_ctx_driver_t *ctx = gfx_ctx_find_driver(g_settings.video.gl_context);
if (ctx)
{
if (!ctx->bind_api(gl, api, major, minor))
{
RARCH_ERR("Failed to bind API %s to context %s.\n", api_name, g_settings.video.gl_context);
return NULL;
}
// Enables or disables offscreen HW context.
if (ctx->bind_hw_render)
ctx->bind_hw_render(gl, gl->shared_context_use);
if (!ctx->init(gl))
{
RARCH_ERR("Failed to init GL context: %s.\n", ctx->ident);
return NULL;
}
}
else
{
RARCH_ERR("Didn't find GL context: %s.\n", g_settings.video.gl_context);
return NULL;
}
return ctx;
}
else
return gfx_ctx_init_first(gl, api, major, minor, gl->shared_context_use);
}
#ifdef GL_DEBUG
#ifdef HAVE_OPENGLES2
#define DEBUG_CALLBACK_TYPE GL_APIENTRY
// *sigh*
#define GL_DEBUG_SOURCE_API GL_DEBUG_SOURCE_API_KHR
#define GL_DEBUG_SOURCE_WINDOW_SYSTEM GL_DEBUG_SOURCE_WINDOW_SYSTEM_KHR
#define GL_DEBUG_SOURCE_SHADER_COMPILER GL_DEBUG_SOURCE_SHADER_COMPILER_KHR
#define GL_DEBUG_SOURCE_THIRD_PARTY GL_DEBUG_SOURCE_THIRD_PARTY_KHR
#define GL_DEBUG_SOURCE_APPLICATION GL_DEBUG_SOURCE_APPLICATION_KHR
#define GL_DEBUG_SOURCE_OTHER GL_DEBUG_SOURCE_OTHER_KHR
#define GL_DEBUG_TYPE_ERROR GL_DEBUG_TYPE_ERROR_KHR
#define GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_KHR
#define GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_KHR
#define GL_DEBUG_TYPE_PORTABILITY GL_DEBUG_TYPE_PORTABILITY_KHR
#define GL_DEBUG_TYPE_PERFORMANCE GL_DEBUG_TYPE_PERFORMANCE_KHR
#define GL_DEBUG_TYPE_MARKER GL_DEBUG_TYPE_MARKER_KHR
#define GL_DEBUG_TYPE_PUSH_GROUP GL_DEBUG_TYPE_PUSH_GROUP_KHR
#define GL_DEBUG_TYPE_POP_GROUP GL_DEBUG_TYPE_POP_GROUP_KHR
#define GL_DEBUG_TYPE_OTHER GL_DEBUG_TYPE_OTHER_KHR
#define GL_DEBUG_SEVERITY_HIGH GL_DEBUG_SEVERITY_HIGH_KHR
#define GL_DEBUG_SEVERITY_MEDIUM GL_DEBUG_SEVERITY_MEDIUM_KHR
#define GL_DEBUG_SEVERITY_LOW GL_DEBUG_SEVERITY_LOW_KHR
#else
#define DEBUG_CALLBACK_TYPE APIENTRY
#endif
static void DEBUG_CALLBACK_TYPE gl_debug_cb(GLenum source, GLenum type,
GLuint id, GLenum severity, GLsizei length,
const GLchar *message, void *userParam)
{
(void)id;
(void)length;
gl_t *gl = (gl_t*)userParam; // Useful for debugger.
(void)gl;
const char *src;
switch (source)
{
case GL_DEBUG_SOURCE_API: src = "API"; break;
case GL_DEBUG_SOURCE_WINDOW_SYSTEM: src = "Window system"; break;
case GL_DEBUG_SOURCE_SHADER_COMPILER: src = "Shader compiler"; break;
case GL_DEBUG_SOURCE_THIRD_PARTY: src = "3rd party"; break;
case GL_DEBUG_SOURCE_APPLICATION: src = "Application"; break;
case GL_DEBUG_SOURCE_OTHER: src = "Other"; break;
default: src = "Unknown"; break;
}
const char *typestr;
switch (type)
{
case GL_DEBUG_TYPE_ERROR: typestr = "Error"; break;
case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR: typestr = "Deprecated behavior"; break;
case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR: typestr = "Undefined behavior"; break;
case GL_DEBUG_TYPE_PORTABILITY: typestr = "Portability"; break;
case GL_DEBUG_TYPE_PERFORMANCE: typestr = "Performance"; break;
case GL_DEBUG_TYPE_MARKER: typestr = "Marker"; break;
case GL_DEBUG_TYPE_PUSH_GROUP: typestr = "Push group"; break;
case GL_DEBUG_TYPE_POP_GROUP: typestr = "Pop group"; break;
case GL_DEBUG_TYPE_OTHER: typestr = "Other"; break;
default: typestr = "Unknown"; break;
}
switch (severity)
{
case GL_DEBUG_SEVERITY_HIGH:
RARCH_ERR("[GL debug (High, %s, %s)]: %s\n", src, typestr, message);
break;
case GL_DEBUG_SEVERITY_MEDIUM:
RARCH_WARN("[GL debug (Medium, %s, %s)]: %s\n", src, typestr, message);
break;
case GL_DEBUG_SEVERITY_LOW:
RARCH_LOG("[GL debug (Low, %s, %s)]: %s\n", src, typestr, message);
break;
}
}
static void gl_begin_debug(gl_t *gl)
{
if (gl_query_extension(gl, "KHR_debug"))
{
#ifdef HAVE_OPENGLES2
glDebugMessageCallbackKHR(gl_debug_cb, gl);
glDebugMessageControlKHR(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_KHR);
#else
glDebugMessageCallback(gl_debug_cb, gl);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
#endif
}
#ifndef HAVE_OPENGLES2
else if (gl_query_extension(gl, "ARB_debug_output"))
{
glDebugMessageCallbackARB(gl_debug_cb, gl);
glDebugMessageControlARB(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
}
#endif
else
RARCH_ERR("Neither GL_KHR_debug nor GL_ARB_debug_output are implemented. Cannot start GL debugging.\n");
}
#endif
static void *gl_init(const video_info_t *video, const input_driver_t **input, void **input_data)
{
#ifdef _WIN32
gfx_set_dwm();
#endif
gl_t *gl = (gl_t*)calloc(1, sizeof(gl_t));
if (!gl)
return NULL;
gl->ctx_driver = gl_get_context(gl);
if (!gl->ctx_driver)
{
free(gl);
return NULL;
}
gl->video_info = *video;
RARCH_LOG("Found GL context: %s\n", gl->ctx_driver->ident);
context_get_video_size_func(gl, &gl->full_x, &gl->full_y);
RARCH_LOG("Detecting screen resolution %ux%u.\n", gl->full_x, gl->full_y);
context_swap_interval_func(gl, video->vsync ? g_settings.video.swap_interval : 0);
unsigned win_width = video->width;
unsigned win_height = video->height;
if (video->fullscreen && (win_width == 0) && (win_height == 0))
{
win_width = gl->full_x;
win_height = gl->full_y;
}
if (!context_set_video_mode_func(gl, win_width, win_height, video->fullscreen))
{
free(gl);
return NULL;
}
glGetError(); // Clear out potential error flags incase we use cached context.
const char *vendor = (const char*)glGetString(GL_VENDOR);
const char *renderer = (const char*)glGetString(GL_RENDERER);
RARCH_LOG("[GL]: Vendor: %s, Renderer: %s.\n", vendor, renderer);
const char *version = (const char*)glGetString(GL_VERSION);
RARCH_LOG("[GL]: Version: %s.\n", version);
#ifndef RARCH_CONSOLE
rglgen_resolve_symbols(gl->ctx_driver->get_proc_address);
#endif
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
if (!resolve_extensions(gl))
{
context_destroy_func(gl);
free(gl);
return NULL;
}
#ifdef GL_DEBUG
gl_begin_debug(gl);
#endif
gl->vsync = video->vsync;
gl->fullscreen = video->fullscreen;
// Get real known video size, which might have been altered by context.
context_get_video_size_func(gl, &gl->win_width, &gl->win_height);
RARCH_LOG("GL: Using resolution %ux%u\n", gl->win_width, gl->win_height);
if (gl->full_x || gl->full_y) // We got bogus from gfx_ctx_get_video_size. Replace.
{
gl->full_x = gl->win_width;
gl->full_y = gl->win_height;
}
struct retro_hw_render_callback *hw_render = &g_extern.system.hw_render_callback;
gl->vertex_ptr = hw_render->bottom_left_origin ? vertexes : vertexes_flipped;
// Better pipelining with GPU due to synchronous glSubTexImage. Multiple async PBOs would be an alternative,
// but still need multiple textures with PREV.
gl->textures = 4;
#ifdef HAVE_FBO
gl->hw_render_use = hw_render->context_type != RETRO_HW_CONTEXT_NONE;
if (gl->hw_render_use)
{
gl->textures = 1; // All on GPU, no need to excessively create textures.
#ifdef GL_DEBUG
context_bind_hw_render(gl, true);
gl_begin_debug(gl);
context_bind_hw_render(gl, false);
#endif
}
#endif
gl->white_color_ptr = white_color;
#ifdef HAVE_GLSL
gl_glsl_set_get_proc_address(gl->ctx_driver->get_proc_address);
gl_glsl_set_context_type(gl->core_context, hw_render->version_major, hw_render->version_minor);
#endif
if (!gl_shader_init(gl))
{
RARCH_ERR("[GL]: Shader init failed.\n");
context_destroy_func(gl);
free(gl);
return NULL;
}
if (gl->shader)
{
unsigned minimum = gl->shader->get_prev_textures();
gl->textures = max(minimum + 1, gl->textures);
}
RARCH_LOG("GL: Using %u textures.\n", gl->textures);
RARCH_LOG("GL: Loaded %u program(s).\n", gl_shader_num(gl));
gl->tex_w = RARCH_SCALE_BASE * video->input_scale;
gl->tex_h = RARCH_SCALE_BASE * video->input_scale;
gl->keep_aspect = video->force_aspect;
// Apparently need to set viewport for passes when we aren't using FBOs.
gl_set_shader_viewport(gl, 0);
gl_set_shader_viewport(gl, 1);
bool force_smooth = false;
gl->tex_mipmap = gl_shader_mipmap_input(gl, 1);
if (gl_shader_filter_type(gl, 1, &force_smooth))
gl->tex_min_filter = gl->tex_mipmap ? (force_smooth ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST) : (force_smooth ? GL_LINEAR : GL_NEAREST);
else
gl->tex_min_filter = gl->tex_mipmap ? (video->smooth ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST) : (video->smooth ? GL_LINEAR : GL_NEAREST);
gl->tex_mag_filter = min_filter_to_mag(gl->tex_min_filter);
gl->wrap_mode = gl_wrap_type_to_enum(gl_shader_wrap_type(gl, 1));
gl_set_texture_fmts(gl, video->rgb32);
#ifndef HAVE_OPENGLES
if (!gl->core_context)
glEnable(GL_TEXTURE_2D);
#endif
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glDisable(GL_DITHER);
memcpy(gl->tex_coords, tex_coords, sizeof(tex_coords));
gl->coords.vertex = gl->vertex_ptr;
gl->coords.tex_coord = gl->tex_coords;
gl->coords.color = gl->white_color_ptr;
gl->coords.lut_tex_coord = tex_coords;
// Empty buffer that we use to clear out the texture with on res change.
gl->empty_buf = calloc(sizeof(uint32_t), gl->tex_w * gl->tex_h);
#if !defined(HAVE_PSGL)
gl->conv_buffer = calloc(sizeof(uint32_t), gl->tex_w * gl->tex_h);
if (!gl->conv_buffer)
{
context_destroy_func(gl);
free(gl);
return NULL;
}
#endif
gl_init_textures(gl, video);
gl_init_textures_data(gl);
#ifdef HAVE_FBO
// Set up render to texture.
gl_init_fbo(gl, gl->tex_w, gl->tex_h);
#ifndef HAVE_GCMGL
if (gl->hw_render_use && !gl_init_hw_render(gl, gl->tex_w, gl->tex_h))
{
context_destroy_func(gl);
free(gl);
return NULL;
}
#endif
#endif
if (input && input_data)
context_input_driver_func(gl, input, input_data);
#ifndef RARCH_CONSOLE
if (g_settings.video.font_enable)
#endif
{
gl->font_ctx = gl_font_init_first(gl, g_settings.video.font_path, g_settings.video.font_size,
gl->win_width, gl->win_height);
}
#ifdef HAVE_GL_ASYNC_READBACK
gl_init_pbo_readback(gl);
#endif
if (!gl_check_error())
{
context_destroy_func(gl);
free(gl);
return NULL;
}
context_bind_hw_render(gl, true);
return gl;
}
static bool gl_alive(void *data)
{
gl_t *gl = (gl_t*)data;
bool quit = false, resize = false;
context_check_window_func(gl, &quit,
&resize, &gl->win_width, &gl->win_height,
g_extern.frame_count);
if (quit)
gl->quitting = true;
else if (resize)
gl->should_resize = true;
return !gl->quitting;
}
static bool gl_focus(void *data)
{
gl_t *gl = (gl_t*)data;
return gl && context_has_focus_func(gl);
}
static void gl_update_tex_filter_frame(gl_t *gl)
{
unsigned i;
bool smooth = false;
if (!gl)
return;
context_bind_hw_render(gl, false);
if (!gl_shader_filter_type(gl, 1, &smooth))
smooth = g_settings.video.smooth;
GLenum wrap_mode = gl_wrap_type_to_enum(gl_shader_wrap_type(gl, 1));
gl->tex_mipmap = gl_shader_mipmap_input(gl, 1);
gl->video_info.smooth = smooth;
GLuint new_filt = gl->tex_mipmap ? (smooth ? GL_LINEAR_MIPMAP_LINEAR : GL_NEAREST_MIPMAP_NEAREST) : (smooth ? GL_LINEAR : GL_NEAREST);
if (new_filt == gl->tex_min_filter && wrap_mode == gl->wrap_mode)
return;
gl->tex_min_filter = new_filt;
gl->tex_mag_filter = min_filter_to_mag(gl->tex_min_filter);
gl->wrap_mode = wrap_mode;
for (i = 0; i < gl->textures; i++)
{
if (gl->texture[i])
{
glBindTexture(GL_TEXTURE_2D, gl->texture[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, gl->wrap_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, gl->wrap_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl->tex_mag_filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl->tex_min_filter);
}
}
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
context_bind_hw_render(gl, true);
}
#if defined(HAVE_GLSL) || defined(HAVE_CG)
static bool gl_set_shader(void *data, enum rarch_shader_type type, const char *path)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return false;
context_bind_hw_render(gl, false);
if (type == RARCH_SHADER_NONE)
return false;
gl_shader_deinit(gl);
switch (type)
{
#ifdef HAVE_GLSL
case RARCH_SHADER_GLSL:
gl->shader = &gl_glsl_backend;
break;
#endif
#ifdef HAVE_CG
case RARCH_SHADER_CG:
gl->shader = &gl_cg_backend;
break;
#endif
default:
gl->shader = NULL;
break;
}
if (!gl->shader)
{
RARCH_ERR("[GL]: Cannot find shader core for path: %s.\n", path);
context_bind_hw_render(gl, true);
return false;
}
#ifdef HAVE_FBO
gl_deinit_fbo(gl);
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
#endif
if (!gl->shader->init(gl, path))
{
RARCH_WARN("[GL]: Failed to set multipass shader. Falling back to stock.\n");
bool ret = gl->shader->init(gl, NULL);
if (!ret)
gl->shader = NULL;
context_bind_hw_render(gl, true);
return false;
}
gl_update_tex_filter_frame(gl);
if (gl->shader)
{
unsigned textures = gl->shader->get_prev_textures() + 1;
if (textures > gl->textures) // Have to reinit a bit.
{
#if defined(HAVE_FBO) && !defined(HAVE_GCMGL)
gl_deinit_hw_render(gl);
#endif
glDeleteTextures(gl->textures, gl->texture);
#if defined(HAVE_PSGL)
glBindBuffer(GL_TEXTURE_REFERENCE_BUFFER_SCE, 0);
glDeleteBuffers(1, &gl->pbo);
#endif
gl->textures = textures;
RARCH_LOG("GL: Using %u textures.\n", gl->textures);
gl->tex_index = 0;
gl_init_textures(gl, &gl->video_info);
gl_init_textures_data(gl);
#if defined(HAVE_FBO) && !defined(HAVE_GCMGL)
if (gl->hw_render_use)
gl_init_hw_render(gl, gl->tex_w, gl->tex_h);
#endif
}
}
#ifdef HAVE_FBO
// Set up render to texture again.
gl_init_fbo(gl, gl->tex_w, gl->tex_h);
#endif
// Apparently need to set viewport for passes when we aren't using FBOs.
gl_set_shader_viewport(gl, 0);
gl_set_shader_viewport(gl, 1);
context_bind_hw_render(gl, true);
return true;
}
#endif
static void gl_viewport_info(void *data, struct rarch_viewport *vp)
{
unsigned top_y, top_dist;
gl_t *gl = (gl_t*)data;
*vp = gl->vp;
vp->full_width = gl->win_width;
vp->full_height = gl->win_height;
// Adjust as GL viewport is bottom-up.
top_y = vp->y + vp->height;
top_dist = gl->win_height - top_y;
vp->y = top_dist;
}
#ifndef NO_GL_READ_PIXELS
static bool gl_read_viewport(void *data, uint8_t *buffer)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return false;
context_bind_hw_render(gl, false);
RARCH_PERFORMANCE_INIT(read_viewport);
RARCH_PERFORMANCE_START(read_viewport);
#ifdef HAVE_GL_ASYNC_READBACK
if (gl->pbo_readback_enable)
{
// Don't readback if we're in RGUI.
if (!gl->pbo_readback_valid[gl->pbo_readback_index]) // We haven't buffered up enough frames yet, come back later.
{
context_bind_hw_render(gl, true);
return false;
}
gl->pbo_readback_valid[gl->pbo_readback_index] = false;
glBindBuffer(GL_PIXEL_PACK_BUFFER, gl->pbo_readback[gl->pbo_readback_index]);
#ifdef HAVE_OPENGLES3
// Slower path, but should work on all implementations at least.
unsigned num_pixels = gl->vp.width * gl->vp.height;
const uint8_t *ptr = (const uint8_t*)glMapBufferRange(GL_PIXEL_PACK_BUFFER,
0, num_pixels * sizeof(uint32_t), GL_MAP_READ_BIT);
if (ptr)
{
unsigned x, y;
for (y = 0; y < gl->vp.height; y++)
{
for (x = 0; x < gl->vp.width; x++, buffer += 3, ptr += 4)
{
buffer[0] = ptr[2]; // RGBA -> BGR.
buffer[1] = ptr[1];
buffer[2] = ptr[0];
}
}
}
else
{
RARCH_ERR("[GL]: Failed to map pixel unpack buffer.\n");
context_bind_hw_render(gl, true);
return false;
}
#else
const void *ptr = glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
if (!ptr)
{
RARCH_ERR("[GL]: Failed to map pixel unpack buffer.\n");
context_bind_hw_render(gl, true);
return false;
}
scaler_ctx_scale(&gl->pbo_readback_scaler, buffer, ptr);
#endif
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
}
else // Use slow synchronous readbacks. Use this with plain screenshots as we don't really care about performance in this case.
#endif
{
// GLES2 only guarantees GL_RGBA/GL_UNSIGNED_BYTE readbacks so do just that ...
// GLES2 also doesn't support reading back data from front buffer, so render
// a cached frame and have gl_frame() do the readback while it's in the back buffer.
// Keep codepath similar for GLES and desktop GL.
unsigned num_pixels = gl->vp.width * gl->vp.height;
gl->readback_buffer_screenshot = malloc(num_pixels * sizeof(uint32_t));
if (!gl->readback_buffer_screenshot)
{
RARCH_PERFORMANCE_STOP(read_viewport);
context_bind_hw_render(gl, true);
return false;
}
rarch_render_cached_frame();
uint8_t *dst = buffer;
const uint8_t *src = (const uint8_t*)gl->readback_buffer_screenshot;
unsigned i;
for (i = 0; i < num_pixels; i++, dst += 3, src += 4)
{
dst[0] = src[2]; // RGBA -> BGR.
dst[1] = src[1];
dst[2] = src[0];
}
free(gl->readback_buffer_screenshot);
gl->readback_buffer_screenshot = NULL;
}
RARCH_PERFORMANCE_STOP(read_viewport);
context_bind_hw_render(gl, true);
return true;
}
#endif
#ifdef HAVE_OVERLAY
static void gl_free_overlay(gl_t *gl);
static bool gl_overlay_load(void *data, const struct texture_image *images, unsigned num_images)
{
unsigned i;
gl_t *gl = (gl_t*)data;
if (!gl)
return false;
context_bind_hw_render(gl, false);
gl_free_overlay(gl);
gl->overlay = (struct gl_overlay_data*)calloc(num_images, sizeof(*gl->overlay));
if (!gl->overlay)
{
context_bind_hw_render(gl, true);
return false;
}
gl->overlays = num_images;
for (i = 0; i < num_images; i++)
{
struct gl_overlay_data *data = &gl->overlay[i];
glGenTextures(1, &data->tex);
glBindTexture(GL_TEXTURE_2D, data->tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glPixelStorei(GL_UNPACK_ALIGNMENT, get_alignment(images[i].width * sizeof(uint32_t)));
glTexImage2D(GL_TEXTURE_2D, 0, driver.gfx_use_rgba ? GL_RGBA : RARCH_GL_INTERNAL_FORMAT32,
images[i].width, images[i].height, 0, driver.gfx_use_rgba ? GL_RGBA : RARCH_GL_TEXTURE_TYPE32,
RARCH_GL_FORMAT32, images[i].pixels);
gl_overlay_tex_geom(gl, i, 0, 0, 1, 1); // Default. Stretch to whole screen.
gl_overlay_vertex_geom(gl, i, 0, 0, 1, 1);
gl->overlay[i].alpha_mod = 1.0f;
}
context_bind_hw_render(gl, true);
return true;
}
static void gl_overlay_tex_geom(void *data,
unsigned image,
GLfloat x, GLfloat y,
GLfloat w, GLfloat h)
{
struct gl_overlay_data *o;
gl_t *gl = (gl_t*)data;
if (!gl)
return;
o = (struct gl_overlay_data*)&gl->overlay[image];
o->tex_coord[0] = x; o->tex_coord[1] = y;
o->tex_coord[2] = x + w; o->tex_coord[3] = y;
o->tex_coord[4] = x; o->tex_coord[5] = y + h;
o->tex_coord[6] = x + w; o->tex_coord[7] = y + h;
}
static void gl_overlay_vertex_geom(void *data,
unsigned image,
float x, float y,
float w, float h)
{
struct gl_overlay_data *o;
gl_t *gl = (gl_t*)data;
if (!gl)
return;
o = (struct gl_overlay_data*)&gl->overlay[image];
// Flipped, so we preserve top-down semantics.
y = 1.0f - y;
h = -h;
o->vertex_coord[0] = x; o->vertex_coord[1] = y;
o->vertex_coord[2] = x + w; o->vertex_coord[3] = y;
o->vertex_coord[4] = x; o->vertex_coord[5] = y + h;
o->vertex_coord[6] = x + w; o->vertex_coord[7] = y + h;
}
static void gl_overlay_enable(void *data, bool state)
{
gl_t *gl = (gl_t*)data;
if (gl)
{
gl->overlay_enable = state;
if (gl->ctx_driver->show_mouse && gl->fullscreen)
gl->ctx_driver->show_mouse(gl, state);
}
}
static void gl_overlay_full_screen(void *data, bool enable)
{
gl_t *gl = (gl_t*)data;
if (gl)
gl->overlay_full_screen = enable;
}
static void gl_overlay_set_alpha(void *data, unsigned image, float mod)
{
gl_t *gl = (gl_t*)data;
if (gl)
gl->overlay[image].alpha_mod = mod;
}
static void gl_render_overlay(void *data)
{
unsigned i, j;
gl_t *gl = (gl_t*)data;
GLfloat white_color_mod[16] = {
1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f,
};
if (!gl)
return;
glEnable(GL_BLEND);
if (gl->overlay_full_screen)
glViewport(0, 0, gl->win_width, gl->win_height);
for (i = 0; i < gl->overlays; i++)
{
// Ensure that we reset the attrib array.
if (gl->shader)
gl->shader->use(gl, GL_SHADER_STOCK_BLEND);
glBindTexture(GL_TEXTURE_2D, gl->overlay[i].tex);
for (j = 0; j < 4; j++)
white_color_mod[3 + j * 4] = gl->overlay[i].alpha_mod;
gl->coords.vertex = gl->overlay[i].vertex_coord;
gl->coords.tex_coord = gl->overlay[i].tex_coord;
gl->coords.color = white_color_mod;
gl_shader_set_coords(gl, &gl->coords, &gl->mvp_no_rot);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
glDisable(GL_BLEND);
gl->coords.vertex = gl->vertex_ptr;
gl->coords.tex_coord = gl->tex_coords;
gl->coords.color = gl->white_color_ptr;
if (gl->overlay_full_screen)
glViewport(gl->vp.x, gl->vp.y, gl->vp.width, gl->vp.height);
}
static const video_overlay_interface_t gl_overlay_interface = {
gl_overlay_enable,
gl_overlay_load,
gl_overlay_tex_geom,
gl_overlay_vertex_geom,
gl_overlay_full_screen,
gl_overlay_set_alpha,
};
static void gl_get_overlay_interface(void *data, const video_overlay_interface_t **iface)
{
(void)data;
*iface = &gl_overlay_interface;
}
#endif
#ifdef HAVE_FBO
static uintptr_t gl_get_current_framebuffer(void *data)
{
gl_t *gl = (gl_t*)data;
return gl->hw_render_fbo[(gl->tex_index + 1) % gl->textures];
}
static retro_proc_address_t gl_get_proc_address(void *data, const char *sym)
{
gl_t *gl = (gl_t*)data;
return gl->ctx_driver->get_proc_address(sym);
}
#endif
static void gl_set_aspect_ratio(void *data, unsigned aspect_ratio_idx)
{
gl_t *gl = (gl_t*)data;
switch (aspect_ratio_idx)
{
case ASPECT_RATIO_SQUARE:
gfx_set_square_pixel_viewport(g_extern.system.av_info.geometry.base_width, g_extern.system.av_info.geometry.base_height);
break;
case ASPECT_RATIO_CORE:
gfx_set_core_viewport();
break;
case ASPECT_RATIO_CONFIG:
gfx_set_config_viewport();
break;
default:
break;
}
g_extern.system.aspect_ratio = aspectratio_lut[aspect_ratio_idx].value;
if (gl)
{
gl->keep_aspect = true;
gl->should_resize = true;
}
}
#if defined(HAVE_MENU)
static void gl_set_texture_frame(void *data,
const void *frame, bool rgb32, unsigned width, unsigned height,
float alpha)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
context_bind_hw_render(gl, false);
if (!gl->rgui_texture)
{
glGenTextures(1, &gl->rgui_texture);
glBindTexture(GL_TEXTURE_2D, gl->rgui_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
else
glBindTexture(GL_TEXTURE_2D, gl->rgui_texture);
gl->rgui_texture_alpha = alpha;
unsigned base_size = rgb32 ? sizeof(uint32_t) : sizeof(uint16_t);
glPixelStorei(GL_UNPACK_ALIGNMENT, get_alignment(width * base_size));
if (rgb32)
{
glTexImage2D(GL_TEXTURE_2D,
0, driver.gfx_use_rgba ? GL_RGBA : RARCH_GL_INTERNAL_FORMAT32,
width, height,
0, driver.gfx_use_rgba ? GL_RGBA : RARCH_GL_TEXTURE_TYPE32,
RARCH_GL_FORMAT32, frame);
}
else
{
glTexImage2D(GL_TEXTURE_2D,
0, GL_RGBA, width, height, 0, GL_RGBA,
GL_UNSIGNED_SHORT_4_4_4_4, frame);
}
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
context_bind_hw_render(gl, true);
}
static void gl_set_texture_enable(void *data, bool state, bool full_screen)
{
gl_t *gl = (gl_t*)data;
if (gl)
{
gl->rgui_texture_enable = state;
gl->rgui_texture_full_screen = full_screen;
}
}
#endif
static void gl_apply_state_changes(void *data)
{
gl_t *gl = (gl_t*)data;
if (gl)
gl->should_resize = true;
}
static void gl_set_osd_msg(void *data, const char *msg, void *userdata)
{
gl_t *gl = (gl_t*)data;
if (!gl)
return;
context_bind_hw_render(gl, false);
font_params_t *params = (font_params_t*)userdata;
if (gl->font_ctx)
gl->font_ctx->render_msg(gl, msg, params);
context_bind_hw_render(gl, true);
}
static void gl_show_mouse(void *data, bool state)
{
gl_t *gl = (gl_t*)data;
if (gl && gl->ctx_driver->show_mouse)
gl->ctx_driver->show_mouse(gl, state);
}
static struct gfx_shader *gl_get_current_shader(void *data)
{
gl_t *gl = (gl_t*)data;
return (gl && gl->shader) ? gl->shader->get_current_shader() : NULL;
}
static const video_poke_interface_t gl_poke_interface = {
NULL,
#ifdef HAVE_FBO
gl_get_current_framebuffer,
gl_get_proc_address,
#endif
gl_set_aspect_ratio,
gl_apply_state_changes,
#if defined(HAVE_MENU)
gl_set_texture_frame,
gl_set_texture_enable,
#endif
gl_set_osd_msg,
gl_show_mouse,
NULL,
gl_get_current_shader,
};
static void gl_get_poke_interface(void *data, const video_poke_interface_t **iface)
{
(void)data;
*iface = &gl_poke_interface;
}
const video_driver_t video_gl = {
gl_init,
gl_frame,
gl_set_nonblock_state,
gl_alive,
gl_focus,
#if defined(HAVE_GLSL) || defined(HAVE_CG)
gl_set_shader,
#else
NULL,
#endif
gl_free,
"gl",
gl_set_rotation,
gl_viewport_info,
#ifndef NO_GL_READ_PIXELS
gl_read_viewport,
#else
NULL,
#endif
#ifdef HAVE_OVERLAY
gl_get_overlay_interface,
#endif
gl_get_poke_interface,
};
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