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https://github.com/libretro/RetroArch
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gl1: add overlay support
This commit is contained in:
Brad Parker
parent
48dc251303
commit
9579804c72
@ -75,6 +75,14 @@ typedef struct gl1
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bool smooth;
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bool menu_smooth;
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void *readback_buffer_screenshot;
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bool overlay_enable;
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bool overlay_full_screen;
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GLuint *overlay_tex;
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unsigned overlays;
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float *overlay_vertex_coord;
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float *overlay_tex_coord;
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float *overlay_color_coord;
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bool fullscreen;
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} gl1_t;
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static INLINE void gl1_bind_texture(GLuint id, GLint wrap_mode, GLint mag_filter,
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@ -105,6 +105,17 @@ static const GLfloat gl1_white_color[] = {
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if (gl1_shared_context_use) \
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gl1->ctx_driver->bind_hw_render(gl1->ctx_data, enable)
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static void gl1_render_overlay(gl1_t *gl, video_frame_info_t *video_info);
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static void gl1_free_overlay(gl1_t *gl);
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static void gl1_overlay_vertex_geom(void *data,
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unsigned image,
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float x, float y,
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float w, float h);
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static void gl1_overlay_tex_geom(void *data,
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unsigned image,
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GLfloat x, GLfloat y,
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GLfloat w, GLfloat h);
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static bool is_pot(unsigned x)
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{
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return (x & (x - 1)) == 0;
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@ -202,6 +213,8 @@ static void *gl1_gfx_init(const video_info_t *video,
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if (!video_context_driver_set_video_mode(&mode))
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goto error;
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gl1->fullscreen = video->fullscreen;
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mode.width = 0;
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mode.height = 0;
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@ -705,6 +718,11 @@ static bool gl1_gfx_frame(void *data, const void *frame,
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menu_driver_frame(video_info);
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#endif
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#ifdef HAVE_OVERLAY
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if (gl1->overlay_enable)
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gl1_render_overlay(gl1, video_info);
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#endif
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if (msg)
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font_driver_render_msg(video_info, NULL, msg, NULL);
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@ -854,6 +872,10 @@ static void gl1_gfx_free(void *data)
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gl1->menu_tex = 0;
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}
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#ifdef HAVE_OVERLAY
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gl1_free_overlay(gl1);
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#endif
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if (gl1->extensions)
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{
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string_list_free(gl1->extensions);
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@ -1253,6 +1275,230 @@ bool gl1_has_menu_frame(void)
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return (gl1_menu_frame != NULL);
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}
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#ifdef HAVE_OVERLAY
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static bool gl1_overlay_load(void *data,
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const void *image_data, unsigned num_images)
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{
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unsigned i, j;
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gl1_t *gl = (gl1_t*)data;
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const struct texture_image *images =
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(const struct texture_image*)image_data;
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if (!gl)
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return false;
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gl1_context_bind_hw_render(gl, false);
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gl1_free_overlay(gl);
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gl->overlay_tex = (GLuint*)
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calloc(num_images, sizeof(*gl->overlay_tex));
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if (!gl->overlay_tex)
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{
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gl1_context_bind_hw_render(gl, true);
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return false;
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}
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gl->overlay_vertex_coord = (GLfloat*)
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calloc(2 * 4 * num_images, sizeof(GLfloat));
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gl->overlay_tex_coord = (GLfloat*)
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calloc(2 * 4 * num_images, sizeof(GLfloat));
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gl->overlay_color_coord = (GLfloat*)
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calloc(4 * 4 * num_images, sizeof(GLfloat));
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if ( !gl->overlay_vertex_coord
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|| !gl->overlay_tex_coord
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|| !gl->overlay_color_coord)
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return false;
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gl->overlays = num_images;
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glGenTextures(num_images, gl->overlay_tex);
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for (i = 0; i < num_images; i++)
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{
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unsigned alignment = video_pixel_get_alignment(images[i].width
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* sizeof(uint32_t));
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gl1_load_texture_data(gl->overlay_tex[i],
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RARCH_WRAP_EDGE, TEXTURE_FILTER_LINEAR,
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alignment,
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images[i].width, images[i].height, images[i].pixels,
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sizeof(uint32_t));
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/* Default. Stretch to whole screen. */
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gl1_overlay_tex_geom(gl, i, 0, 0, 1, 1);
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gl1_overlay_vertex_geom(gl, i, 0, 0, 1, 1);
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for (j = 0; j < 16; j++)
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gl->overlay_color_coord[16 * i + j] = 1.0f;
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}
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gl1_context_bind_hw_render(gl, true);
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return true;
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}
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static void gl1_overlay_enable(void *data, bool state)
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{
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gl1_t *gl = (gl1_t*)data;
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if (!gl)
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return;
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gl->overlay_enable = state;
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if (gl->fullscreen)
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video_context_driver_show_mouse(&state);
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}
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static void gl1_overlay_full_screen(void *data, bool enable)
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{
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gl1_t *gl = (gl1_t*)data;
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if (gl)
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gl->overlay_full_screen = enable;
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}
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static void gl1_overlay_set_alpha(void *data, unsigned image, float mod)
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{
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GLfloat *color = NULL;
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gl1_t *gl = (gl1_t*)data;
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if (!gl)
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return;
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color = (GLfloat*)&gl->overlay_color_coord[image * 16];
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color[ 0 + 3] = mod;
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color[ 4 + 3] = mod;
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color[ 8 + 3] = mod;
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color[12 + 3] = mod;
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}
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static const video_overlay_interface_t gl1_overlay_interface = {
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gl1_overlay_enable,
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gl1_overlay_load,
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gl1_overlay_tex_geom,
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gl1_overlay_vertex_geom,
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gl1_overlay_full_screen,
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gl1_overlay_set_alpha,
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};
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static void gl1_get_overlay_interface(void *data,
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const video_overlay_interface_t **iface)
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{
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(void)data;
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*iface = &gl1_overlay_interface;
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}
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static void gl1_free_overlay(gl1_t *gl)
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{
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glDeleteTextures(gl->overlays, gl->overlay_tex);
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free(gl->overlay_tex);
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free(gl->overlay_vertex_coord);
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free(gl->overlay_tex_coord);
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free(gl->overlay_color_coord);
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gl->overlay_tex = NULL;
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gl->overlay_vertex_coord = NULL;
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gl->overlay_tex_coord = NULL;
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gl->overlay_color_coord = NULL;
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gl->overlays = 0;
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}
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static void gl1_overlay_vertex_geom(void *data,
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unsigned image,
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float x, float y,
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float w, float h)
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{
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GLfloat *vertex = NULL;
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gl1_t *gl = (gl1_t*)data;
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if (!gl)
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return;
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if (image > gl->overlays)
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{
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RARCH_ERR("[GL]: Invalid overlay id: %u\n", image);
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return;
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}
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vertex = (GLfloat*)&gl->overlay_vertex_coord[image * 8];
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/* Flipped, so we preserve top-down semantics. */
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y = 1.0f - y;
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h = -h;
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vertex[0] = x;
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vertex[1] = y;
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vertex[2] = x + w;
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vertex[3] = y;
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vertex[4] = x;
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vertex[5] = y + h;
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vertex[6] = x + w;
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vertex[7] = y + h;
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}
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static void gl1_overlay_tex_geom(void *data,
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unsigned image,
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GLfloat x, GLfloat y,
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GLfloat w, GLfloat h)
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{
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GLfloat *tex = NULL;
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gl1_t *gl = (gl1_t*)data;
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if (!gl)
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return;
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tex = (GLfloat*)&gl->overlay_tex_coord[image * 8];
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tex[0] = x;
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tex[1] = y;
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tex[2] = x + w;
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tex[3] = y;
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tex[4] = x;
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tex[5] = y + h;
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tex[6] = x + w;
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tex[7] = y + h;
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}
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static void gl1_render_overlay(gl1_t *gl, video_frame_info_t *video_info)
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{
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unsigned i;
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unsigned width = video_info->width;
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unsigned height = video_info->height;
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glEnable(GL_BLEND);
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if (gl->overlay_full_screen)
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glViewport(0, 0, width, height);
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gl->coords.vertex = gl->overlay_vertex_coord;
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gl->coords.tex_coord = gl->overlay_tex_coord;
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gl->coords.color = gl->overlay_color_coord;
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gl->coords.vertices = 4 * gl->overlays;
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/*gl->shader->set_coords(gl->shader_data, &gl->coords);
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gl->shader->set_mvp(gl->shader_data, &gl->mvp_no_rot);*/
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glMatrixMode(GL_PROJECTION);
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glPushMatrix();
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glLoadIdentity();
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for (i = 0; i < gl->overlays; i++)
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{
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glBindTexture(GL_TEXTURE_2D, gl->overlay_tex[i]);
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glDrawArrays(GL_TRIANGLE_STRIP, 4 * i, 4);
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}
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glDisable(GL_BLEND);
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gl->coords.vertex = gl->vertex_ptr;
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gl->coords.tex_coord = gl->tex_info.coord;
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gl->coords.color = gl->white_color_ptr;
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gl->coords.vertices = 4;
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if (gl->overlay_full_screen)
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glViewport(gl->vp.x, gl->vp.y, gl->vp.width, gl->vp.height);
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}
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#endif
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video_driver_t video_gl1 = {
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gl1_gfx_init,
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gl1_gfx_frame,
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@ -1271,7 +1517,7 @@ video_driver_t video_gl1 = {
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NULL, /* read_frame_raw */
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#ifdef HAVE_OVERLAY
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NULL, /* overlay_interface */
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gl1_get_overlay_interface,
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#endif
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gl1_gfx_get_poke_interface,
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gl1_wrap_type_to_enum,
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