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Add error message for failed GLSL compiles. Works on Win32. :)

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This commit is contained in:
Themaister 2011-01-07 21:41:11 +01:00
parent b50d1fa178
commit 9df15e8b7d
1 changed files with 24 additions and 1 deletions

25
gfx/shader_glsl.c

@ -45,6 +45,8 @@ static PFNGLGETUNIFORMLOCATIONPROC pglGetUniformLocation = NULL;
static PFNGLUNIFORM1IPROC pglUniform1i = NULL;
static PFNGLUNIFORM2FVPROC pglUniform2fv = NULL;
static PFNGLUNIFORM4FVPROC pglUniform4fv = NULL;
static PFNGLGETSHADERIVPROC pglGetShaderiv = NULL;
static PFNGLGETSHADERINFOLOGPROC pglGetShaderInfoLog = NULL;
static bool glsl_enable = false;
static GLuint gl_program;
@ -136,6 +138,20 @@ error:
return false;
}
static void print_shader_log(GLuint obj)
{
int info_len = 0;
int max_len;
pglGetShaderiv(obj, GL_INFO_LOG_LENGTH, &max_len);
char info_log[max_len];
pglGetShaderInfoLog(obj, max_len, &info_len, info_log);
if (info_len > 0)
SSNES_LOG("Shader log: %s\n", info_log);
}
bool gl_glsl_init(const char *path)
{
// Load shader functions.
@ -152,12 +168,15 @@ bool gl_glsl_init(const char *path)
pglUniform1i = SDL_GL_GetProcAddress("glUniform1i");
pglUniform2fv = SDL_GL_GetProcAddress("glUniform2fv");
pglUniform4fv = SDL_GL_GetProcAddress("glUniform4fv");
pglGetShaderiv = SDL_GL_GetProcAddress("glGetShaderiv");
pglGetShaderInfoLog = SDL_GL_GetProcAddress("glGetShaderInfoLog");
SSNES_LOG("Checking GLSL shader support ...\n");
bool shader_support = pglCreateProgram && pglUseProgram && pglCreateShader
&& pglDeleteShader && pglShaderSource && pglCompileShader && pglAttachShader
&& pglDetachShader && pglLinkProgram && pglGetUniformLocation
&& pglUniform1i && pglUniform2fv && pglUniform4fv;
&& pglUniform1i && pglUniform2fv && pglUniform4fv
&& pglGetShaderiv && pglGetShaderInfoLog;
if (!shader_support)
{
@ -177,6 +196,8 @@ bool gl_glsl_init(const char *path)
vertex_shader = pglCreateShader(GL_VERTEX_SHADER);
pglShaderSource(vertex_shader, 1, (const char**)&vertex_prog, 0);
pglCompileShader(vertex_shader);
print_shader_log(vertex_shader);
pglAttachShader(gl_program, vertex_shader);
free(vertex_prog);
}
@ -185,6 +206,8 @@ bool gl_glsl_init(const char *path)
fragment_shader = pglCreateShader(GL_FRAGMENT_SHADER);
pglShaderSource(fragment_shader, 1, (const char**)&fragment_prog, 0);
pglCompileShader(fragment_shader);
print_shader_log(fragment_shader);
pglAttachShader(gl_program, fragment_shader);
free(fragment_prog);
}