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Initialize compile status variable and check also program link status

This commit is contained in:
capehill 2022-03-26 12:40:08 +02:00 committed by Ryan C. Gordon
parent 7a1c45bd1c
commit d6122704e8
1 changed files with 29 additions and 4 deletions
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33
test/testshader.c
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@ -126,7 +126,7 @@ static PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
static SDL_bool CompileShader(GLhandleARB shader, const char *source) static SDL_bool CompileShader(GLhandleARB shader, const char *source)
{ {
GLint status; GLint status = 0;
glShaderSourceARB(shader, 1, &source, NULL); glShaderSourceARB(shader, 1, &source, NULL);
glCompileShaderARB(shader); glCompileShaderARB(shader);
@ -147,6 +147,31 @@ static SDL_bool CompileShader(GLhandleARB shader, const char *source)
} }
} }
static SDL_bool LinkProgram(ShaderData *data)
{
GLint status = 0;
glAttachObjectARB(data->program, data->vert_shader);
glAttachObjectARB(data->program, data->frag_shader);
glLinkProgramARB(data->program);
glGetObjectParameterivARB(data->program, GL_OBJECT_LINK_STATUS_ARB, &status);
if (status == 0) {
GLint length;
char *info;
glGetObjectParameterivARB(data->program, GL_OBJECT_INFO_LOG_LENGTH_ARB, &length);
info = SDL_stack_alloc(char, length+1);
glGetInfoLogARB(data->program, length, NULL, info);
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to link program:\n%s", info);
SDL_stack_free(info);
return SDL_FALSE;
} else {
return SDL_TRUE;
}
}
static SDL_bool CompileShaderProgram(ShaderData *data) static SDL_bool CompileShaderProgram(ShaderData *data)
{ {
const int num_tmus_bound = 4; const int num_tmus_bound = 4;
@ -171,9 +196,9 @@ static SDL_bool CompileShaderProgram(ShaderData *data)
} }
/* ... and in the darkness bind them */ /* ... and in the darkness bind them */
glAttachObjectARB(data->program, data->vert_shader); if (!LinkProgram(data)) {
glAttachObjectARB(data->program, data->frag_shader); return SDL_FALSE;
glLinkProgramARB(data->program); }
/* Set up some uniform variables */ /* Set up some uniform variables */
glUseProgramObjectARB(data->program); glUseProgramObjectARB(data->program);