/**
* Called via ctx->Driver.CompileShader()
*/
void
_mesa_compile_shader(GLcontext *ctx, GLuint shaderObj)
{
struct gl_shader *sh = _mesa_lookup_shader(ctx, shaderObj);
if (!sh) {
_mesa_error(ctx, GL_INVALID_VALUE, "glCompileShader(shaderObj)");
return;
}
sh->CompileStatus = _slang_compile(ctx, sh);
}
/**
* Search the shader program's list of shaders to find the one that
* defines main().
* This will involve shader concatenation and recompilation if needed.
*/
static struct gl_shader *
get_main_shader(GLcontext *ctx,
struct gl_shader_program *shProg, GLenum type)
{
struct gl_shader *shader = NULL;
GLuint i;
/*
* Look for a shader that defines main() and has no unresolved references.
*/
for (i = 0; i < shProg->NumShaders; i++) {
shader = shProg->Shaders[i];
if (shader->Type == type &&
shader->Main &&
!shader->UnresolvedRefs) {
/* All set! */
return shader;
}
}
/*
* There must have been unresolved references during the original
* compilation. Try concatenating all the shaders of the given type
* and recompile that.
*/
shader = concat_shaders(shProg, type);
if (shader) {
_slang_compile(ctx, shader);
/* Finally, check if recompiling failed */
if (!shader->CompileStatus ||
!shader->Main ||
shader->UnresolvedRefs) {
link_error(shProg, "Unresolved symbols");
_mesa_free_shader(ctx, shader);
return NULL;
}
}
return shader;
}
