static SCP_string opengl_shader_get_header(shader_type type_id, int flags, shader_stage stage) {
SCP_stringstream sflags;
sflags << "#version " << GLSL_version << " core\n";
if (GL_workaround_clipping_planes) {
sflags << "#define WORKAROUND_CLIPPING_PLANES\n";
}
if (type_id == SDR_TYPE_POST_PROCESS_MAIN || type_id == SDR_TYPE_POST_PROCESS_LIGHTSHAFTS || type_id == SDR_TYPE_POST_PROCESS_FXAA) {
// ignore looking for variants. main post process, lightshafts, and FXAA shaders need special headers to be hacked in
opengl_post_shader_header(sflags, type_id, flags);
}
else {
for (int i = 0; i < GL_num_shader_variants; ++i) {
opengl_shader_variant_t &variant = GL_shader_variants[i];
if (type_id == variant.type_id && flags & variant.flag) {
sflags << "#define " << variant.flag_text << "\n";
}
}
}
return sflags.str();
}
static SCP_string opengl_shader_get_header(shader_type type_id, int flags, bool has_geo_shader) {
SCP_stringstream sflags;
sflags << "#version " << GLSL_version << " core\n";
if (Detail.lighting < 3) {
sflags << "#define FLAG_LIGHT_MODEL_BLINN_PHONG\n";
}
if (has_geo_shader) {
// If there is a geometry shader then we define a special preprocessor symbol to make writing shaders easier
sflags << "#define HAS_GEOMETRY_SHADER\n";
}
if (type_id == SDR_TYPE_POST_PROCESS_MAIN || type_id == SDR_TYPE_POST_PROCESS_LIGHTSHAFTS || type_id == SDR_TYPE_POST_PROCESS_FXAA) {
// ignore looking for variants. main post process, lightshafts, and FXAA shaders need special headers to be hacked in
opengl_post_shader_header(sflags, type_id, flags);
}
else {
for (int i = 0; i < GL_num_shader_variants; ++i) {
opengl_shader_variant_t &variant = GL_shader_variants[i];
if (type_id == variant.type_id && flags & variant.flag) {
sflags << "#define " << variant.flag_text << "\n";
}
}
}
return sflags.str();
}
static SCP_string get_shader_header(shader_type type_id, int flags) {
SCP_stringstream sflags;
#ifdef __APPLE__
sflags << "#version 120\n";
sflags << "#define APPLE\n";
#endif
if (type_id == SDR_TYPE_POST_PROCESS_MAIN || type_id == SDR_TYPE_POST_PROCESS_LIGHTSHAFTS || type_id == SDR_TYPE_POST_PROCESS_FXAA) {
// ignore looking for variants. main post process, lightshafts, and FXAA shaders need special headers to be hacked in
opengl_post_shader_header(sflags, type_id, flags);
}
else {
for (int i = 0; i < GL_num_shader_variants; ++i) {
opengl_shader_variant_t &variant = GL_shader_variants[i];
if (type_id == variant.type_id && flags & variant.flag) {
sflags << "#define " << variant.flag_text << "\n";
}
}
}
return sflags.str();
}
