static const char *gpu_shader_standard_extensions(void)
{
/* need this extensions for high quality bump mapping */
if (GPU_bicubic_bump_support())
return "#extension GL_ARB_texture_query_lod: enable\n";
return "";
}
static void gpu_shader_standard_defines(char defines[MAX_DEFINE_LENGTH],
bool use_opensubdiv,
bool use_instancing,
bool use_new_shading)
{
/* some useful defines to detect GPU type */
if (GPU_type_matches(GPU_DEVICE_ATI, GPU_OS_ANY, GPU_DRIVER_ANY)) {
strcat(defines, "#define GPU_ATI\n");
if (GLEW_VERSION_3_0) {
/* TODO(merwin): revisit this version check; GLEW_VERSION_3_0 means GL 3.0 or newer */
strcat(defines, "#define CLIP_WORKAROUND\n");
}
}
else if (GPU_type_matches(GPU_DEVICE_NVIDIA, GPU_OS_ANY, GPU_DRIVER_ANY))
strcat(defines, "#define GPU_NVIDIA\n");
else if (GPU_type_matches(GPU_DEVICE_INTEL, GPU_OS_ANY, GPU_DRIVER_ANY))
strcat(defines, "#define GPU_INTEL\n");
if (GPU_bicubic_bump_support())
strcat(defines, "#define BUMP_BICUBIC\n");
if (GLEW_VERSION_3_0) {
strcat(defines, "#define BIT_OPERATIONS\n");
}
#ifdef WITH_OPENSUBDIV
/* TODO(sergey): Check whether we actually compiling shader for
* the OpenSubdiv mesh.
*/
if (use_opensubdiv) {
strcat(defines, "#define USE_OPENSUBDIV\n");
/* TODO(sergey): not strictly speaking a define, but this is
* a global typedef which we don't have better place to define
* in yet.
*/
strcat(defines, "struct VertexData {\n"
" vec4 position;\n"
" vec3 normal;\n"
" vec2 uv;"
"};\n");
}
#else
UNUSED_VARS(use_opensubdiv);
#endif
if (use_instancing) {
strcat(defines, "#define USE_INSTANCING\n");
}
if (use_new_shading) {
strcat(defines, "#define USE_NEW_SHADING\n");
}
return;
}
static const char *gpu_shader_version(void)
{
/* turn on glsl 1.30 for bicubic bump mapping and ATI clipping support */
if (GLEW_VERSION_3_0 &&
(GPU_bicubic_bump_support() || GPU_type_matches(GPU_DEVICE_ATI, GPU_OS_ANY, GPU_DRIVER_ANY)))
{
return "#version 130\n";
}
return "";
}
static void gpu_shader_standard_defines(char defines[MAX_DEFINE_LENGTH])
{
/* some useful defines to detect GPU type */
if (GPU_type_matches(GPU_DEVICE_ATI, GPU_OS_ANY, GPU_DRIVER_ANY)) {
strcat(defines, "#define GPU_ATI\n");
if (GLEW_VERSION_3_0)
strcat(defines, "#define CLIP_WORKAROUND");
}
else if (GPU_type_matches(GPU_DEVICE_NVIDIA, GPU_OS_ANY, GPU_DRIVER_ANY))
strcat(defines, "#define GPU_NVIDIA\n");
else if (GPU_type_matches(GPU_DEVICE_INTEL, GPU_OS_ANY, GPU_DRIVER_ANY))
strcat(defines, "#define GPU_INTEL\n");
if (GPU_bicubic_bump_support())
strcat(defines, "#define BUMP_BICUBIC\n");
return;
}
void GPU_code_generate_glsl_lib(void)
{
DynStr *ds;
/* only initialize the library once */
if (glsl_material_library)
return;
ds = BLI_dynstr_new();
if (GPU_bicubic_bump_support()) {
BLI_dynstr_append(ds, "/* These are needed for high quality bump mapping */\n"
"#version 130\n"
"#extension GL_ARB_texture_query_lod: enable\n"
"#define BUMP_BICUBIC\n");
}
BLI_dynstr_append(ds, datatoc_gpu_shader_material_glsl);
glsl_material_library = BLI_dynstr_get_cstring(ds);
BLI_dynstr_free(ds);
}
