implementing shader variants

1 files changed, 8 insertions, 0 deletions

diff --git a/video.hpp b/video.hpp
index 530b126..f1bedb1 100644
--- a/video.hpp
+++ b/video.hpp
@@ -134,12 +134,18 @@ struct Pipeline {
 	Vertex_Format_Id vertex_format;
 	Shader_Id shader;
 	int samples;
+	int shader_masks[shader_type_count];
 	Descriptor descriptors[pipeline_max_descriptors];
 	int descriptor_count;
 
 	void hash();
 
 	bool pipeline_eq(const Pipeline& other) const {
+		int i;
+		for (i = 0; i < shader_type_count; i++) {
+			if (other.shader_masks[i] != shader_masks[i])
+				return false;
+		}
 		return
 			shader == other.shader &&
 			vertex_format == other.vertex_format &&
@@ -333,6 +339,7 @@ struct Pipeline_Builder {
 	);
 	PB& cull(Cull_Mode mode);
 	PB& shader(Shader_Id s);
+	PB& option(Shader_Type type, int mask);
 	PB& vertex_format(Vertex_Format_Id vf);
 	PB& texture(int binding, Texture_Id t, Sampler_Id s);
 	PB& cbuffer(
@@ -588,6 +595,7 @@ struct Shader : public Asset {
 	int attribute_index(const char* name);
 	int target_index(const char* name);
 	int descriptor_binding(const char* name);
+	int opt_mask(Shader_Type type, const char* name);
 	int descriptor_stage(int slot);
 };