Move all OpenGL-specific code to a separate directory

[libs/gl.git] / source / backends / opengl / program_backend.h

diff --git a/source/backends/opengl/program_backend.h b/source/backends/opengl/program_backend.h
new file mode 100644 (file)
index 0000000..4ae729e
--- /dev/null
+++ b/source/backends/opengl/program_backend.h
@@ -0,0 +1,73 @@
+#ifndef MSP_GL_PROGRAM_BACKEND_H_
+#define MSP_GL_PROGRAM_BACKEND_H_
+
+#include <map>
+#include <string>
+#include <vector>
+#include "reflectdata.h"
+
+namespace Msp {
+namespace GL {
+
+class OpenGLProgram
+{
+       friend class OpenGLPipelineState;
+
+protected:
+       enum Stage
+       {
+               VERTEX,
+               GEOMETRY,
+               FRAGMENT,
+               MAX_STAGES
+       };
+
+       struct TransientData
+       {
+               std::map<std::string, unsigned> textures;
+               std::map<std::string, unsigned> blocks;
+               std::map<unsigned, int> spec_values;
+       };
+
+       struct UniformCall
+       {
+               using FuncPtr = void (*)(unsigned, unsigned, const void *);
+
+               unsigned location;
+               unsigned size;
+               FuncPtr func;
+
+               UniformCall(unsigned l, unsigned s, FuncPtr f): location(l), size(s), func(f) { }
+       };
+
+       unsigned id;
+       unsigned stage_ids[MAX_STAGES];
+       bool linked;
+       std::vector<UniformCall> uniform_calls;
+       std::string debug_name;
+
+       OpenGLProgram();
+       ~OpenGLProgram();
+
+       bool has_stages() const;
+       unsigned add_stage(Stage);
+       void add_glsl_stages(const GlslModule &, const std::map<std::string, int> &, TransientData &);
+       void compile_glsl_stage(const GlslModule &, unsigned);
+       void add_spirv_stages(const SpirVModule &, const std::map<std::string, int> &, TransientData &);
+
+       void finalize(const Module &);
+       void query_uniforms();
+       void query_uniform_blocks(const std::vector<ReflectData::UniformInfo *> &);
+       void query_attributes();
+       void apply_bindings(const TransientData &);
+
+       void set_debug_name(const std::string &);
+       void set_stage_debug_name(unsigned, Stage);
+};
+
+using ProgramBackend = OpenGLProgram;
+
+} // namespace GL
+} // namespace Msp
+
+#endif