fixed shader manager, added it

[demo] / src / shader.h

diff --git a/src/shader.h b/src/shader.h
index 1472fb3..53f8654 100644 (file)
--- a/src/shader.h
+++ b/src/shader.h
@@ -1,6 +1,15 @@
 #ifndef SHADER_H_
 #define SHADER_H_
 
+#include <vector>
+#include <string>
+
+#include <gmath/gmath.h>
+
+/*
+       Shader class
+*/
+
 enum SType {
        SDR_UNKNOWN,
        SDR_VERTEX,
@@ -9,30 +18,64 @@ enum SType {
 
 class Shader {
 protected:
+       SType type;
+       std::string name;
+
        virtual bool create(char *buf, unsigned int bsz, const char *fname) = 0;
 
 public:
-       SType type;
 
        Shader();
        virtual ~Shader() = 0;
 
-       virtual void destroy() = 0;
        virtual bool load(const char *fname, SType type);
-       virtual void attach(unsigned int prog) = 0; // if vulkan -> leave empty
+       virtual void destroy() = 0;
+};
+
+/* Shader Program */
+
+struct Uniform {
+       int location;
+       std::string name;
+       int state_idx;
 };
 
 class ShaderProgram {
 protected:
        Shader *shaders[2];
+       std::vector<Uniform> uniforms;
 
 public:
        ShaderProgram();
        virtual ~ShaderProgram();
 
-       virtual void add_shader(Shader *sdr);
+       virtual void cache_uniforms() = 0;
+
+       virtual bool create() = 0;
        virtual bool link() = 0;
-       virtual bool load(const char *vfname, const char *ffname) = 0;
+       virtual bool use() = 0;
+       virtual void destroy() = 0;
+       virtual void attach_shader(Shader *shader) = 0;
+
+       /*
+               THIS PART MIGHT NEED SEVERAL CHANGES: on vulkan we set the uniforms
+               using descriptor sets. The current design is suitable for OpenGL and
+               it *might* have to be rewritten to work with both APIs later
+       */
+
+       virtual void set_uniformi(int location, int value) = 0;
+       virtual void set_uniformi(int location, int x, int y) = 0;
+       virtual void set_uniformi(int location, int x, int y, int z) = 0;
+       virtual void set_uniformi(int location, int x, int y, int z, int w) = 0;
+
+       virtual void set_uniformf(int location, float value) = 0;
+       virtual void set_uniformf(int location, float x, float y) = 0;
+       virtual void set_uniformf(int location, float x, float y, float z) = 0;
+       virtual void set_uniformf(int location, float x, float y, float z, float w) = 0;
+
+       virtual void set_uniform_matrix(int location, const Mat4 &mat) = 0;
 };
 
+ShaderProgram *get_current_program();
+
 #endif // SHADER_H_