OpenGL 3.1 core profile support.

[ipdf/code.git] / src / shaderprogram.h

diff --git a/src/shaderprogram.h b/src/shaderprogram.h
new file mode 100644 (file)
index 0000000..25318d7
--- /dev/null
+++ b/src/shaderprogram.h
@@ -0,0 +1,42 @@
+#ifndef _SHADERPROGRAM_H
+#define _SHADERPROGRAM_H
+
+#include <vector>
+#include "gl_core44.h"
+
+
+namespace IPDF
+{
+       /*
+        * The "Shader" class represents a GLSL program made from shaders. 
+        */
+       class ShaderProgram
+       {
+       public:
+               ShaderProgram() : m_program(0) {}
+               ~ShaderProgram();
+               bool AttachVertexProgram(const char *src);
+               bool AttachFragmentProgram(const char *src);
+               bool Link();
+               const void Use() const;
+               // Unfortunately, we don't require GL 4.3/ARB_explicit_uniform_location
+               // which would make this obsolete. One uday Mesa will support it.
+               // NOTE: We could actually get away with this by only using UBOs, as
+               // Mesa supports ARB_shading_language_420pack, but that'd be a bit more
+               // work right with the way some of our uniforms are laid out at the moment.
+               const GLint GetUniformLocation(const char *uniform_name) const;
+       private:
+               void LazyCreateProgram();
+               bool AttachShader(const char *src, GLenum type);
+               GLuint m_program;
+               struct Shader
+               {
+                       GLenum type;
+                       GLuint obj;
+               };
+               std::vector<Shader> m_shaders;
+       };
+
+}
+
+#endif // _SHADERPROGRAM_H