Shaders

engine/render/shader.h

@@ -0,0 +1,98 @@
+#ifndef SHADER_H
+#define SHADER_H
+
+#include <stdint.h>
+#include "gl_shared.h"
+
+const int SHADERUNIFORM_MAX_COUNT = 16;
+const int INPUT_LAYOUT_MAX_COUNT = 8;
+
+enum VertexAttribute_t {
+	VERTEXATTR_VEC2,
+	VERTEXATTR_VEC3,
+	VERTEXATTR_VEC4,
+
+	VERTEXATTR_MAX
+};
+
+enum ShaderSemantic_t {
+	SHADERSEMANTIC_POSITION,
+	SHADERSEMANTIC_COLOR,
+	SHADERSEMANTIC_TEXCOORD,
+	SHADERSEMANTIC_TEXCOORD0,
+	SHADERSEMANTIC_TEXCOORD1,
+	SHADERSEMANTIC_NORMAL,
+	SHADERSEMANTIC_TANGENT,
+	SHADERSEMANTIC_BITANGENT,
+
+	SHADERSEMANTIC_MAX
+};
+
+enum ShaderUniformType_t {
+	SHADERUNIFORM_FLOAT,
+	SHADERUNIFORM_VEC2,
+	SHADERUNIFORM_VEC3,
+	SHADERUNIFORM_VEC4,
+	SHADERUNIFORM_MAT4,
+
+	SHADERUNIFORM_MAX
+};
+
+struct InputLayoutDesc_t {
+	VertexAttribute_t attribute;
+	ShaderSemantic_t semantic;
+};
+
+struct ShaderUniformDesc_t {
+	ShaderUniformType_t type;
+	const char* name;
+	size_t size;
+};
+
+class Shader
+{
+public:
+	Shader();
+	~Shader();
+
+	void Create(const char* name, const char* vsfilepath, const char* psfilepath);
+	void Destroy();
+
+	void AllocateAttributes();
+
+public:
+	// TEMP SOLUTION
+	ShaderUniformDesc_t m_uniform_desc[SHADERUNIFORM_MAX_COUNT];
+	size_t m_uniform_count;
+
+	InputLayoutDesc_t m_layouts[INPUT_LAYOUT_MAX_COUNT];
+	size_t m_layout_count;
+
+	GLuint m_glLayouts[INPUT_LAYOUT_MAX_COUNT];
+
+	// #TODO: REMOVE PLEASE
+	int m_stride;
+
+	const char* m_name;
+
+	GLuint m_program;
+};
+
+inline int GetVertexAttributeSize( VertexAttribute_t attrib )
+{
+	switch ( attrib )
+	{
+	case VERTEXATTR_VEC2:
+		return 2;
+	case VERTEXATTR_VEC3:
+		return 3;
+	case VERTEXATTR_VEC4:
+		return 4;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+#endif // !SHADER_H