Initial Commit

src/render/render_shared.h

@@ -0,0 +1,240 @@
+// Shared header for render subsystem
+#ifndef RENDER_SHARED_H
+#define RENDER_SHARED_H
+
+#include <stdint.h>
+
+#include <glm/glm.hpp>
+
+typedef uint32_t index_t;
+
+enum BufferType
+{
+	BT_VERTEX,
+	BT_INDEX,
+	
+	BT_MAX
+};
+
+enum BufferAccess
+{
+	BA_READ_ONLY,
+	BA_WRITE_ONLY,
+	BA_READ_WRITE,
+
+	BA_MAX
+};
+
+// texture format
+enum PixelFormat
+{
+	PF_UNKNOWN,
+	PF_R8G8B8,
+	PF_R8G8B8A8,
+	PF_R8G8B8F,
+	PF_R8G8B8A8F,
+
+	// Depth formats
+	PF_DEPTH32F
+};
+
+// Blending functions
+enum BlendFactor
+{
+	BF_ZERO,
+	BF_ONE,
+	BF_SRC_COLOR,
+	BF_ONE_MINUS_SRC_COLOR,
+	BF_DST_COLOR,
+	BF_ONE_MINUS_DST_COLOR,
+	BF_SRC_ALPHA,
+	BF_ONE_MINUS_SRC_ALPHA,
+	BF_DST_ALPHA,
+	BF_ONE_MINUS_DST_ALPHA,
+	BF_CONSTANT_COLOR,
+	BF_ONE_MINUS_CONSTANT_COLOR,
+	BF_CONSTANT_ALPHA,
+	BF_ONE_MINUS_CONSTANT_ALPHA
+};
+
+enum BlendEquation
+{
+	BE_FUNC_ADD,
+	BE_FUNC_SUBTRACT,
+	BE_FUNC_REVERSE_SUBTRACT,
+	BE_MIN,
+	BE_MAX
+};
+
+enum DepthFunc
+{
+	DF_NEVER, // Never passes.
+	DF_LESS, // Passes if the incoming depth value is less than the stored depth value.
+	DF_EQUAL, // Passes if the incoming depth value is equal to the stored depth value.
+	DF_LEQUAL, // Passes if the incoming depth value is less than or equal to the stored depth value.
+	DF_GREATER, // Passes if the incoming depth value is greater than the stored depth value.
+	DF_NOTEQUAL, // Passes if the incoming depth value is not equal to the stored depth value.
+	DF_GEQUAL, // Passes if the incoming depth value is greater than or equal to the stored depth value.
+	DF_ALWAYS, // Always passes.
+	DF_MAX
+};
+
+enum TextureWrap
+{
+	TextureWrap_Repeat,
+	TextureWrap_MirroredRepeat,
+	TextureWrap_ClampToEdge,
+	TextureWrap_ClampToBorder
+};
+
+enum TextureFilter
+{
+	TextureFilter_Nearest,
+	TextureFilter_Linear,
+	TextureFilter_NearestMipmapNearest,
+	TextureFilter_LinearMipmapNearest,
+	TextureFilter_NearestMipmapLinear,
+	TextureFilter_LinearMipmapLinear
+};
+
+enum TextureSurfaceType
+{
+	TST_COLOR = 1 << 0,
+	TST_DEPTH = 1 << 1,
+	TST_STENCIL = 1 << 2,
+};
+
+enum PrimitiveType
+{
+	PT_POINTS,
+	PT_LINES,
+	PT_TRIANGLES
+};
+
+// pixel format convertion
+uint32_t GetGLPF(PixelFormat pf);
+uint32_t GetGLInternalPF(PixelFormat pf);
+uint32_t GetGLTypePF(PixelFormat pf);
+
+// Wrapping and Filter convertion
+int getGlWrap(TextureWrap wrap);
+int getGlTexFilter(TextureFilter filter);
+
+uint32_t GetGLDepthFunc(DepthFunc func);
+
+// Blending factor convertion
+uint32_t GetGLBlendFactor(BlendFactor factor);
+
+// Blending equation convertion
+uint32_t GetGLEquation(BlendEquation equation);
+
+struct Viewport
+{
+	int x;
+	int y;
+	int width;
+	int height;
+};
+
+// Base structure for render view (view and projection matrices, viewport settings)
+struct View
+{
+	//glm::mat4 view;
+	//glm::mat4 proj;
+
+	int x, y;
+	int width, height;
+
+	float fov;
+	bool ortho;
+};
+
+// Stretched picture vertex
+struct StretchedVertex
+{
+	glm::vec3 position;
+	glm::vec2 texcoord;
+	glm::vec4 color;
+};
+
+#define MAX_STRETCH_VX 12 * sizeof(StretchedVertex)
+
+const int SHADERUNIFORM_MAX_COUNT = 16;
+const int INPUT_LAYOUT_MAX_COUNT = 8;
+
+enum VertexAttribute_t {
+	VERTEXATTR_VEC2,
+	VERTEXATTR_VEC3,
+	VERTEXATTR_VEC4,
+	VERTEXATTR_UINT,
+
+	VERTEXATTR_MAX
+};
+
+enum ShaderSemantic_t {
+	SHADERSEMANTIC_POSITION,
+	SHADERSEMANTIC_COLOR,
+	SHADERSEMANTIC_TEXCOORD,
+	SHADERSEMANTIC_TEXCOORD0,
+	SHADERSEMANTIC_TEXCOORD1,
+	SHADERSEMANTIC_NORMAL,
+	SHADERSEMANTIC_TANGENT,
+	SHADERSEMANTIC_BITANGENT,
+	SHADERSEMANTIC_BONEIDS,
+	SHADERSEMANTIC_WEIGHTS,
+
+	SHADERSEMANTIC_MAX
+};
+
+enum ShaderUniformType_t {
+	SHADERUNIFORM_FLOAT,
+	SHADERUNIFORM_VEC2,
+	SHADERUNIFORM_VEC3,
+	SHADERUNIFORM_VEC4,
+	SHADERUNIFORM_MAT4,
+
+	SHADERUNIFORM_MAX
+};
+
+enum ShaderUniform_t
+{
+	UNIFORM_MODEL_MATRIX,
+	UNIFORM_VIEW_MATRIX,
+	UNIFORM_PROJ_MATRIX,
+	UNIFORM_MVP_MATRIX,
+	UNIFORM_CUSTOM_COLOR,
+	UNIFORM_SUN_DIRECTION,
+	UNIFORM_SUN_COLOR,
+	UNIFORM_SUN_AMBIENT,
+
+	UNIFORM_MAX,
+};
+
+enum ShaderSamplers_t
+{
+	SAMPLER_ALBEDO,
+	SAMPLER_NORMAL,
+	SAMPLER_LIGHTMAP,
+
+	SAMPLER_MAX
+};
+
+struct InputLayoutDesc_t {
+	VertexAttribute_t attribute;
+	ShaderSemantic_t semantic;
+};
+
+struct ShaderUniformDesc_t {
+	ShaderUniformType_t type;
+	const char* name;
+	size_t size;
+};
+
+struct StaticMeshVertex
+{
+	glm::vec3 position;
+	glm::vec3 normal;
+	glm::vec2 texcoord;
+};
+
+#endif