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#ifndef _ASURA_ENGINE_SHADER_H_
#define _ASURA_ENGINE_SHADER_H_
#include <map>
#include <string>
#include <vector>
#include <asura-base/Exception.h>
#include <asura-base/Scripting/Scripting.h>
#include <asura-base/FileSystem/Renewable.h>
#include <asura-base/Math/Vector2.hpp>
#include <asura-base/Math/vector3.hpp>
#include <asura-base/Math/vector4.h>
#include <asura-base/Math/matrix44.h>
#include <asura-base/Utilities/Stringmap.hpp>
#include <asura-base/Manager.hpp>
#include "GfxDevice.h"
#include "Color.h"
#include "Texture.h"
#include "VertexBuffer.h"
#include "IndexBuffer.h"
namespace_begin(AsuraEngine)
namespace_begin(Graphics)
enum ShaderChannel
{
SHADER_CHANNEL_NONE = -1,
SHADER_CHANNEL_VERTEX = 0, // Vertex (vector3)
SHADER_CHANNEL_NORMAL, // Normal (vector3)
SHADER_CHANNEL_COLOR, // Vertex color
SHADER_CHANNEL_TEXCOORD0, // UV set 0 (vector2)
SHADER_CHANNEL_TEXCOORD1, // UV set 1 (vector2)
SHADER_CHANNEL_TANGENT, // Tangent (vector4)
SHADER_CHANNEL_COUNT, // Keep this last!
};
///
/// һshaderһڲʼ乲ijShaderuniformsͶݣֻṩ uniformsuseɫķ
/// ༭ÿshaderͨshaderҵuniforms¶frameworkmaterialá
///
class Shader ASURA_FINAL
: public Scripting::Portable<Shader>
, public AEFileSystem::Renewable
{
public:
Shader();
~Shader();
static void SetActive(Shader* shader);
static Shader* GetActive();
bool Load(const std::string& vert, const std::string& frag) ASURA_THROW(Exception);
// ʹSetActiveлshaderʱ
void OnEnable();
void OnDisable();
// Draw call֮
void OnUsed();
void SetAttribute(int loc, VertexBuffer* vbo, uint offseti = 0, uint stridei = 0, bool normalized = false);
int GetAttributeLocation(const std::string& attribute);
void DisableAttribute(int loc);
bool HasUniform(const std::string& uniform);
uint GetUniformLocation(const std::string& uniform);
void SetUniformFloat(uint loc, float value);
void SetUniformVector2(uint loc, const Math::Vector2f& vec2);
void SetUniformVector3(uint loc, const Math::Vector3f& vec3);
void SetUniformVector4(uint loc, const Math::Vector4f& vec4);
void SetUniformColor(uint loc, const Color& color);
void SetUniformMatrix44(uint loc, const Math::Matrix44& mat44);
bool SetUniformTexture(uint loc, const Texture& texture);
float GetUniformFloat(uint loc);
Vector2f GetUniformVector2(uint loc);
Vector3f GetUniformVector3(uint loc);
Vector4f GetUniformVector4s(uint loc);
Matrix44 GetUniformMatrix44(uint loc);
GLuint GetGLProgram();
static uint GetGLTextureUnitCount();
private:
bool CompileVertexShader(const std::string& vert, std::string& outError);
bool CompileFragementShader(const std::string& frag, std::string& outError);
std::string GetProgramWarnings();
std::string GetShaderWarnings(GLuint shader);
GLuint m_Program;
GLuint m_VertShader;
GLuint m_FragShader;
luaxport:
LUAX_DECL_FACTORY(Shader);
LUAX_DECL_METHOD(_New);
LUAX_DECL_METHOD(_Load);
LUAX_DECL_METHOD(_Update);
LUAX_DECL_METHOD(_HasUniform);
LUAX_DECL_METHOD(_GetUniformLocation);
LUAX_DECL_METHOD(_SetUniformFloat);
LUAX_DECL_METHOD(_SetUniformTexture);
LUAX_DECL_METHOD(_SetUniformVector2);
LUAX_DECL_METHOD(_SetUniformVector3);
LUAX_DECL_METHOD(_SetUniformVector4);
LUAX_DECL_METHOD(_SetUniformColor);
LUAX_DECL_METHOD(_GetAttributeLocation);
LUAX_DECL_METHOD(_SetAttribute);
LUAX_DECL_METHOD(_DisableAttribute);
LUAX_DECL_METHOD(_SetBuiltInUniforms);
};
// GPU program
typedef Shader GpuProgram;
namespace_end
namespace_end
#endif
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