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#include <vector>
#include "GfxDevice.h"
#include "Runtime/Math/Math.h"
static bool deviceInited = false;
//
//static const std::vector<byte> s_AvailableTextureUnitPreset = {0,1,2,3,4,5,6,7}; // 最多支持8个贴图
//static std::vector<byte> s_TextureUnitBucket = s_AvailableTextureUnitPreset;
static const int kMaxAvailableTextureUnitCount = 8; // 最多支持8个贴图
static int s_CurAvailableTextureUnit = 0;
static int ClaimTextureUnit()
{
int unit = s_CurAvailableTextureUnit;
s_CurAvailableTextureUnit = (s_CurAvailableTextureUnit + 1) % kMaxAvailableTextureUnitCount;
return unit;
}
GfxDevice g_GfxDevice;
GfxDevice::GfxDevice()
{
Assert(!deviceInited);
deviceInited = true;
}
GfxDevice::~GfxDevice()
{
}
void GfxDevice::Initialize(GfxDeviceSetting setting)
{
}
void GfxDevice::Enable(EDeviceEnable enabled)
{
}
void GfxDevice::Disable(EDeviceEnable enabled)
{
}
void GfxDevice::IsEnable(uint flag)
{
}
void GfxDevice::SetDepthTest(EDepthTest testing)
{
}
void GfxDevice::SetCullFace(ECullFace face)
{
}
void GfxDevice::SetStencilMask(byte stencilMask)
{
}
void GfxDevice::SetStencilOp(EStencilOp op)
{
}
void GfxDevice::SetAntiAliasing(int level /*= 0*/)
{
}
void GfxDevice::Clear(int clearFlag)
{
}
void GfxDevice::UseShader(LuaBind::State& state, Shader* shader, int idx)
{
if (shader == NULL)
return;
GLuint id = shader->GetID();
if (id == 0)
return;
glUseProgram(id);
shader->ExecuteCommand();
m_Shader.shader = shader;
m_Shader.ref.SetRef(state, idx);
}
void GfxDevice::UnuseShader()
{
if (m_Shader)
{
m_Shader.shader = NULL;
m_Shader.ref.UnRef();
}
glUseProgram(0);
}
void GfxDevice::SetUniformVec2(const char* name, Vector2 vec2)
{
if (!m_Shader)
return;
GLint loc = glGetUniformLocation(m_Shader.GetID(), name);
glUniform2f(loc, vec2.x, vec2.y);
}
void GfxDevice::SetUniformVec3(const char* name, Vector3 vec3)
{
if (!m_Shader)
return;
GLint loc = glGetUniformLocation(m_Shader.GetID(), name);
glUniform3f(loc, vec3.x, vec3.y, vec3.z);
}
void GfxDevice::SetUniformVec4(const char* name, Vector4 vec4)
{
if (!m_Shader)
return;
GLint loc = glGetUniformLocation(m_Shader.GetID(), name);
glUniform4f(loc, vec4.x, vec4.y, vec4.z, vec4.w);
}
void GfxDevice::SetUniformMat4(const char* name, Matrix44 mat4)
{
if (!m_Shader)
return;
GLint loc = glGetUniformLocation(m_Shader.GetID(), name);
glUniformMatrix4fv(loc, 1, GL_TRUE, &mat4.m[0][0]);
}
void GfxDevice::SetUniformTexture(const char* name, Texture* texture)
{
int texUnit = ClaimTextureUnit();
glActiveTexture(GL_TEXTURE0 + texUnit);
glBindTexture(GL_TEXTURE_2D, texture->GetGpuID());
GLint loc = glGetUniformLocation(m_Shader.GetID(), name);
glUniform1i(loc, texUnit);
}
void GfxDevice::BeginFrame()
{
m_IsInsideFrame = true;
}
void GfxDevice::EndFrame()
{
//GPU::BufferPool::Instance()->OnEndFrame();
m_IsInsideFrame = false;
}
void GfxDevice::PresentFrame()
{
// swap buffers
}
bool GfxDevice::IsInsideFrame()
{
return m_IsInsideFrame;
}
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