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Partially unroll template for grass shadow.

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This commit is contained in:
vlj 2014-07-16 19:41:28 +02:00
parent ed349914fb
commit 1aa43814b0
1 changed files with 43 additions and 34 deletions
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77
src/graphics/render_geometry.cpp
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@ -318,7 +318,43 @@ void IrrDriver::renderTransparent()
}
template<typename T, enum E_VERTEX_TYPE VertexType, typename... Args>
template<typename T, typename...uniforms>
void drawShadow(const T *Shader, const GLMesh *mesh, uniforms... Args)
{
irr_driver->IncreaseObjectCount();
GLenum ptype = mesh->PrimitiveType;
GLenum itype = mesh->IndexType;
size_t count = mesh->IndexCount;
Shader->setUniforms(Args...);
glDrawElementsInstancedBaseVertex(ptype, count, itype, (GLvoid *)mesh->vaoOffset, 4, mesh->vaoBaseVertex);
}
template<int...List>
struct custom_unroll_args;
template<>
struct custom_unroll_args<>
{
template<typename T, typename ...TupleTypes, typename ...Args>
static void exec(const T *Shader, const std::tuple<TupleTypes...> &t, Args... args)
{
drawShadow<T>(Shader, std::get<0>(t), args...);
}
};
template<int N, int...List>
struct custom_unroll_args<N, List...>
{
template<typename T, typename ...TupleTypes, typename ...Args>
static void exec(const T *Shader, const std::tuple<TupleTypes...> &t, Args... args)
{
custom_unroll_args<List...>::template exec<T>(Shader, t, std::get<N>(t), args...);
}
};
template<typename T, enum E_VERTEX_TYPE VertexType, int...List, typename... Args>
void drawShadow(const T *Shader, const std::vector<GLuint> TextureUnits, const std::vector<std::tuple<GLMesh *, core::matrix4, Args...> >&t)
{
glUseProgram(Shader->Program);
@ -326,40 +362,13 @@ void drawShadow(const T *Shader, const std::vector<GLuint> TextureUnits, const s
for (unsigned i = 0; i < t.size(); i++)
{
const GLMesh *mesh = std::get<0>(t[i]);
irr_driver->IncreaseObjectCount();
GLenum ptype = mesh->PrimitiveType;
GLenum itype = mesh->IndexType;
size_t count = mesh->IndexCount;
for (unsigned j = 0; j < TextureUnits.size(); j++)
{
compressTexture(mesh->textures[j], true);
setTexture(TextureUnits[j], getTextureGLuint(mesh->textures[j]), GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, true);
}
Shader->setUniforms(std::get<1>(t[i]));
glDrawElementsInstancedBaseVertex(ptype, count, itype, (GLvoid *)mesh->vaoOffset, 4, mesh->vaoBaseVertex);
}
}
static void drawShadowGrass(const std::vector<GLuint> TextureUnits, const std::vector<std::tuple<GLMesh *, core::matrix4, core::matrix4, core::vector3df> > &t)
{
glUseProgram(MeshShader::GrassShadowShaderInstance->Program);
glBindVertexArray(getVAO(EVT_STANDARD));
for (unsigned i = 0; i < t.size(); i++)
{
const GLMesh *mesh = std::get<0>(t[i]);
irr_driver->IncreaseObjectCount();
GLenum ptype = mesh->PrimitiveType;
GLenum itype = mesh->IndexType;
size_t count = mesh->IndexCount;
for (unsigned j = 0; j < TextureUnits.size(); j++)
{
compressTexture(mesh->textures[j], true);
setTexture(TextureUnits[j], getTextureGLuint(mesh->textures[j]), GL_LINEAR, GL_LINEAR_MIPMAP_LINEAR, true);
}
MeshShader::GrassShadowShaderInstance->setUniforms(std::get<1>(t[i]), std::get<3>(t[i]));
glDrawElementsInstancedBaseVertex(ptype, count, itype, (GLvoid *)mesh->vaoOffset, 4, mesh->vaoBaseVertex);
custom_unroll_args<List...>::template exec<T>(Shader, t[i]);
}
}
@ -394,11 +403,11 @@ void IrrDriver::renderShadows()
m_scene_manager->drawAll(scene::ESNRP_SOLID);
drawShadow<MeshShader::ShadowShader, EVT_STANDARD>(MeshShader::ShadowShaderInstance, {}, ListDefaultStandardG::Arguments);
drawShadow<MeshShader::ShadowShader, EVT_2TCOORDS>(MeshShader::ShadowShaderInstance, {}, ListDefault2TCoordG::Arguments);
drawShadow<MeshShader::ShadowShader, EVT_TANGENTS>(MeshShader::ShadowShaderInstance, {}, ListNormalG::Arguments);
drawShadow<MeshShader::RefShadowShader, EVT_STANDARD>(MeshShader::RefShadowShaderInstance, { MeshShader::RefShadowShaderInstance->TU_tex }, ListAlphaRefG::Arguments);
drawShadowGrass({ MeshShader::GrassShadowShaderInstance->TU_tex }, ListGrassG::Arguments);
drawShadow<MeshShader::ShadowShader, EVT_STANDARD, 1>(MeshShader::ShadowShaderInstance, {}, ListDefaultStandardG::Arguments);
drawShadow<MeshShader::ShadowShader, EVT_2TCOORDS, 1>(MeshShader::ShadowShaderInstance, {}, ListDefault2TCoordG::Arguments);
drawShadow<MeshShader::ShadowShader, EVT_TANGENTS, 1>(MeshShader::ShadowShaderInstance, {}, ListNormalG::Arguments);
drawShadow<MeshShader::RefShadowShader, EVT_STANDARD, 1>(MeshShader::RefShadowShaderInstance, { MeshShader::RefShadowShaderInstance->TU_tex }, ListAlphaRefG::Arguments);
drawShadow<MeshShader::GrassShadowShader, EVT_STANDARD, 3, 1>(MeshShader::GrassShadowShaderInstance, { MeshShader::GrassShadowShaderInstance->TU_tex }, ListGrassG::Arguments);
glDisable(GL_POLYGON_OFFSET_FILL);