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Improved Renderer 

Faster VAO search
Resistance against texture operation during rendering


Former-commit-id: ad9ec2f0ef81a88cb841add227d6d8fb3ee40d42
This commit is contained in:
Lynix 2013-06-15 16:21:57 +02:00
parent 8595a110a4
commit b44be269c1
1 changed files with 20 additions and 25 deletions
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45
src/Nazara/Renderer/Renderer.cpp
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@ -69,7 +69,7 @@ namespace
constexpr unsigned int totalMatrixCount = nzMatrixCombination_Max+1;
using VAO_Key = std::tuple<const NzContext*, const NzIndexBuffer*, const NzVertexBuffer*, const NzVertexDeclaration*, bool>;
using VAO_Key = std::tuple<const NzContext*, const NzIndexBuffer*, const NzVertexBuffer*, bool>;
std::map<VAO_Key, unsigned int> s_vaos;
std::set<unsigned int> s_dirtyTextureUnits;
@ -94,7 +94,6 @@ namespace
const NzRenderTarget* s_target;
const NzShader* s_shader;
const NzVertexBuffer* s_vertexBuffer;
const NzVertexDeclaration* s_vertexDeclaration;
bool s_capabilities[nzRendererCap_Max+1];
bool s_instancing;
bool s_matrixUpdated[totalMatrixCount];
@ -762,7 +761,6 @@ bool NzRenderer::Initialize()
s_useSamplerObjects = NzOpenGL::IsSupported(nzOpenGLExtension_SamplerObjects);
s_useVertexArrayObjects = NzOpenGL::IsSupported(nzOpenGLExtension_VertexArrayObjects);
s_vertexBuffer = nullptr;
s_vertexDeclaration = nullptr;
s_updateFlags = (Update_Matrices | Update_Shader | Update_VAO);
NzVertexElement elements[2];
@ -1325,11 +1323,6 @@ void NzRenderer::SetVertexBuffer(const NzVertexBuffer* vertexBuffer)
if (vertexBuffer && s_vertexBuffer != vertexBuffer)
{
s_vertexBuffer = vertexBuffer;
const NzVertexDeclaration* vertexDeclaration = s_vertexBuffer->GetVertexDeclaration();
if (s_vertexDeclaration != vertexDeclaration)
s_vertexDeclaration = vertexDeclaration;
s_updateFlags |= Update_VAO;
}
}
@ -1579,12 +1572,6 @@ bool NzRenderer::EnsureStateUpdate()
NazaraError("No vertex buffer");
return false;
}
if (!s_vertexDeclaration)
{
NazaraError("No vertex declaration");
return false;
}
#endif
bool update;
@ -1596,7 +1583,7 @@ bool NzRenderer::EnsureStateUpdate()
// On recherche si un VAO existe déjà avec notre configuration
// Note: Les VAOs ne sont pas partagés entre les contextes, ces derniers font donc partie de notre configuration
auto key = std::make_tuple(NzContext::GetCurrent(), s_indexBuffer, s_vertexBuffer, s_vertexDeclaration, s_instancing);
VAO_Key key(NzContext::GetCurrent(), s_indexBuffer, s_vertexBuffer, s_instancing);
auto it = s_vaos.find(key);
if (it == s_vaos.end())
{
@ -1626,14 +1613,16 @@ bool NzRenderer::EnsureStateUpdate()
NzHardwareBuffer* vertexBufferImpl = static_cast<NzHardwareBuffer*>(s_vertexBuffer->GetBuffer()->GetImpl());
vertexBufferImpl->Bind();
const NzVertexDeclaration* vertexDeclaration = s_vertexBuffer->GetVertexDeclaration();
const nzUInt8* buffer = static_cast<const nzUInt8*>(s_vertexBuffer->GetPointer());
unsigned int stride = s_vertexDeclaration->GetStride(nzElementStream_VertexData);
unsigned int stride = vertexDeclaration->GetStride(nzElementStream_VertexData);
for (unsigned int i = 0; i <= nzElementUsage_Max; ++i)
{
nzElementUsage usage = static_cast<nzElementUsage>(i);
if (s_vertexDeclaration->HasElement(nzElementStream_VertexData, usage))
if (vertexDeclaration->HasElement(nzElementStream_VertexData, usage))
{
const NzVertexElement* element = s_vertexDeclaration->GetElement(nzElementStream_VertexData, usage);
const NzVertexElement* element = vertexDeclaration->GetElement(nzElementStream_VertexData, usage);
glEnableVertexAttribArray(NzOpenGL::AttributeIndex[i]);
glVertexAttribPointer(NzOpenGL::AttributeIndex[i],
@ -1647,11 +1636,11 @@ bool NzRenderer::EnsureStateUpdate()
glDisableVertexAttribArray(NzOpenGL::AttributeIndex[i]);
}
unsigned int instanceMatrixIndex = NzOpenGL::AttributeIndex[nzElementUsage_TexCoord] + 8;
if (s_instancing)
{
static_cast<NzHardwareBuffer*>(s_instancingBuffer->GetImpl())->Bind();
unsigned int instanceMatrixIndex = NzOpenGL::AttributeIndex[nzElementUsage_TexCoord] + 8;
for (unsigned int i = 0; i < 4; ++i)
{
glEnableVertexAttribArray(instanceMatrixIndex);
@ -1662,10 +1651,10 @@ bool NzRenderer::EnsureStateUpdate()
}
}
else
{
for (unsigned int i = 8; i < 8+4; ++i)
glDisableVertexAttribArray(NzOpenGL::AttributeIndex[nzElementUsage_TexCoord]+i);
}
{
for (unsigned int i = 0; i < 4; ++i)
glDisableVertexAttribArray(instanceMatrixIndex++);
}
if (s_indexBuffer && !s_indexBuffer->IsSequential())
{
@ -1693,8 +1682,14 @@ bool NzRenderer::EnsureStateUpdate()
#endif
}
///FIXME: Rebinder le shader, les textures et le VAO via l'API NzOpenGL ?
// Le problème étant que si une modification est faite à une ressource, celle-ci ne sera pas rebindée alors qu'elle le devrait
///FIXME: Comment détecter le besoin de réactiver le VAO ? (Est-ce même nécessaire ?)
// On vérifie que les textures actuellement bindées sont bien nos textures
for (unsigned int i = 0; i < s_maxTextureUnit; ++i)
{
const NzTexture* texture = s_textureUnits[i].texture;
if (texture)
NzOpenGL::BindTexture(i, texture->GetType(), texture->GetOpenGLID());
}
return true;
}