Moved VertexDeclarationCache to its own header and source file.
TRAC #22016
Signed-off-by: Daniel Koch
Author: Nicolas Capens
git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1490 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/renderer/VertexDeclarationCache.cpp b/src/libGLESv2/renderer/VertexDeclarationCache.cpp
new file mode 100644
index 0000000..7beaaeb
--- /dev/null
+++ b/src/libGLESv2/renderer/VertexDeclarationCache.cpp
@@ -0,0 +1,215 @@
+//
+// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// VertexDeclarationCache.cpp: Implements a helper class to construct and cache vertex declarations.
+
+#include "libGLESv2/ProgramBinary.h"
+#include "libGLESv2/VertexDataManager.h"
+#include "libGLESv2/renderer/VertexDeclarationCache.h"
+
+namespace rx
+{
+
+VertexDeclarationCache::VertexDeclarationCache() : mMaxLru(0)
+{
+ for (int i = 0; i < NUM_VERTEX_DECL_CACHE_ENTRIES; i++)
+ {
+ mVertexDeclCache[i].vertexDeclaration = NULL;
+ mVertexDeclCache[i].lruCount = 0;
+ }
+
+ for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
+ {
+ mAppliedVBs[i].serial = 0;
+ }
+
+ mLastSetVDecl = NULL;
+ mInstancingEnabled = true;
+}
+
+VertexDeclarationCache::~VertexDeclarationCache()
+{
+ for (int i = 0; i < NUM_VERTEX_DECL_CACHE_ENTRIES; i++)
+ {
+ if (mVertexDeclCache[i].vertexDeclaration)
+ {
+ mVertexDeclCache[i].vertexDeclaration->Release();
+ }
+ }
+}
+
+GLenum VertexDeclarationCache::applyDeclaration(IDirect3DDevice9 *device, gl::TranslatedAttribute attributes[], gl::ProgramBinary *programBinary, GLsizei instances, GLsizei *repeatDraw)
+{
+ *repeatDraw = 1;
+
+ int indexedAttribute = gl::MAX_VERTEX_ATTRIBS;
+ int instancedAttribute = gl::MAX_VERTEX_ATTRIBS;
+
+ if (instances > 0)
+ {
+ // Find an indexed attribute to be mapped to D3D stream 0
+ for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
+ {
+ if (attributes[i].active)
+ {
+ if (indexedAttribute == gl::MAX_VERTEX_ATTRIBS)
+ {
+ if (attributes[i].divisor == 0)
+ {
+ indexedAttribute = i;
+ }
+ }
+ else if (instancedAttribute == gl::MAX_VERTEX_ATTRIBS)
+ {
+ if (attributes[i].divisor != 0)
+ {
+ instancedAttribute = i;
+ }
+ }
+ else break; // Found both an indexed and instanced attribute
+ }
+ }
+
+ if (indexedAttribute == gl::MAX_VERTEX_ATTRIBS)
+ {
+ return GL_INVALID_OPERATION;
+ }
+ }
+
+ D3DVERTEXELEMENT9 elements[gl::MAX_VERTEX_ATTRIBS + 1];
+ D3DVERTEXELEMENT9 *element = &elements[0];
+
+ for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
+ {
+ if (attributes[i].active)
+ {
+ int stream = i;
+
+ if (instances > 0)
+ {
+ // Due to a bug on ATI cards we can't enable instancing when none of the attributes are instanced.
+ if (instancedAttribute == gl::MAX_VERTEX_ATTRIBS)
+ {
+ *repeatDraw = instances;
+ }
+ else
+ {
+ if (i == indexedAttribute)
+ {
+ stream = 0;
+ }
+ else if (i == 0)
+ {
+ stream = indexedAttribute;
+ }
+
+ UINT frequency = 1;
+
+ if (attributes[i].divisor == 0)
+ {
+ frequency = D3DSTREAMSOURCE_INDEXEDDATA | instances;
+ }
+ else
+ {
+ frequency = D3DSTREAMSOURCE_INSTANCEDATA | attributes[i].divisor;
+ }
+
+ device->SetStreamSourceFreq(stream, frequency);
+ mInstancingEnabled = true;
+ }
+ }
+
+ if (mAppliedVBs[stream].serial != attributes[i].serial ||
+ mAppliedVBs[stream].stride != attributes[i].stride ||
+ mAppliedVBs[stream].offset != attributes[i].offset)
+ {
+ device->SetStreamSource(stream, attributes[i].vertexBuffer, attributes[i].offset, attributes[i].stride);
+ mAppliedVBs[stream].serial = attributes[i].serial;
+ mAppliedVBs[stream].stride = attributes[i].stride;
+ mAppliedVBs[stream].offset = attributes[i].offset;
+ }
+
+ element->Stream = stream;
+ element->Offset = 0;
+ element->Type = attributes[i].type;
+ element->Method = D3DDECLMETHOD_DEFAULT;
+ element->Usage = D3DDECLUSAGE_TEXCOORD;
+ element->UsageIndex = programBinary->getSemanticIndex(i);
+ element++;
+ }
+ }
+
+ if (instances == 0 || instancedAttribute == gl::MAX_VERTEX_ATTRIBS)
+ {
+ if (mInstancingEnabled)
+ {
+ for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
+ {
+ device->SetStreamSourceFreq(i, 1);
+ }
+
+ mInstancingEnabled = false;
+ }
+ }
+
+ static const D3DVERTEXELEMENT9 end = D3DDECL_END();
+ *(element++) = end;
+
+ for (int i = 0; i < NUM_VERTEX_DECL_CACHE_ENTRIES; i++)
+ {
+ VertexDeclCacheEntry *entry = &mVertexDeclCache[i];
+ if (memcmp(entry->cachedElements, elements, (element - elements) * sizeof(D3DVERTEXELEMENT9)) == 0 && entry->vertexDeclaration)
+ {
+ entry->lruCount = ++mMaxLru;
+ if(entry->vertexDeclaration != mLastSetVDecl)
+ {
+ device->SetVertexDeclaration(entry->vertexDeclaration);
+ mLastSetVDecl = entry->vertexDeclaration;
+ }
+
+ return GL_NO_ERROR;
+ }
+ }
+
+ VertexDeclCacheEntry *lastCache = mVertexDeclCache;
+
+ for (int i = 0; i < NUM_VERTEX_DECL_CACHE_ENTRIES; i++)
+ {
+ if (mVertexDeclCache[i].lruCount < lastCache->lruCount)
+ {
+ lastCache = &mVertexDeclCache[i];
+ }
+ }
+
+ if (lastCache->vertexDeclaration != NULL)
+ {
+ lastCache->vertexDeclaration->Release();
+ lastCache->vertexDeclaration = NULL;
+ // mLastSetVDecl is set to the replacement, so we don't have to worry
+ // about it.
+ }
+
+ memcpy(lastCache->cachedElements, elements, (element - elements) * sizeof(D3DVERTEXELEMENT9));
+ device->CreateVertexDeclaration(elements, &lastCache->vertexDeclaration);
+ device->SetVertexDeclaration(lastCache->vertexDeclaration);
+ mLastSetVDecl = lastCache->vertexDeclaration;
+ lastCache->lruCount = ++mMaxLru;
+
+ return GL_NO_ERROR;
+}
+
+void VertexDeclarationCache::markStateDirty()
+{
+ for (int i = 0; i < gl::MAX_VERTEX_ATTRIBS; i++)
+ {
+ mAppliedVBs[i].serial = 0;
+ }
+
+ mLastSetVDecl = NULL;
+ mInstancingEnabled = true; // Forces it to be disabled when not used
+}
+
+}