commit 092bd4814d98a283ff3e6eab6896908d7c947ddc
author daniel@transgaming.com <daniel@transgaming.com@736b8ea6-26fd-11df-bfd4-992fa37f6226> Wed May 12 03:39:36 2010 +0000
committer daniel@transgaming.com <daniel@transgaming.com@736b8ea6-26fd-11df-bfd4-992fa37f6226> Wed May 12 03:39:36 2010 +0000
tree 10b30c4cb8f0c586f1dbc5f5298be72ff140fc48
parent 9c502882d55eb1b0310b30214d026e31dd7da7f7

Minimizes render target changes
TRAC #12154
This patch reduces calls to SetRenderTarget.
Signed-off-by: Nicolas Capens
Signed-off-by: Daniel Koch

Author:    Shannon Woods

git-svn-id: https://angleproject.googlecode.com/svn/trunk@259 736b8ea6-26fd-11df-bfd4-992fa37f6226

src/libGLESv2/Context.cpp

diff --git a/src/libGLESv2/Context.cpp b/src/libGLESv2/Context.cpp
index bece470..98abe79 100644
--- a/src/libGLESv2/Context.cpp
+++ b/src/libGLESv2/Context.cpp
@@ -36,7 +36,10 @@
 Context::Context(const egl::Config *config)
     : mConfig(config)
 {
+    mAppliedRenderTargetSerial = 0;
+
     setClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+
     mState.depthClearValue = 1.0f;
     mState.stencilClearValue = 0;
 
@@ -276,10 +279,14 @@
         mPsProfile = "ps_2_0";
         mVsProfile = "vs_2_0";
     }
+
+    markAllStateDirty();
 }
 
+// This function will set all of the state-related dirty flags, so that all state is set during next pre-draw.
 void Context::markAllStateDirty()
 {
+    mAppliedRenderTargetSerial = 0;
     mAppliedProgram = 0;
 }
 
@@ -1482,6 +1489,7 @@
 bool Context::applyRenderTarget(bool ignoreViewport)
 {
     IDirect3DDevice9 *device = getDevice();
+
     Framebuffer *framebufferObject = getFramebuffer();
 
     if (!framebufferObject || framebufferObject->completeness() != GL_FRAMEBUFFER_COMPLETE)
@@ -1494,7 +1502,13 @@
     IDirect3DSurface9 *renderTarget = framebufferObject->getRenderTarget();
     IDirect3DSurface9 *depthStencil = framebufferObject->getDepthStencil();
 
-    device->SetRenderTarget(0, renderTarget);
+    unsigned int renderTargetSerial = framebufferObject->getRenderTargetSerial();
+    if (renderTargetSerial != mAppliedRenderTargetSerial)
+    {
+        device->SetRenderTarget(0, renderTarget);
+        mAppliedRenderTargetSerial = renderTargetSerial;
+    }
+
     device->SetDepthStencilSurface(depthStencil);
 
     D3DVIEWPORT9 viewport;