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Use a temp FBO at 1x to upload stencil.

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This improves performance at > 1x resolutions.
This commit is contained in:
Unknown W. Brackets 2014-06-28 01:19:07 -07:00
parent d2f43889a0
commit 464b453748
1 changed files with 42 additions and 6 deletions
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48
GPU/GLES/StencilBuffer.cpp
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@ -112,10 +112,37 @@ bool FramebufferManager::NotifyStencilUpload(u32 addr, int size) {
break;
}
if (dstBuffer->fbo) {
bool useBlit = false;
bool useNV = false;
#ifndef USING_GLES2
if (gl_extensions.FBO_ARB) {
useNV = false;
useBlit = true;
}
#else
if (gl_extensions.GLES3 || gl_extensions.NV_framebuffer_blit) {
useNV = !gl_extensions.GLES3;
useBlit = true;
}
#endif
// Our fragment shader (and discard) is slow. Since the source is 1x, we can stencil to 1x.
// Then after we're done, we'll just blit it across and stretch it there.
if (dstBuffer->bufferWidth == dstBuffer->renderWidth || !dstBuffer->fbo) {
useBlit = false;
}
u16 w = useBlit ? dstBuffer->bufferWidth : dstBuffer->renderWidth;
u16 h = useBlit ? dstBuffer->bufferHeight : dstBuffer->renderHeight;
FBO *blitFBO = NULL;
if (useBlit) {
blitFBO = GetTempFBO(w, h, FBO_8888);
fbo_bind_as_render_target(blitFBO);
} else if (dstBuffer->fbo) {
fbo_bind_as_render_target(dstBuffer->fbo);
}
glViewport(0, 0, dstBuffer->renderWidth, dstBuffer->renderHeight);
glViewport(0, 0, w, h);
glClearStencil(0);
glClear(GL_STENCIL_BUFFER_BIT);
@ -140,11 +167,20 @@ bool FramebufferManager::NotifyStencilUpload(u32 addr, int size) {
}
glStencilMask(0xFF);
if (currentRenderVfb_) {
RebindFramebuffer();
} else {
fbo_unbind();
if (useBlit) {
fbo_bind_as_render_target(dstBuffer->fbo);
fbo_bind_for_read(blitFBO);
if (!useNV) {
glBlitFramebuffer(0, 0, w, h, 0, 0, dstBuffer->renderWidth, dstBuffer->renderHeight, GL_STENCIL_BUFFER_BIT, GL_NEAREST);
} else {
#if defined(USING_GLES2) && defined(ANDROID) // We only support this extension on Android, it's not even available on PC.
glBlitFramebufferNV(0, 0, w, h, 0, 0, dstBuffer->renderWidth, dstBuffer->renderHeight, GL_STENCIL_BUFFER_BIT, GL_NEAREST);
#endif // defined(USING_GLES2) && defined(ANDROID)
}
}
fbo_unbind();
RebindFramebuffer();
glstate.viewport.restore();
return true;
}