OrdinaryMagician/vkdoom_m
OrdinaryMagician/vkdoom_m
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Reduce number of blits required in stereo 3D by tracking current eye.

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This commit is contained in:
Christopher Bruns 2019-03-03 09:35:38 -08:00 • committed by Christoph Oelckers
commit 0fb940632a
5 changed files with 40 additions and 26 deletions
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21
src/rendering/gl/renderer/gl_renderbuffers.cpp
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@ -532,7 +532,7 @@ void FGLRenderBuffers::BlitSceneToTexture()
//
//==========================================================================
void FGLRenderBuffers::BlitToEyeTexture(int eye)
void FGLRenderBuffers::BlitToEyeTexture(int eye, bool allowInvalidate)
{
CreateEyeBuffers(eye);
@ -540,7 +540,7 @@ void FGLRenderBuffers::BlitToEyeTexture(int eye)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mEyeFBs[eye].handle);
glBlitFramebuffer(0, 0, mWidth, mHeight, 0, 0, mWidth, mHeight, GL_COLOR_BUFFER_BIT, GL_NEAREST);
if ((gl.flags & RFL_INVALIDATE_BUFFER) != 0)
if ((gl.flags & RFL_INVALIDATE_BUFFER) != 0 && allowInvalidate)
{
GLenum attachments[2] = { GL_COLOR_ATTACHMENT0, GL_DEPTH_STENCIL_ATTACHMENT };
glInvalidateFramebuffer(GL_READ_FRAMEBUFFER, 2, attachments);
@ -552,7 +552,7 @@ void FGLRenderBuffers::BlitToEyeTexture(int eye)
void FGLRenderBuffers::BlitFromEyeTexture(int eye)
{
CreateEyeBuffers(eye);
if (mEyeFBs.Size() <= unsigned(eye)) return;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mPipelineFB[mCurrentPipelineTexture].handle);
glBindFramebuffer(GL_READ_FRAMEBUFFER, mEyeFBs[eye].handle);
@ -1002,4 +1002,17 @@ void FGLRenderBuffers::RenderEffect(const FString &name)
FGLDebug::PopGroup();
}
}
// Store the current stereo 3D eye buffer, and Load the next one
int FGLRenderBuffers::NextEye(int eyeCount)
{
int nextEye = (mCurrentEye + 1) % eyeCount;
if (nextEye == mCurrentEye) return mCurrentEye;
BlitToEyeTexture(mCurrentEye);
mCurrentEye = nextEye;
BlitFromEyeTexture(mCurrentEye);
return mCurrentEye;
}
} // namespace OpenGLRenderer