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Clear and InvalidateFramebuffer optimization
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parent
fa2bcebd51
commit
5eeac830eb
3 changed files with 12 additions and 8 deletions
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@ -174,18 +174,18 @@ void FGLRenderer::Set3DViewport(bool mainview)
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mBuffers->BindSceneFB();
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}
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// Always clear all buffers with scissor test disabled.
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// This is faster on newer hardware because it allows the GPU to skip
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// reading from slower memory where the full buffers are stored.
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glDisable(GL_SCISSOR_TEST);
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
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const auto &bounds = mSceneViewport;
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glViewport(bounds.left, bounds.top, bounds.width, bounds.height);
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glScissor(bounds.left, bounds.top, bounds.width, bounds.height);
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glEnable(GL_SCISSOR_TEST);
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#ifdef _DEBUG
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
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#else
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glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
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#endif
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glEnable(GL_MULTISAMPLE);
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glEnable(GL_DEPTH_TEST);
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@ -244,6 +244,8 @@ void gl_LoadExtensions()
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gl.buffermethod = BM_PERSISTENT;
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}
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if (gl.version >= 4.3f || CheckExtension("GL_ARB_invalidate_subdata")) gl.flags |= RFL_INVALIDATE_BUFFER;
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const char *lm = Args->CheckValue("-lightmethod");
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if (lm != NULL)
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{
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@ -23,7 +23,9 @@ enum RenderFlags
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RFL_NO_RGBA16F = 32,
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RFL_NO_DEPTHSTENCIL = 64,
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RFL_NO_CLIP_PLANES = 128
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RFL_NO_CLIP_PLANES = 128,
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RFL_INVALIDATE_BUFFER = 256
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};
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enum TexMode
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