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texture_cache: Reintroduce preserve_contents accurately

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This reverts commit 94b0e2e5da.

preserve_contents proved to be a meaningful optimization. This commit
reintroduces it but properly implemented on OpenGL.

We have to make sure the clear removes all the previous contents of the
image.

It's not currently implemented on Vulkan because we can do smart things
there that's preferred to be introduced in a separate commit.
This commit is contained in:
ReinUsesLisp 2020-04-26 19:53:02 -03:00
parent 378aed07e9
commit 8da16cf9fb
4 changed files with 81 additions and 41 deletions
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4
src/video_core/renderer_vulkan/vk_rasterizer.cpp
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@ -652,7 +652,7 @@ RasterizerVulkan::Texceptions RasterizerVulkan::UpdateAttachments() {
Texceptions texceptions;
for (std::size_t rt = 0; rt < Maxwell::NumRenderTargets; ++rt) {
if (update_rendertargets) {
color_attachments[rt] = texture_cache.GetColorBufferSurface(rt);
color_attachments[rt] = texture_cache.GetColorBufferSurface(rt, true);
}
if (color_attachments[rt] && WalkAttachmentOverlaps(*color_attachments[rt])) {
texceptions[rt] = true;
@ -660,7 +660,7 @@ RasterizerVulkan::Texceptions RasterizerVulkan::UpdateAttachments() {
}
if (update_rendertargets) {
zeta_attachment = texture_cache.GetDepthBufferSurface();
zeta_attachment = texture_cache.GetDepthBufferSurface(true);
}
if (zeta_attachment && WalkAttachmentOverlaps(*zeta_attachment)) {
texceptions[ZETA_TEXCEPTION_INDEX] = true;