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Merge framebuffer layout pre-transitions into render pass subpass dependencies.

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With this, drivers should be able to completely get rid of layout
transitions into render passes that use CLEAR, at least.
This commit is contained in:
Henrik Rydgård committed 2018-03-18 09:55:36 +01:00
1 parent 33a1e6a080
commit f43935b030
3 files changed
+70 -67
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ext/native/thin3d/VulkanQueueRunner.cpp
+62 -64
View File
@@ -150,8 +150,8 @@ void VulkanQueueRunner::InitBackbufferRenderPass() {
assert(res == VK_SUCCESS);
}
VkRenderPass VulkanQueueRunner::GetRenderPass(VKRRenderPassAction colorLoadAction, VKRRenderPassAction depthLoadAction, VKRRenderPassAction stencilLoadAction) {
RPKey key{ colorLoadAction, depthLoadAction, stencilLoadAction };
VkRenderPass VulkanQueueRunner::GetRenderPass(VKRRenderPassAction colorLoadAction, VKRRenderPassAction depthLoadAction, VKRRenderPassAction stencilLoadAction, VkImageLayout prevColorLayout, VkImageLayout prevDepthLayout) {
RPKey key{ colorLoadAction, depthLoadAction, stencilLoadAction, prevColorLayout, prevDepthLayout };
auto pass = renderPasses_.Get(key);
if (pass) {
return pass;
@@ -179,7 +179,7 @@ VkRenderPass VulkanQueueRunner::GetRenderPass(VKRRenderPassAction colorLoadActio
attachments[0].initialLayout = VK_IMAGE_LAYOUT_GENERAL;
attachments[0].finalLayout = VK_IMAGE_LAYOUT_GENERAL; // TODO: Look into auto-transitioning to SAMPLED when appropriate.
#else
attachments[0].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
attachments[0].initialLayout = prevColorLayout;
attachments[0].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; // TODO: Look into auto-transitioning to SAMPLED when appropriate.
#endif
attachments[0].flags = 0;
@@ -214,7 +214,7 @@ VkRenderPass VulkanQueueRunner::GetRenderPass(VKRRenderPassAction colorLoadActio
attachments[1].initialLayout = VK_IMAGE_LAYOUT_GENERAL;
attachments[1].finalLayout = VK_IMAGE_LAYOUT_GENERAL;
#else
attachments[1].initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
attachments[1].initialLayout = prevDepthLayout;
attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
#endif
attachments[1].flags = 0;
@@ -239,12 +239,65 @@ VkRenderPass VulkanQueueRunner::GetRenderPass(VKRRenderPassAction colorLoadActio
subpass.preserveAttachmentCount = 0;
subpass.pPreserveAttachments = nullptr;
VkSubpassDependency dep{};
dep.srcSubpass = VK_SUBPASS_EXTERNAL;
dep.dstSubpass = 0;
dep.dependencyFlags = 0;
switch (prevColorLayout) {
case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
// Already the right color layout. Unclear that we need to do a lot here..
break;
case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
dep.srcAccessMask |= VK_ACCESS_SHADER_READ_BIT;
dep.srcStageMask |= VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
dep.srcAccessMask |= VK_ACCESS_TRANSFER_WRITE_BIT;
dep.srcStageMask |= VK_PIPELINE_STAGE_TRANSFER_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
dep.srcAccessMask |= VK_ACCESS_TRANSFER_READ_BIT;
dep.srcStageMask |= VK_PIPELINE_STAGE_TRANSFER_BIT;
break;
default:
_dbg_assert_msg_(G3D, false, "GetRenderPass: Unexpected color layout %d", (int)prevColorLayout);
break;
}
switch (prevDepthLayout) {
case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
// Already the right depth layout. Unclear that we need to do a lot here..
break;
case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
dep.srcAccessMask |= VK_ACCESS_SHADER_READ_BIT;
dep.srcStageMask |= VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
dep.srcAccessMask |= VK_ACCESS_TRANSFER_READ_BIT;
dep.srcStageMask |= VK_PIPELINE_STAGE_TRANSFER_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
dep.srcAccessMask |= VK_ACCESS_TRANSFER_WRITE_BIT;
dep.srcStageMask |= VK_PIPELINE_STAGE_TRANSFER_BIT;
break;
default:
_dbg_assert_msg_(G3D, false, "PerformBindRT: Unexpected depth layout %d", (int)prevDepthLayout);
break;
}
dep.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT | VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT | VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT;
dep.dstAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
VkRenderPassCreateInfo rp{ VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO };
rp.attachmentCount = 2;
rp.pAttachments = attachments;
rp.subpassCount = 1;
rp.pSubpasses = &subpass;
rp.dependencyCount = 0;
if (dep.srcAccessMask) {
rp.dependencyCount = 1;
rp.pDependencies = &dep;
}
VkResult res = vkCreateRenderPass(vulkan_->GetDevice(), &rp, nullptr, &pass);
_assert_(res == VK_SUCCESS);
@@ -605,67 +658,12 @@ void VulkanQueueRunner::PerformBindFramebufferAsRenderTarget(const VKRStep &step
framebuf = fb->framebuf;
w = fb->width;
h = fb->height;
// Now, if the image needs transitioning, let's transition.
// The backbuffer does not, that's handled by VulkanContext.
if (step.render.framebuffer->color.layout != VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL) {
VkAccessFlags srcAccessMask = 0;
VkPipelineStageFlags srcStage = 0;
switch (fb->color.layout) {
case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
srcAccessMask = VK_ACCESS_SHADER_READ_BIT;
srcStage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
srcStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
srcStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
break;
default:
_dbg_assert_msg_(G3D, false, "PerformBindRT: Unexpected color layout %d", (int)fb->color.layout);
break;
}
// Due to a known bug in the Mali driver, pass the level count explicitly.
TransitionImageLayout2(cmd, fb->color.image, 0, 1, VK_IMAGE_ASPECT_COLOR_BIT,
fb->color.layout, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
srcStage, VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
srcAccessMask, VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT | VK_ACCESS_COLOR_ATTACHMENT_READ_BIT);
fb->color.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
}
if (fb->depth.layout != VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
VkAccessFlags srcAccessMask = 0;
VkPipelineStageFlags srcStage = 0;
renderPass = GetRenderPass(step.render.color, step.render.depth, step.render.stencil, fb->color.layout, fb->depth.layout);
// We now do any layout pretransitions as part of the render pass.
fb->color.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
fb->depth.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
switch (fb->depth.layout) {
case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
srcAccessMask = VK_ACCESS_SHADER_READ_BIT;
srcStage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
srcStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
srcStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
break;
default:
_dbg_assert_msg_(G3D, false, "PerformBindRT: Unexpected depth layout %d", (int)fb->color.layout);
break;
}
// Due to a known bug in the Mali driver, pass the level count explicitly (last param).
TransitionImageLayout2(cmd, fb->depth.image, 0, 1, VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT,
fb->depth.layout, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
srcStage, VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT | VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT,
srcAccessMask, VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT);
fb->depth.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
}
renderPass = GetRenderPass(step.render.color, step.render.depth, step.render.stencil);
if (step.render.color == VKRRenderPassAction::CLEAR) {
Uint8x4ToFloat4(clearVal[0].color.float32, step.render.clearColor);
numClearVals = 1;