C++ GrVkRenderTarget::compatibleRenderPassHandle方法代码示例

void GrVkGpuRTCommandBuffer::discard() {
    GrVkRenderTarget* vkRT = static_cast<GrVkRenderTarget*>(fRenderTarget);

    CommandBufferInfo& cbInfo = fCommandBufferInfos[fCurrentCmdInfo];
    if (cbInfo.fIsEmpty) {
        // Change the render pass to do a don't-care load for both color & stencil
        GrVkRenderPass::LoadStoreOps vkColorOps(VK_ATTACHMENT_LOAD_OP_DONT_CARE,
                                                VK_ATTACHMENT_STORE_OP_STORE);
        GrVkRenderPass::LoadStoreOps vkStencilOps(VK_ATTACHMENT_LOAD_OP_DONT_CARE,
                                                  VK_ATTACHMENT_STORE_OP_STORE);

        const GrVkRenderPass* oldRP = cbInfo.fRenderPass;

        const GrVkResourceProvider::CompatibleRPHandle& rpHandle =
            vkRT->compatibleRenderPassHandle();
        if (rpHandle.isValid()) {
            cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(rpHandle,
                                                                         vkColorOps,
                                                                         vkStencilOps);
        } else {
            cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(*vkRT,
                                                                         vkColorOps,
                                                                         vkStencilOps);
        }

        SkASSERT(cbInfo.fRenderPass->isCompatible(*oldRP));
        oldRP->unref(fGpu);
        cbInfo.fBounds.join(fRenderTarget->getBoundsRect());
        cbInfo.fLoadStoreState = LoadStoreState::kStartsWithDiscard;
    }
}

void GrVkGpuRTCommandBuffer::addAdditionalRenderPass() {
    GrVkRenderTarget* vkRT = static_cast<GrVkRenderTarget*>(fRenderTarget);

    fCommandBufferInfos[fCurrentCmdInfo].currentCmdBuf()->end(fGpu);

    CommandBufferInfo& cbInfo = fCommandBufferInfos.push_back();
    fCurrentCmdInfo++;

    GrVkRenderPass::LoadStoreOps vkColorOps(VK_ATTACHMENT_LOAD_OP_LOAD,
                                            VK_ATTACHMENT_STORE_OP_STORE);
    GrVkRenderPass::LoadStoreOps vkStencilOps(VK_ATTACHMENT_LOAD_OP_LOAD,
                                              VK_ATTACHMENT_STORE_OP_STORE);

    const GrVkResourceProvider::CompatibleRPHandle& rpHandle =
            vkRT->compatibleRenderPassHandle();
    if (rpHandle.isValid()) {
        cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(rpHandle,
                                                                     vkColorOps,
                                                                     vkStencilOps);
    } else {
        cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(*vkRT,
                                                                     vkColorOps,
                                                                     vkStencilOps);
    }
    cbInfo.fLoadStoreState = LoadStoreState::kLoadAndStore;

    cbInfo.fCommandBuffers.push_back(fGpu->cmdPool()->findOrCreateSecondaryCommandBuffer(fGpu));
    // It shouldn't matter what we set the clear color to here since we will assume loading of the
    // attachment.
    memset(&cbInfo.fColorClearValue, 0, sizeof(VkClearValue));
    cbInfo.fBounds.setEmpty();

    cbInfo.currentCmdBuf()->begin(fGpu, vkRT->framebuffer(), cbInfo.fRenderPass);
}

void GrVkGpuCommandBuffer::discard(GrRenderTarget* target) {
    if (fIsEmpty) {
        // We will change the render pass to do a clear load instead
        GrVkRenderPass::LoadStoreOps vkColorOps(VK_ATTACHMENT_LOAD_OP_DONT_CARE,
                                                VK_ATTACHMENT_STORE_OP_STORE);
        GrVkRenderPass::LoadStoreOps vkStencilOps(VK_ATTACHMENT_LOAD_OP_DONT_CARE,
                                                  VK_ATTACHMENT_STORE_OP_STORE);

        const GrVkRenderPass* oldRP = fRenderPass;

        GrVkRenderTarget* vkRT = static_cast<GrVkRenderTarget*>(target);
        const GrVkResourceProvider::CompatibleRPHandle& rpHandle =
            vkRT->compatibleRenderPassHandle();
        if (rpHandle.isValid()) {
            fRenderPass = fGpu->resourceProvider().findRenderPass(rpHandle,
                                                                  vkColorOps,
                                                                  vkStencilOps);
        } else {
            fRenderPass = fGpu->resourceProvider().findRenderPass(*vkRT,
                                                                  vkColorOps,
                                                                  vkStencilOps);
        }

        SkASSERT(fRenderPass->isCompatible(*oldRP));
        oldRP->unref(fGpu);
        fStartsWithClear = false;
    }
}

void GrVkGpuRTCommandBuffer::init() {
    GrVkRenderPass::LoadStoreOps vkColorOps(fVkColorLoadOp, fVkColorStoreOp);
    GrVkRenderPass::LoadStoreOps vkStencilOps(fVkStencilLoadOp, fVkStencilStoreOp);

    CommandBufferInfo& cbInfo = fCommandBufferInfos.push_back();
    SkASSERT(fCommandBufferInfos.count() == 1);
    fCurrentCmdInfo = 0;

    GrVkRenderTarget* vkRT = static_cast<GrVkRenderTarget*>(fRenderTarget);
    const GrVkResourceProvider::CompatibleRPHandle& rpHandle = vkRT->compatibleRenderPassHandle();
    if (rpHandle.isValid()) {
        cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(rpHandle,
                                                                     vkColorOps,
                                                                     vkStencilOps);
    } else {
        cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(*vkRT,
                                                                     vkColorOps,
                                                                     vkStencilOps);
    }

    cbInfo.fColorClearValue.color.float32[0] = fClearColor[0];
    cbInfo.fColorClearValue.color.float32[1] = fClearColor[1];
    cbInfo.fColorClearValue.color.float32[2] = fClearColor[2];
    cbInfo.fColorClearValue.color.float32[3] = fClearColor[3];

    if (VK_ATTACHMENT_LOAD_OP_CLEAR == fVkColorLoadOp) {
        cbInfo.fBounds = SkRect::MakeWH(vkRT->width(), vkRT->height());
    } else {
        cbInfo.fBounds.setEmpty();
    }

    if (VK_ATTACHMENT_LOAD_OP_CLEAR == fVkColorLoadOp) {
        cbInfo.fLoadStoreState = LoadStoreState::kStartsWithClear;
    } else if (VK_ATTACHMENT_LOAD_OP_LOAD == fVkColorLoadOp &&
               VK_ATTACHMENT_STORE_OP_STORE == fVkColorStoreOp) {
        cbInfo.fLoadStoreState = LoadStoreState::kLoadAndStore;
    } else if (VK_ATTACHMENT_LOAD_OP_DONT_CARE == fVkColorLoadOp) {
        cbInfo.fLoadStoreState = LoadStoreState::kStartsWithDiscard;
    }

    cbInfo.fCommandBuffers.push_back(fGpu->cmdPool()->findOrCreateSecondaryCommandBuffer(fGpu));
    cbInfo.currentCmdBuf()->begin(fGpu, vkRT->framebuffer(), cbInfo.fRenderPass);
}

void GrVkGpuRTCommandBuffer::copy(GrSurface* src, GrSurfaceOrigin srcOrigin, const SkIRect& srcRect,
                                  const SkIPoint& dstPoint) {
    CommandBufferInfo& cbInfo = fCommandBufferInfos[fCurrentCmdInfo];
    if (!cbInfo.fIsEmpty || LoadStoreState::kStartsWithClear == cbInfo.fLoadStoreState) {
        this->addAdditionalRenderPass();
    }

    fPreCommandBufferTasks.emplace<Copy>(
            src, srcOrigin, srcRect, dstPoint,
            LoadStoreState::kStartsWithDiscard == cbInfo.fLoadStoreState);
    ++fCommandBufferInfos[fCurrentCmdInfo].fNumPreCmds;

    if (LoadStoreState::kLoadAndStore != cbInfo.fLoadStoreState) {
        // Change the render pass to do a load and store so we don't lose the results of our copy
        GrVkRenderPass::LoadStoreOps vkColorOps(VK_ATTACHMENT_LOAD_OP_LOAD,
                                                VK_ATTACHMENT_STORE_OP_STORE);
        GrVkRenderPass::LoadStoreOps vkStencilOps(VK_ATTACHMENT_LOAD_OP_LOAD,
                                                  VK_ATTACHMENT_STORE_OP_STORE);

        const GrVkRenderPass* oldRP = cbInfo.fRenderPass;

        GrVkRenderTarget* vkRT = static_cast<GrVkRenderTarget*>(fRenderTarget);
        const GrVkResourceProvider::CompatibleRPHandle& rpHandle =
                vkRT->compatibleRenderPassHandle();
        if (rpHandle.isValid()) {
            cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(rpHandle,
                                                                         vkColorOps,
                                                                         vkStencilOps);
        } else {
            cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(*vkRT,
                                                                         vkColorOps,
                                                                         vkStencilOps);
        }
        SkASSERT(cbInfo.fRenderPass->isCompatible(*oldRP));
        oldRP->unref(fGpu);

        cbInfo.fLoadStoreState = LoadStoreState::kLoadAndStore;

    }
}

void GrVkGpuRTCommandBuffer::onClear(const GrFixedClip& clip, const SkPMColor4f& color) {
    GrVkRenderTarget* vkRT = static_cast<GrVkRenderTarget*>(fRenderTarget);

    // parent class should never let us get here with no RT
    SkASSERT(!clip.hasWindowRectangles());

    CommandBufferInfo& cbInfo = fCommandBufferInfos[fCurrentCmdInfo];

    VkClearColorValue vkColor = {{color.fR, color.fG, color.fB, color.fA}};

    if (cbInfo.fIsEmpty && !clip.scissorEnabled()) {
        // Change the render pass to do a clear load
        GrVkRenderPass::LoadStoreOps vkColorOps(VK_ATTACHMENT_LOAD_OP_CLEAR,
                                                VK_ATTACHMENT_STORE_OP_STORE);
        // Preserve the stencil buffer's load & store settings
        GrVkRenderPass::LoadStoreOps vkStencilOps(fVkStencilLoadOp, fVkStencilStoreOp);

        const GrVkRenderPass* oldRP = cbInfo.fRenderPass;

        const GrVkResourceProvider::CompatibleRPHandle& rpHandle =
            vkRT->compatibleRenderPassHandle();
        if (rpHandle.isValid()) {
            cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(rpHandle,
                                                                         vkColorOps,
                                                                         vkStencilOps);
        } else {
            cbInfo.fRenderPass = fGpu->resourceProvider().findRenderPass(*vkRT,
                                                                         vkColorOps,
                                                                         vkStencilOps);
        }

        SkASSERT(cbInfo.fRenderPass->isCompatible(*oldRP));
        oldRP->unref(fGpu);

        cbInfo.fColorClearValue.color = {{color.fR, color.fG, color.fB, color.fA}};
        cbInfo.fLoadStoreState = LoadStoreState::kStartsWithClear;
        // Update command buffer bounds
        cbInfo.fBounds.join(fRenderTarget->getBoundsRect());
        return;
    }

    // We always do a sub rect clear with clearAttachments since we are inside a render pass
    VkClearRect clearRect;
    // Flip rect if necessary
    SkIRect vkRect;
    if (!clip.scissorEnabled()) {
        vkRect.setXYWH(0, 0, fRenderTarget->width(), fRenderTarget->height());
    } else if (kBottomLeft_GrSurfaceOrigin != fOrigin) {
        vkRect = clip.scissorRect();
    } else {
        const SkIRect& scissor = clip.scissorRect();
        vkRect.setLTRB(scissor.fLeft, fRenderTarget->height() - scissor.fBottom,
                       scissor.fRight, fRenderTarget->height() - scissor.fTop);
    }
    clearRect.rect.offset = { vkRect.fLeft, vkRect.fTop };
    clearRect.rect.extent = { (uint32_t)vkRect.width(), (uint32_t)vkRect.height() };
    clearRect.baseArrayLayer = 0;
    clearRect.layerCount = 1;

    uint32_t colorIndex;
    SkAssertResult(cbInfo.fRenderPass->colorAttachmentIndex(&colorIndex));

    VkClearAttachment attachment;
    attachment.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
    attachment.colorAttachment = colorIndex;
    attachment.clearValue.color = vkColor;

    cbInfo.currentCmdBuf()->clearAttachments(fGpu, 1, &attachment, 1, &clearRect);
    cbInfo.fIsEmpty = false;

    // Update command buffer bounds
    if (!clip.scissorEnabled()) {
        cbInfo.fBounds.join(fRenderTarget->getBoundsRect());
    } else {
        cbInfo.fBounds.join(SkRect::Make(clip.scissorRect()));
    }
    return;
}

void GrVkGpuCommandBuffer::onClear(GrRenderTarget* target, const GrFixedClip& clip, GrColor color) {
    // parent class should never let us get here with no RT
    SkASSERT(target);
    SkASSERT(!clip.hasWindowRectangles());

    VkClearColorValue vkColor;
    GrColorToRGBAFloat(color, vkColor.float32);

    GrVkRenderTarget* vkRT = static_cast<GrVkRenderTarget*>(target);

    if (fIsEmpty && !clip.scissorEnabled()) {
        // We will change the render pass to do a clear load instead
        GrVkRenderPass::LoadStoreOps vkColorOps(VK_ATTACHMENT_LOAD_OP_CLEAR,
                                                VK_ATTACHMENT_STORE_OP_STORE);
        GrVkRenderPass::LoadStoreOps vkStencilOps(VK_ATTACHMENT_LOAD_OP_LOAD,
                                                  VK_ATTACHMENT_STORE_OP_STORE);

        const GrVkRenderPass* oldRP = fRenderPass;

        const GrVkResourceProvider::CompatibleRPHandle& rpHandle =
            vkRT->compatibleRenderPassHandle();
        if (rpHandle.isValid()) {
            fRenderPass = fGpu->resourceProvider().findRenderPass(rpHandle,
                                                                  vkColorOps,
                                                                  vkStencilOps);
        } else {
            fRenderPass = fGpu->resourceProvider().findRenderPass(*vkRT,
                                                                  vkColorOps,
                                                                  vkStencilOps);
        }

        SkASSERT(fRenderPass->isCompatible(*oldRP));
        oldRP->unref(fGpu);

        GrColorToRGBAFloat(color, fColorClearValue.color.float32);
        fStartsWithClear = true;
        return;
    }

    // We always do a sub rect clear with clearAttachments since we are inside a render pass
    VkClearRect clearRect;
    // Flip rect if necessary
    SkIRect vkRect;
    if (!clip.scissorEnabled()) {
        vkRect.setXYWH(0, 0, vkRT->width(), vkRT->height());
    } else if (kBottomLeft_GrSurfaceOrigin != vkRT->origin()) {
        vkRect = clip.scissorRect();
    } else {
        const SkIRect& scissor = clip.scissorRect();
        vkRect.setLTRB(scissor.fLeft, vkRT->height() - scissor.fBottom,
                       scissor.fRight, vkRT->height() - scissor.fTop);
    }
    clearRect.rect.offset = { vkRect.fLeft, vkRect.fTop };
    clearRect.rect.extent = { (uint32_t)vkRect.width(), (uint32_t)vkRect.height() };
    clearRect.baseArrayLayer = 0;
    clearRect.layerCount = 1;

    uint32_t colorIndex;
    SkAssertResult(fRenderPass->colorAttachmentIndex(&colorIndex));

    VkClearAttachment attachment;
    attachment.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
    attachment.colorAttachment = colorIndex;
    attachment.clearValue.color = vkColor;

    fCommandBuffer->clearAttachments(fGpu, 1, &attachment, 1, &clearRect);
    fIsEmpty = false;
    return;
}

//.........这里部分代码省略.........
    targetImage->setImageLayout(gpu,
                                VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
                                dstAccessFlags,
                                VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
                                false);

    srcTex->setImageLayout(gpu,
                           VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
                           VK_ACCESS_SHADER_READ_BIT,
                           VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
                           false);

    GrStencilAttachment* stencil = rt->renderTargetPriv().getStencilAttachment();
    if (stencil) {
        GrVkStencilAttachment* vkStencil = (GrVkStencilAttachment*)stencil;
        // We aren't actually using the stencil but we still load and store it so we need
        // appropriate barriers.
        // TODO: Once we refactor surface and how we conntect stencil to RTs, we should not even
        // have the stencil on this render pass if possible.
        vkStencil->setImageLayout(gpu,
                                  VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
                                  VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
                                  VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT,
                                  VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT,
                                  false);
    }

    VkAttachmentLoadOp loadOp = canDiscardOutsideDstRect ? VK_ATTACHMENT_LOAD_OP_DONT_CARE
                                                         : VK_ATTACHMENT_LOAD_OP_LOAD;
    GrVkRenderPass::LoadStoreOps vkColorOps(loadOp, VK_ATTACHMENT_STORE_OP_STORE);
    GrVkRenderPass::LoadStoreOps vkStencilOps(VK_ATTACHMENT_LOAD_OP_LOAD,
                                              VK_ATTACHMENT_STORE_OP_STORE);
    const GrVkRenderPass* renderPass;
    const GrVkResourceProvider::CompatibleRPHandle& rpHandle = rt->compatibleRenderPassHandle();
    if (rpHandle.isValid()) {
        renderPass = gpu->resourceProvider().findRenderPass(rpHandle,
                                                            vkColorOps,
                                                            vkStencilOps);
    } else {
        renderPass = gpu->resourceProvider().findRenderPass(*rt,
                                                            vkColorOps,
                                                            vkStencilOps);
    }

    SkASSERT(renderPass->isCompatible(*rt->simpleRenderPass()));

    GrVkPrimaryCommandBuffer* cmdBuffer = gpu->currentCommandBuffer();
    cmdBuffer->beginRenderPass(gpu, renderPass, nullptr, *rt, bounds, true);

    GrVkSecondaryCommandBuffer* secondary = gpu->cmdPool()->findOrCreateSecondaryCommandBuffer(gpu);
    if (!secondary) {
        return false;
    }
    secondary->begin(gpu, rt->framebuffer(), renderPass);

    secondary->bindPipeline(gpu, pipeline);

    // Uniform DescriptorSet, Sampler DescriptorSet, and vertex shader uniformBuffer
    SkSTArray<3, const GrVkRecycledResource*> descriptorRecycledResources;
    descriptorRecycledResources.push_back(uniformDS);
    descriptorRecycledResources.push_back(samplerDS);
    descriptorRecycledResources.push_back(fUniformBuffer->resource());

    // One sampler, texture view, and texture
    SkSTArray<3, const GrVkResource*> descriptorResources;
    descriptorResources.push_back(sampler);