void GrVkGpuCommandBuffer::onClearStencilClip(GrRenderTarget* target,
const GrFixedClip& clip,
bool insideStencilMask) {
SkASSERT(target);
SkASSERT(!clip.hasWindowRectangles());
GrVkRenderTarget* vkRT = static_cast<GrVkRenderTarget*>(target);
GrStencilAttachment* sb = target->renderTargetPriv().getStencilAttachment();
// this should only be called internally when we know we have a
// stencil buffer.
SkASSERT(sb);
int stencilBitCount = sb->bits();
// The contract with the callers does not guarantee that we preserve all bits in the stencil
// during this clear. Thus we will clear the entire stencil to the desired value.
VkClearDepthStencilValue vkStencilColor;
memset(&vkStencilColor, 0, sizeof(VkClearDepthStencilValue));
if (insideStencilMask) {
vkStencilColor.stencil = (1 << (stencilBitCount - 1));
} else {
vkStencilColor.stencil = 0;
}
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 stencilIndex;
SkAssertResult(fRenderPass->stencilAttachmentIndex(&stencilIndex));
VkClearAttachment attachment;
attachment.aspectMask = VK_IMAGE_ASPECT_STENCIL_BIT;
attachment.colorAttachment = 0; // this value shouldn't matter
attachment.clearValue.depthStencil = vkStencilColor;
fCommandBuffer->clearAttachments(fGpu, 1, &attachment, 1, &clearRect);
fIsEmpty = false;
}
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;
}