void set_dynamic_scissor_state(GrVkGpu* gpu,
GrVkCommandBuffer* cmdBuffer,
const GrPipeline& pipeline,
const GrRenderTarget& target) {
// We always use one scissor and if it is disabled we just make it the size of the RT
const GrScissorState& scissorState = pipeline.getScissorState();
VkRect2D scissor;
if (scissorState.enabled() &&
!scissorState.rect().contains(0, 0, target.width(), target.height())) {
// This all assumes the scissorState has previously been clipped to the device space render
// target.
scissor.offset.x = scissorState.rect().fLeft;
scissor.extent.width = scissorState.rect().width();
if (kTopLeft_GrSurfaceOrigin == target.origin()) {
scissor.offset.y = scissorState.rect().fTop;
} else {
SkASSERT(kBottomLeft_GrSurfaceOrigin == target.origin());
scissor.offset.y = target.height() - scissorState.rect().fBottom;
}
scissor.extent.height = scissorState.rect().height();
SkASSERT(scissor.offset.x >= 0);
SkASSERT(scissor.offset.x + scissor.extent.width <= (uint32_t)target.width());
SkASSERT(scissor.offset.y >= 0);
SkASSERT(scissor.offset.y + scissor.extent.height <= (uint32_t)target.height());
} else {
scissor.extent.width = target.width();
scissor.extent.height = target.height();
scissor.offset.x = 0;
scissor.offset.y = 0;
}
cmdBuffer->setScissor(gpu, 0, 1, &scissor);
}
void setup_viewport_scissor_state(const GrVkGpu* gpu,
const GrPipeline& pipeline,
const GrVkRenderTarget* vkRT,
VkPipelineViewportStateCreateInfo* viewportInfo,
VkViewport* viewport,
VkRect2D* scissor) {
memset(viewportInfo, 0, sizeof(VkPipelineViewportStateCreateInfo));
viewportInfo->sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewportInfo->pNext = nullptr;
viewportInfo->flags = 0;
viewport->x = 0.0f;
viewport->y = 0.0f;
viewport->width = SkIntToScalar(vkRT->width());
viewport->height = SkIntToScalar(vkRT->height());
viewport->minDepth = 0.0f;
viewport->maxDepth = 1.0f;
viewportInfo->viewportCount = 1;
viewportInfo->pViewports = viewport;
const GrScissorState& scissorState = pipeline.getScissorState();
if (scissorState.enabled() &&
!scissorState.rect().contains(0, 0, vkRT->width(), vkRT->height())) {
// This all assumes the scissorState has previously been clipped to the device space render
// target.
scissor->offset.x = scissorState.rect().fLeft;
scissor->extent.width = scissorState.rect().width();
if (kTopLeft_GrSurfaceOrigin == vkRT->origin()) {
scissor->offset.y = scissorState.rect().fTop;
} else {
SkASSERT(kBottomLeft_GrSurfaceOrigin == vkRT->origin());
scissor->offset.y = vkRT->height() - scissorState.rect().fBottom;
}
scissor->extent.height = scissorState.rect().height();
viewportInfo->scissorCount = 1;
viewportInfo->pScissors = scissor;
SkASSERT(scissor->offset.x >= 0);
SkASSERT(scissor->offset.x + scissor->extent.width <= (uint32_t)vkRT->width());
SkASSERT(scissor->offset.y >= 0);
SkASSERT(scissor->offset.y + scissor->extent.height <= (uint32_t)vkRT->height());
} else {
scissor->extent.width = vkRT->width();
scissor->extent.height = vkRT->height();
scissor->offset.x = 0;
scissor->offset.y = 0;
viewportInfo->scissorCount = 1;
viewportInfo->pScissors = scissor;
}
SkASSERT(viewportInfo->viewportCount == viewportInfo->scissorCount);
}
