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[d3d11] Fix behaviour with a viewport count of zero

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Philip Rebohle 2019-06-13 02:21:10 +02:00
parent 5ff9c33855
commit 6a76577f15
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1 changed files with 13 additions and 8 deletions
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17
src/d3d11/d3d11_context.cpp
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@ -3096,14 +3096,19 @@ namespace dxvk {
void D3D11DeviceContext::ApplyViewportState() {
// We cannot set less than one viewport in Vulkan, and
// rendering with no active viewport is illegal anyway.
if (m_state.rs.numViewports == 0)
return;
std::array<VkViewport, D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE> viewports;
std::array<VkRect2D, D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE> scissors;
// The backend can't handle a viewport count of zero,
// so we should at least specify one empty viewport
uint32_t viewportCount = m_state.rs.numViewports;
if (unlikely(!viewportCount)) {
viewportCount = 1;
viewports[0] = VkViewport();
scissors [0] = VkRect2D();
}
// D3D11's coordinate system has its origin in the bottom left,
// but the viewport coordinates are aligned to the top-left
// corner so we can get away with flipping the viewport.
@ -3159,7 +3164,7 @@ namespace dxvk {
}
EmitCs([
cViewportCount = m_state.rs.numViewports,
cViewportCount = viewportCount,
cViewports = viewports,
cScissors = scissors
] (DxvkContext* ctx) {