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RenderPassLoadOpTests.ClearsOnlyOnFirstUsePerRenderPass (#117) 

Tests that an attachment is cleared only on the first subpass that uses
it in a renderpass
This commit is contained in:
Kai Ninomiya 2017-08-15 13:58:48 -07:00 committed by GitHub
parent afa45a9176
commit b476abd915
1 changed files with 48 additions and 2 deletions
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50
src/tests/end2end/RenderPassLoadOpTests.cpp
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@ -168,11 +168,11 @@ TEST_P(RenderPassLoadOpTests, ColorClearThenLoadAndDraw) {
auto builder = device.CreateCommandBufferBuilder()
.BeginRenderPass(renderpass2, framebuffer2)
.BeginRenderSubpass()
// Clear should occur implicitly
// Clear should occur implicitly
.Clone();
blueQuad.Draw(renderpass2, &builder);
commands2 = builder
// Store should occur implicitly
// Store should occur implicitly
.EndRenderSubpass()
.EndRenderPass()
.GetResult();
@ -185,4 +185,50 @@ TEST_P(RenderPassLoadOpTests, ColorClearThenLoadAndDraw) {
EXPECT_TEXTURE_RGBA8_EQ(expectBlue.data(), renderTarget, kRTSize / 2, 0, kRTSize / 2, kRTSize, 0);
}
// Tests that an attachment is cleared only on the first subpass that uses it in a renderpass
TEST_P(RenderPassLoadOpTests, ClearsOnlyOnFirstUsePerRenderPass) {
if (IsOpenGL()) {
// TODO(kainino@chromium.org): currently fails on OpenGL backend
return;
}
auto renderpass = device.CreateRenderPassBuilder()
.SetAttachmentCount(1)
.SetSubpassCount(2)
.AttachmentSetFormat(0, nxt::TextureFormat::R8G8B8A8Unorm)
.AttachmentSetColorLoadOp(0, nxt::LoadOp::Clear)
.SubpassSetColorAttachment(0, 0, 0)
.SubpassSetColorAttachment(1, 0, 0)
.GetResult();
auto framebuffer = device.CreateFramebufferBuilder()
.SetRenderPass(renderpass)
.SetDimensions(kRTSize, kRTSize)
.SetAttachment(0, renderTargetView)
.GetResult();
nxt::CommandBuffer commands;
auto builder = device.CreateCommandBufferBuilder()
.BeginRenderPass(renderpass, framebuffer)
.BeginRenderSubpass()
// Clear should occur implicitly
.Clone();
blueQuad.Draw(renderpass, &builder);
commands = builder
// Store should occur implicitly
.EndRenderSubpass()
.BeginRenderSubpass()
// Load (not clear!) should occur implicitly
// Store should occur implicitly
.EndRenderSubpass()
.EndRenderPass()
.GetResult();
framebuffer.AttachmentSetClearColor(0, 0.0f, 1.0f, 0.0f, 1.0f); // green
queue.Submit(1, &commands);
// Left half should still be green from the first clear
EXPECT_TEXTURE_RGBA8_EQ(expectGreen.data(), renderTarget, 0, 0, kRTSize / 2, kRTSize, 0);
// Right half should be blue, not cleared by the second subpass
EXPECT_TEXTURE_RGBA8_EQ(expectBlue.data(), renderTarget, kRTSize / 2, 0, kRTSize / 2, kRTSize, 0);
}
NXT_INSTANTIATE_TEST(RenderPassLoadOpTests, D3D12Backend, MetalBackend, OpenGLBackend)