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Limit Clear Color Values to 2^24 For Integer Formats

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Adds validation to ensure clear colors do not exceed 2^24 and a
corresponding unit test. Also removes intermediate float conversions
that are no longer necessary.

Bug: dawn:525
Change-Id: I020b98de85384c20da51158de79eab87f60dcf6d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/29040
Commit-Queue: Brandon Jones <brandon1.jones@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
This commit is contained in:
Brandon Jones
2020-10-01 19:56:49 +00:00
committed by Commit Bot service account
parent da5828c06b
commit 16ebcf601d
8 changed files with 150 additions and 55 deletions
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88
src/tests/unittests/validation/RenderPassDescriptorValidationTests.cpp
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@@ -762,6 +762,94 @@ namespace {
}
}
// Tests that values that require more than 24 bits to express are not allowed for integer
// formats.
TEST_F(RenderPassDescriptorValidationTest, ExceedValidColorClearRange) {
std::array<wgpu::TextureFormat, 2> formats = {wgpu::TextureFormat::RGBA32Sint,
wgpu::TextureFormat::RGBA32Uint};
constexpr double k2toThe24 = 16777216.0;
double kLargerThan2toPower24 = nextafter(k2toThe24, k2toThe24 + 1);
for (wgpu::TextureFormat format : formats) {
wgpu::TextureView color = Create2DAttachment(device, 1, 1, format);
// Tests that 16777216.0 is a valid clear color.
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.r = k2toThe24;
renderPass.cColorAttachments[0].clearColor.g = k2toThe24;
renderPass.cColorAttachments[0].clearColor.b = k2toThe24;
renderPass.cColorAttachments[0].clearColor.a = k2toThe24;
AssertBeginRenderPassSuccess(&renderPass);
}
// Tests that 16777216.01 cannot be used as a clear color.
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.r = kLargerThan2toPower24;
AssertBeginRenderPassError(&renderPass);
}
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.g = kLargerThan2toPower24;
AssertBeginRenderPassError(&renderPass);
}
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.b = kLargerThan2toPower24;
AssertBeginRenderPassError(&renderPass);
}
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.a = kLargerThan2toPower24;
AssertBeginRenderPassError(&renderPass);
}
// Tests that -16777216.0 is a valid clear color for Sint, but not for Uint
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.r = -k2toThe24;
renderPass.cColorAttachments[0].clearColor.g = -k2toThe24;
renderPass.cColorAttachments[0].clearColor.b = -k2toThe24;
renderPass.cColorAttachments[0].clearColor.a = -k2toThe24;
if (format == wgpu::TextureFormat::RGBA32Sint) {
AssertBeginRenderPassSuccess(&renderPass);
} else if (format == wgpu::TextureFormat::RGBA32Uint) {
AssertBeginRenderPassError(&renderPass);
}
}
// Tests that -16777216.01 cannot be used as a clear color.
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.r = -kLargerThan2toPower24;
AssertBeginRenderPassError(&renderPass);
}
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.g = -kLargerThan2toPower24;
AssertBeginRenderPassError(&renderPass);
}
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.b = -kLargerThan2toPower24;
AssertBeginRenderPassError(&renderPass);
}
{
utils::ComboRenderPassDescriptor renderPass({color}, nullptr);
renderPass.cColorAttachments[0].clearColor.a = -kLargerThan2toPower24;
AssertBeginRenderPassError(&renderPass);
}
}
}
TEST_F(RenderPassDescriptorValidationTest, ValidateDepthStencilReadOnly) {
wgpu::TextureView colorView =
Create2DAttachment(device, 1, 1, wgpu::TextureFormat::RGBA8Unorm);