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Fix validation of mip map level 

Mip map level starts with the size of texture image and halves the
size until a 1x1 dimension.

BUG=chromium:954769

Change-Id: I59e51af216d65c721a3d2c2023306883e524820d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/7000
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Yizhou Jiang <yizhou.jiang@intel.com>
This commit is contained in:
Yizhou Jiang 2019-05-06 01:53:16 +00:00 committed by Commit Bot service account
parent f8a1041e99
commit 8804bc541e
2 changed files with 19 additions and 6 deletions
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6
src/dawn_native/Texture.cpp
View File

@ -14,6 +14,8 @@
#include "dawn_native/Texture.h"
#include <algorithm>
#include "common/Assert.h"
#include "common/Math.h"
#include "dawn_native/Device.h"
@ -174,8 +176,8 @@ namespace dawn_native {
return DAWN_VALIDATION_ERROR("Cannot create an empty texture");
}
if (Log2(descriptor->size.width) + 1 < descriptor->mipLevelCount ||
Log2(descriptor->size.height) + 1 < descriptor->mipLevelCount) {
if (Log2(std::max(descriptor->size.width, descriptor->size.height)) + 1 <
descriptor->mipLevelCount) {
return DAWN_VALIDATION_ERROR("Texture has too many mip levels");
}

19
src/tests/unittests/validation/TextureValidationTests.cpp
View File

@ -135,8 +135,8 @@ TEST_F(TextureValidationTest, MipLevelCount) {
dawn::TextureDescriptor descriptor = defaultDescriptor;
descriptor.size.width = 31;
descriptor.size.height = 32;
// Mip level width: 31, 15, 7, 3, 1
descriptor.mipLevelCount = 6;
// Mip level width: 31, 15, 7, 3, 1, 1
descriptor.mipLevelCount = 7;
ASSERT_DEVICE_ERROR(device.CreateTexture(&descriptor));
}
@ -146,8 +146,8 @@ TEST_F(TextureValidationTest, MipLevelCount) {
dawn::TextureDescriptor descriptor = defaultDescriptor;
descriptor.size.width = 32;
descriptor.size.height = 31;
// Mip level height: 31, 15, 7, 3, 1
descriptor.mipLevelCount = 6;
// Mip level height: 31, 15, 7, 3, 1, 1
descriptor.mipLevelCount = 7;
ASSERT_DEVICE_ERROR(device.CreateTexture(&descriptor));
}
@ -161,6 +161,17 @@ TEST_F(TextureValidationTest, MipLevelCount) {
ASSERT_DEVICE_ERROR(device.CreateTexture(&descriptor));
}
// Non square mip map halves the resolution until a 1x1 dimension.
{
dawn::TextureDescriptor descriptor = defaultDescriptor;
descriptor.size.width = 32;
descriptor.size.height = 8;
// Mip maps: 32 * 8, 16 * 4, 8 * 2, 4 * 1, 2 * 1, 1 * 1
descriptor.mipLevelCount = 6;
device.CreateTexture(&descriptor);
}
}
// Test that it is valid to destroy a texture