bool
WebGLTexture::EnsureLevelInitialized(const char* funcName, uint32_t level)
{
if (mTarget != LOCAL_GL_TEXTURE_CUBE_MAP)
return EnsureImageDataInitialized(funcName, mTarget.get(), level);
for (GLenum texImageTarget = LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X;
texImageTarget <= LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
++texImageTarget)
{
if (!EnsureImageDataInitialized(funcName, texImageTarget, level))
return false;
}
return true;
}
bool
WebGLTexture::GetFakeBlackType(const char* funcName, uint32_t texUnit,
FakeBlackType* const out_fakeBlack)
{
const char* incompleteReason;
if (!IsComplete(texUnit, &incompleteReason)) {
if (incompleteReason) {
mContext->GenerateWarning("%s: Active texture %u for target 0x%04x is"
" 'incomplete', and will be rendered as"
" RGBA(0,0,0,1), as per the GLES 2.0.24 $3.8.2: %s",
funcName, texUnit, mTarget.get(),
incompleteReason);
}
*out_fakeBlack = FakeBlackType::RGBA0001;
return true;
}
// We may still want FakeBlack as an optimization for uninitialized image data.
bool hasUninitializedData = false;
bool hasInitializedData = false;
const auto maxLevel = MaxEffectiveMipmapLevel(texUnit);
MOZ_ASSERT(mBaseMipmapLevel <= maxLevel);
for (uint32_t level = mBaseMipmapLevel; level <= maxLevel; level++) {
for (uint8_t face = 0; face < mFaceCount; face++) {
const auto& cur = ImageInfoAtFace(face, level);
if (cur.IsDataInitialized())
hasInitializedData = true;
else
hasUninitializedData = true;
}
}
MOZ_ASSERT(hasUninitializedData || hasInitializedData);
if (!hasUninitializedData) {
*out_fakeBlack = FakeBlackType::None;
return true;
}
if (!hasInitializedData) {
const auto format = ImageInfoAtFace(0, mBaseMipmapLevel).mFormat->format;
if (format->isColorFormat) {
*out_fakeBlack = (format->hasAlpha ? FakeBlackType::RGBA0000
: FakeBlackType::RGBA0001);
return true;
}
mContext->GenerateWarning("%s: Active texture %u for target 0x%04x is"
" uninitialized, and will be (perhaps slowly) cleared"
" by the implementation.",
funcName, texUnit, mTarget.get());
} else {
mContext->GenerateWarning("%s: Active texture %u for target 0x%04x contains"
" TexImages with uninitialized data along with"
" TexImages with initialized data, forcing the"
" implementation to (slowly) initialize the"
" uninitialized TexImages.",
funcName, texUnit, mTarget.get());
}
GLenum baseImageTarget = mTarget.get();
if (baseImageTarget == LOCAL_GL_TEXTURE_CUBE_MAP)
baseImageTarget = LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X;
for (uint32_t level = mBaseMipmapLevel; level <= maxLevel; level++) {
for (uint8_t face = 0; face < mFaceCount; face++) {
TexImageTarget imageTarget = baseImageTarget + face;
if (!EnsureImageDataInitialized(funcName, imageTarget, level))
return false; // The world just exploded.
}
}
*out_fakeBlack = FakeBlackType::None;
return true;
}
