bool WebGLTexture::IsMipAndCubeComplete(const uint32_t maxLevel,
const bool ensureInit,
bool* const out_initFailed) const {
*out_initFailed = false;
// Reference dimensions based on baseLevel.
auto ref = BaseImageInfo();
MOZ_ASSERT(ref.mWidth && ref.mHeight && ref.mDepth);
for (auto level = mBaseMipmapLevel; level <= maxLevel; ++level) {
// GLES 3.0.4, p161
// "A cube map texture is mipmap complete if each of the six texture images,
// considered individually, is mipmap complete."
for (uint8_t face = 0; face < mFaceCount; face++) {
auto& cur = ImageInfoAtFace(face, level);
// "* The set of mipmap arrays `level_base` through `q` (where `q`
// is defined the "Mipmapping" discussion of section 3.8.10) were
// each specified with the same effective internal format."
// "* The dimensions of the arrays follow the sequence described in
// the "Mipmapping" discussion of section 3.8.10."
if (cur.mWidth != ref.mWidth || cur.mHeight != ref.mHeight ||
cur.mDepth != ref.mDepth || cur.mFormat != ref.mFormat) {
return false;
}
if (MOZ_UNLIKELY(ensureInit && !cur.mHasData)) {
auto imageTarget = mTarget.get();
if (imageTarget == LOCAL_GL_TEXTURE_CUBE_MAP) {
imageTarget = LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X + face;
}
if (!ZeroTextureData(mContext, mGLName, imageTarget, level, cur.mFormat,
cur.mWidth, cur.mHeight, cur.mDepth)) {
mContext->ErrorOutOfMemory("Failed to zero tex image data.");
*out_initFailed = true;
return false;
}
cur.mHasData = true;
}
}
const auto next = ref.NextMip(mTarget.get());
if (!next) break;
ref = next.ref();
}
return true;
}
bool WebGLTexture::EnsureImageDataInitialized(const TexImageTarget target,
const uint32_t level) {
auto& imageInfo = ImageInfoAt(target, level);
if (!imageInfo.IsDefined()) return true;
if (imageInfo.mHasData) return true;
if (!ZeroTextureData(mContext, mGLName, target, level, imageInfo.mFormat,
imageInfo.mWidth, imageInfo.mHeight, imageInfo.mDepth)) {
return false;
}
imageInfo.mHasData = true;
return true;
}
bool
WebGLTexture::InitializeImageData(const char* funcName, TexImageTarget target,
uint32_t level)
{
auto& imageInfo = ImageInfoAt(target, level);
MOZ_ASSERT(imageInfo.IsDefined());
MOZ_ASSERT(!imageInfo.IsDataInitialized());
const auto& usage = imageInfo.mFormat;
const auto& width = imageInfo.mWidth;
const auto& height = imageInfo.mHeight;
const auto& depth = imageInfo.mDepth;
if (!ZeroTextureData(mContext, funcName, mGLName, target, level, usage, 0, 0, 0,
width, height, depth))
{
return false;
}
imageInfo.SetIsDataInitialized(true, this);
return true;
}
