本文整理汇总了C++中WebGLTexture::ImageInfoAt方法的典型用法代码示例。如果您正苦于以下问题：C++ WebGLTexture::ImageInfoAt方法的具体用法？C++ WebGLTexture::ImageInfoAt怎么用？C++ WebGLTexture::ImageInfoAt使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类WebGLTexture的用法示例。
在下文中一共展示了WebGLTexture::ImageInfoAt方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: ErrorInvalidValue
void
WebGL2Context::TexSubImage3D(GLenum rawTarget, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type, const Nullable<dom::ArrayBufferView>& pixels,
ErrorResult& rv)
{
if (IsContextLost())
return;
if (pixels.IsNull())
return ErrorInvalidValue("texSubImage3D: pixels must not be null!");
const ArrayBufferView& view = pixels.Value();
view.ComputeLengthAndData();
const WebGLTexImageFunc func = WebGLTexImageFunc::TexSubImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex3D;
if (!ValidateTexImageTarget(rawTarget, func, dims))
return;
TexImageTarget texImageTarget(rawTarget);
WebGLTexture* tex = activeBoundTextureForTexImageTarget(texImageTarget);
if (!tex) {
return ErrorInvalidOperation("texSubImage3D: no texture bound on active texture unit");
}
if (!tex->HasImageInfoAt(texImageTarget, level)) {
return ErrorInvalidOperation("texSubImage3D: no previously defined texture image");
}
const WebGLTexture::ImageInfo& imageInfo = tex->ImageInfoAt(texImageTarget, level);
const TexInternalFormat existingEffectiveInternalFormat = imageInfo.EffectiveInternalFormat();
TexInternalFormat existingUnsizedInternalFormat = LOCAL_GL_NONE;
TexType existingType = LOCAL_GL_NONE;
UnsizedInternalFormatAndTypeFromEffectiveInternalFormat(existingEffectiveInternalFormat,
&existingUnsizedInternalFormat,
&existingType);
if (!ValidateTexImage(texImageTarget, level, existingEffectiveInternalFormat.get(),
xoffset, yoffset, zoffset,
width, height, depth,
0, format, type, func, dims))
{
return;
}
if (type != existingType) {
return ErrorInvalidOperation("texSubImage3D: type differs from that of the existing image");
}
js::Scalar::Type jsArrayType = JS_GetArrayBufferViewType(view.Obj());
void* data = view.Data();
size_t dataLength = view.Length();
if (!ValidateTexInputData(type, jsArrayType, func, dims))
return;
const size_t bitsPerTexel = GetBitsPerTexel(existingEffectiveInternalFormat);
MOZ_ASSERT((bitsPerTexel % 8) == 0); // should not have compressed formats here.
size_t srcTexelSize = bitsPerTexel / 8;
if (width == 0 || height == 0 || depth == 0)
return; // no effect, we better return right now
CheckedUint32 checked_neededByteLength =
GetImageSize(height, width, depth, srcTexelSize, mPixelStoreUnpackAlignment);
if (!checked_neededByteLength.isValid())
return ErrorInvalidOperation("texSubImage2D: integer overflow computing the needed buffer size");
uint32_t bytesNeeded = checked_neededByteLength.value();
if (dataLength < bytesNeeded)
return ErrorInvalidOperation("texSubImage2D: not enough data for operation (need %d, have %d)", bytesNeeded, dataLength);
if (imageInfo.HasUninitializedImageData()) {
bool coversWholeImage = xoffset == 0 &&
yoffset == 0 &&
zoffset == 0 &&
width == imageInfo.Width() &&
height == imageInfo.Height() &&
depth == imageInfo.Depth();
if (coversWholeImage) {
tex->SetImageDataStatus(texImageTarget, level, WebGLImageDataStatus::InitializedImageData);
} else {
tex->EnsureNoUninitializedImageData(texImageTarget, level);
}
}
GLenum driverType = LOCAL_GL_NONE;
GLenum driverInternalFormat = LOCAL_GL_NONE;
GLenum driverFormat = LOCAL_GL_NONE;
DriverFormatsFromEffectiveInternalFormat(gl,
existingEffectiveInternalFormat,
&driverInternalFormat,
&driverFormat,
&driverType);
//.........这里部分代码省略.........