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Bug 749711 - Lots of WebGL texture conversion fixes and improvements - r=jgilbert 

* Templatize pack/unpack routines
** Inside anonymous namespace in a naive attempt to not hammer PGO linker
   memory usage.
* Support conversions changing texel size
* Support conversion from integer to float formats
* Support RGBA32F properly
* Avoid compiling useless paths (code size down to 17k from 44k)
This commit is contained in:
Benoit Jacob 2012-05-07 13:05:32 -04:00
Родитель e917642408
Коммит 9f596da823
5 изменённых файлов: 991 добавлений и 527 удалений
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1
content/canvas/src/Makefile.in
Просмотреть файл

@ -82,6 +82,7 @@ CPPSRCS += \
WebGLExtensionStandardDerivatives.cpp \
WebGLExtensionTextureFilterAnisotropic.cpp \
WebGLExtensionLoseContext.cpp \
WebGLTexelConversions.cpp \
$(NULL)
DEFINES += -DUSE_ANGLE

59
content/canvas/src/WebGLContext.h
Просмотреть файл

@ -128,16 +128,51 @@ struct BackbufferClearingStatus {
enum { NotClearedSinceLastPresented, ClearedToDefaultValues, HasBeenDrawnTo };
};
struct WebGLTexelFormat {
enum { Generic, Auto, RGBA8, RGB8, RGBX8, BGRA8, BGR8, BGRX8, RGBA5551, RGBA4444, RGB565, R8, RA8, A8,
RGBA32F, RGB32F, A32F, R32F, RA32F };
namespace WebGLTexelConversions {
/*
* The formats that may participate, either as source or destination formats,
* in WebGL texture conversions. This includes:
* - all the formats accepted by WebGL.texImage2D, e.g. RGBA4444
* - additional formats provided by extensions, e.g. RGB32F
* - additional source formats, depending on browser details, used when uploading
* textures from DOM elements. See gfxImageSurface::Format().
*/
enum WebGLTexelFormat
{
// dummy error code returned by GetWebGLTexelFormat in error cases,
// after assertion failure (so this never happens in debug builds)
BadFormat,
// dummy pseudo-format meaning "use the other format".
// For example, if SrcFormat=Auto and DstFormat=RGB8, then the source
// is implicitly treated as being RGB8 itself.
Auto,
// 1-channel formats
R8,
A8,
R32F, // used for OES_texture_float extension
A32F, // used for OES_texture_float extension
// 2-channel formats
RA8,
RA32F,
// 3-channel formats
RGB8,
BGRX8, // used for DOM elements. Source format only.
RGB565,
RGB32F, // used for OES_texture_float extension
// 4-channel formats
RGBA8,
BGRA8, // used for DOM elements
RGBA5551,
RGBA4444,
RGBA32F // used for OES_texture_float extension
};
struct WebGLTexelPremultiplicationOp {
enum { Generic, None, Premultiply, Unmultiply };
};
} // end namespace WebGLTexelConversions
int GetWebGLTexelFormat(GLenum format, GLenum type);
using WebGLTexelConversions::WebGLTexelFormat;
WebGLTexelFormat GetWebGLTexelFormat(GLenum format, GLenum type);
// Zero is not an integer power of two.
inline bool is_pot_assuming_nonnegative(WebGLsizei x)
@ -1205,26 +1240,26 @@ protected:
WebGLenum format, WebGLenum type,
void *data, PRUint32 byteLength,
int jsArrayType,
int srcFormat, bool srcPremultiplied);
WebGLTexelFormat srcFormat, bool srcPremultiplied);
void TexSubImage2D_base(WebGLenum target, WebGLint level,
WebGLint xoffset, WebGLint yoffset,
WebGLsizei width, WebGLsizei height, WebGLsizei srcStrideOrZero,
WebGLenum format, WebGLenum type,
void *pixels, PRUint32 byteLength,
int jsArrayType,
int srcFormat, bool srcPremultiplied);
WebGLTexelFormat srcFormat, bool srcPremultiplied);
void TexParameter_base(WebGLenum target, WebGLenum pname,
WebGLint *intParamPtr, WebGLfloat *floatParamPtr);
void ConvertImage(size_t width, size_t height, size_t srcStride, size_t dstStride,
const PRUint8*src, PRUint8 *dst,
int srcFormat, bool srcPremultiplied,
int dstFormat, bool dstPremultiplied,
WebGLTexelFormat srcFormat, bool srcPremultiplied,
WebGLTexelFormat dstFormat, bool dstPremultiplied,
size_t dstTexelSize);
nsresult DOMElementToImageSurface(dom::Element* imageOrCanvas,
gfxImageSurface **imageOut,
int *format);
WebGLTexelFormat *format);
void CopyTexSubImage2D_base(WebGLenum target,
WebGLint level,

305
content/canvas/src/WebGLContextGL.cpp
Просмотреть файл

@ -4296,198 +4296,9 @@ WebGLContext::StencilOpSeparate(WebGLenum face, WebGLenum sfail, WebGLenum dpfai
gl->fStencilOpSeparate(face, sfail, dpfail, dppass);
}
struct WebGLImageConverter
{
bool flip;
size_t width, height, srcStride, dstStride, srcTexelSize, dstTexelSize;
const PRUint8 *src;
PRUint8 *dst;
WebGLImageConverter()
{
memset(this, 0, sizeof(WebGLImageConverter));
}
template<typename SrcType, typename DstType, typename UnpackType,
void unpackingFunc(const SrcType*, UnpackType*),
void packingFunc(const UnpackType*, DstType*)>
void run()
{
// Note -- even though the functions take UnpackType, the
// pointers below are all in terms of PRUint8; otherwise
// pointer math starts getting tricky.
for (size_t src_row = 0; src_row < height; ++src_row) {
size_t dst_row = flip ? (height - 1 - src_row) : src_row;
PRUint8 *dst_row_ptr = dst + dst_row * dstStride;
const PRUint8 *src_row_ptr = src + src_row * srcStride;
const PRUint8 *src_row_end = src_row_ptr + width * srcTexelSize; // != src_row_ptr + byteStride
while (src_row_ptr != src_row_end) {
UnpackType tmp[4];
unpackingFunc(reinterpret_cast<const SrcType*>(src_row_ptr), tmp);
packingFunc(tmp, reinterpret_cast<DstType*>(dst_row_ptr));
src_row_ptr += srcTexelSize;
dst_row_ptr += dstTexelSize;
}
}
}
};
void
WebGLContext::ConvertImage(size_t width, size_t height, size_t srcStride, size_t dstStride,
const PRUint8*src, PRUint8 *dst,
int srcFormat, bool srcPremultiplied,
int dstFormat, bool dstPremultiplied,
size_t dstTexelSize)
{
if (width <= 0 || height <= 0)
return;
if (srcFormat == dstFormat &&
srcPremultiplied == dstPremultiplied)
{
// fast exit path: we just have to memcpy all the rows.
//
// The case where absolutely nothing needs to be done is supposed to have
// been handled earlier (in TexImage2D_base, etc).
//
// So the case we're handling here is when even though no format conversion is needed,
// we still might have to flip vertically and/or to adjust to a different stride.
NS_ASSERTION(mPixelStoreFlipY || srcStride != dstStride, "Performance trap -- should handle this case earlier, to avoid memcpy");
size_t row_size = width * dstTexelSize; // doesn't matter, src and dst formats agree
const PRUint8* src_row = src;
const PRUint8* src_end = src + height * srcStride;
PRUint8* dst_row = mPixelStoreFlipY ? dst + (height-1) * dstStride : dst;
ptrdiff_t dstStrideSigned(dstStride);
ptrdiff_t dst_delta = mPixelStoreFlipY ? -dstStrideSigned : dstStrideSigned;
while(src_row != src_end) {
memcpy(dst_row, src_row, row_size);
src_row += srcStride;
dst_row += dst_delta;
}
return;
}
WebGLImageConverter converter;
converter.flip = mPixelStoreFlipY;
converter.width = width;
converter.height = height;
converter.srcStride = srcStride;
converter.dstStride = dstStride;
converter.dstTexelSize = dstTexelSize;
converter.src = src;
converter.dst = dst;
int premultiplicationOp = (!srcPremultiplied && dstPremultiplied) ? WebGLTexelPremultiplicationOp::Premultiply
: (srcPremultiplied && !dstPremultiplied) ? WebGLTexelPremultiplicationOp::Unmultiply
: WebGLTexelPremultiplicationOp::None;
#define HANDLE_DSTFORMAT(format, SrcType, DstType, unpackFunc, packFunc) \
case WebGLTexelFormat::format: \
switch (premultiplicationOp) { \
case WebGLTexelPremultiplicationOp::Premultiply: \
converter.run<SrcType, DstType, PRUint8, \
WebGLTexelConversions::unpackFunc, \
WebGLTexelConversions::packFunc##Premultiply>(); \
break; \
case WebGLTexelPremultiplicationOp::Unmultiply: \
converter.run<SrcType, DstType, PRUint8, \
WebGLTexelConversions::unpackFunc, \
WebGLTexelConversions::packFunc##Unmultiply>(); \
break; \
default: \
converter.run<SrcType, DstType, PRUint8, \
WebGLTexelConversions::unpackFunc, \
WebGLTexelConversions::packFunc>(); \
break; \
} \
break;
#define HANDLE_SRCFORMAT(format, size, SrcType, unpackFunc) \
case WebGLTexelFormat::format: \
converter.srcTexelSize = size; \
switch (dstFormat) { \
HANDLE_DSTFORMAT(RGBA8, SrcType, PRUint8, unpackFunc, packRGBA8ToRGBA8) \
HANDLE_DSTFORMAT(RGB8, SrcType, PRUint8, unpackFunc, packRGBA8ToRGB8) \
HANDLE_DSTFORMAT(R8, SrcType, PRUint8, unpackFunc, packRGBA8ToR8) \
HANDLE_DSTFORMAT(RA8, SrcType, PRUint8, unpackFunc, packRGBA8ToRA8) \
HANDLE_DSTFORMAT(RGBA5551, SrcType, PRUint16, unpackFunc, packRGBA8ToUnsignedShort5551) \
HANDLE_DSTFORMAT(RGBA4444, SrcType, PRUint16, unpackFunc, packRGBA8ToUnsignedShort4444) \
HANDLE_DSTFORMAT(RGB565, SrcType, PRUint16, unpackFunc, packRGBA8ToUnsignedShort565) \
/* A8 needs to be special-cased as it doesn't have color channels to premultiply */ \
case WebGLTexelFormat::A8: \
converter.run<SrcType, PRUint8, PRUint8, \
WebGLTexelConversions::unpackFunc, \
WebGLTexelConversions::packRGBA8ToA8>(); \
break; \
default: \
NS_ASSERTION(false, "Coding error?! Should never reach this point."); \
return; \
} \
break;
#define HANDLE_FLOAT_DSTFORMAT(format, unpackFunc, packFunc) \
case WebGLTexelFormat::format: \
switch (premultiplicationOp) { \
case WebGLTexelPremultiplicationOp::Premultiply: \
converter.run<float, float, float, \
WebGLTexelConversions::unpackFunc, \
WebGLTexelConversions::packFunc##Premultiply>(); \
break; \
case WebGLTexelPremultiplicationOp::Unmultiply: \
NS_ASSERTION(false, "Floating point can't be un-premultiplied -- we have no premultiplied source data!"); \
break; \
default: \
converter.run<float, float, float, \
WebGLTexelConversions::unpackFunc, \
WebGLTexelConversions::packFunc>(); \
break; \
} \
break;
#define HANDLE_FLOAT_SRCFORMAT(format, size, unpackFunc) \
case WebGLTexelFormat::format: \
converter.srcTexelSize = size; \
switch (dstFormat) { \
HANDLE_FLOAT_DSTFORMAT(RGB32F, unpackFunc, packRGBA32FToRGB32F) \
HANDLE_FLOAT_DSTFORMAT(A32F, unpackFunc, packRGBA32FToA32F) \
HANDLE_FLOAT_DSTFORMAT(R32F, unpackFunc, packRGBA32FToR32F) \
HANDLE_FLOAT_DSTFORMAT(RA32F, unpackFunc, packRGBA32FToRA32F) \
default: \
NS_ASSERTION(false, "Coding error?! Should never reach this point."); \
return; \
} \
break;
switch (srcFormat) {
HANDLE_SRCFORMAT(RGBA8, 4, PRUint8, unpackRGBA8ToRGBA8)
HANDLE_SRCFORMAT(RGBX8, 4, PRUint8, unpackRGB8ToRGBA8)
HANDLE_SRCFORMAT(RGB8, 3, PRUint8, unpackRGB8ToRGBA8)
HANDLE_SRCFORMAT(BGRA8, 4, PRUint8, unpackBGRA8ToRGBA8)
HANDLE_SRCFORMAT(BGRX8, 4, PRUint8, unpackBGR8ToRGBA8)
HANDLE_SRCFORMAT(BGR8, 3, PRUint8, unpackBGR8ToRGBA8)
HANDLE_SRCFORMAT(R8, 1, PRUint8, unpackR8ToRGBA8)
HANDLE_SRCFORMAT(A8, 1, PRUint8, unpackA8ToRGBA8)
HANDLE_SRCFORMAT(RA8, 2, PRUint8, unpackRA8ToRGBA8)
HANDLE_SRCFORMAT(RGBA5551, 2, PRUint16, unpackRGBA5551ToRGBA8)
HANDLE_SRCFORMAT(RGBA4444, 2, PRUint16, unpackRGBA4444ToRGBA8)
HANDLE_SRCFORMAT(RGB565, 2, PRUint16, unpackRGB565ToRGBA8)
HANDLE_FLOAT_SRCFORMAT(RGB32F, 12, unpackRGB32FToRGBA32F)
HANDLE_FLOAT_SRCFORMAT(RA32F, 8, unpackRA32FToRGBA32F)
HANDLE_FLOAT_SRCFORMAT(R32F, 4, unpackR32FToRGBA32F)
HANDLE_FLOAT_SRCFORMAT(A32F, 4, unpackA32FToRGBA32F)
default:
NS_ASSERTION(false, "Coding error?! Should never reach this point.");
return;
}
}
nsresult
WebGLContext::DOMElementToImageSurface(Element* imageOrCanvas,
gfxImageSurface **imageOut, int *format)
gfxImageSurface **imageOut, WebGLTexelFormat *format)
{
if (!imageOrCanvas) {
return NS_ERROR_FAILURE;
@ -4556,16 +4367,16 @@ WebGLContext::DOMElementToImageSurface(Element* imageOrCanvas,
switch (surf->Format()) {
case gfxASurface::ImageFormatARGB32:
*format = WebGLTexelFormat::BGRA8; // careful, our ARGB means BGRA
*format = WebGLTexelConversions::BGRA8; // careful, our ARGB means BGRA
break;
case gfxASurface::ImageFormatRGB24:
*format = WebGLTexelFormat::BGRX8; // careful, our RGB24 is not tightly packed. Whence BGRX8.
*format = WebGLTexelConversions::BGRX8; // careful, our RGB24 is not tightly packed. Whence BGRX8.
break;
case gfxASurface::ImageFormatA8:
*format = WebGLTexelFormat::A8;
*format = WebGLTexelConversions::A8;
break;
case gfxASurface::ImageFormatRGB16_565:
*format = WebGLTexelFormat::RGB565;
*format = WebGLTexelConversions::RGB565;
break;
default:
NS_ASSERTION(false, "Unsupported image format. Unimplemented.");
@ -5644,7 +5455,7 @@ WebGLContext::TexImage2D_base(WebGLenum target, WebGLint level, WebGLenum intern
WebGLenum format, WebGLenum type,
void *data, PRUint32 byteLength,
int jsArrayType, // a TypedArray format enum, or -1 if not relevant
int srcFormat, bool srcPremultiplied)
WebGLTexelFormat srcFormat, bool srcPremultiplied)
{
switch (target) {
case LOCAL_GL_TEXTURE_2D:
@ -5699,14 +5510,19 @@ WebGLContext::TexImage2D_base(WebGLenum target, WebGLint level, WebGLenum intern
if (border != 0)
return ErrorInvalidValue("TexImage2D: border must be 0");
PRUint32 texelSize = 0;
if (!ValidateTexFormatAndType(format, type, jsArrayType, &texelSize, "texImage2D"))
PRUint32 dstTexelSize = 0;
if (!ValidateTexFormatAndType(format, type, jsArrayType, &dstTexelSize, "texImage2D"))
return;
CheckedUint32 checked_neededByteLength =
GetImageSize(height, width, texelSize, mPixelStoreUnpackAlignment);
WebGLTexelFormat dstFormat = GetWebGLTexelFormat(format, type);
WebGLTexelFormat actualSrcFormat = srcFormat == WebGLTexelConversions::Auto ? dstFormat : srcFormat;
CheckedUint32 checked_plainRowSize = CheckedUint32(width) * texelSize;
PRUint32 srcTexelSize = WebGLTexelConversions::TexelBytesForFormat(actualSrcFormat);
CheckedUint32 checked_neededByteLength =
GetImageSize(height, width, srcTexelSize, mPixelStoreUnpackAlignment);
CheckedUint32 checked_plainRowSize = CheckedUint32(width) * srcTexelSize;
CheckedUint32 checked_alignedRowSize =
RoundedToNextMultipleOf(checked_plainRowSize.value(), mPixelStoreUnpackAlignment);
@ -5734,11 +5550,9 @@ WebGLContext::TexImage2D_base(WebGLenum target, WebGLint level, WebGLenum intern
GLenum error = LOCAL_GL_NO_ERROR;
if (byteLength) {
int dstFormat = GetWebGLTexelFormat(format, type);
int actualSrcFormat = srcFormat == WebGLTexelFormat::Auto ? dstFormat : srcFormat;
size_t srcStride = srcStrideOrZero ? srcStrideOrZero : checked_alignedRowSize.value();
size_t dstPlainRowSize = texelSize * width;
size_t dstPlainRowSize = dstTexelSize * width;
size_t unpackAlignment = mPixelStoreUnpackAlignment;
size_t dstStride = ((dstPlainRowSize + unpackAlignment-1) / unpackAlignment) * unpackAlignment;
@ -5753,11 +5567,12 @@ WebGLContext::TexImage2D_base(WebGLenum target, WebGLint level, WebGLenum intern
}
else
{
nsAutoArrayPtr<PRUint8> convertedData(new PRUint8[bytesNeeded]);
size_t convertedDataSize = height * dstStride;
nsAutoArrayPtr<PRUint8> convertedData(new PRUint8[convertedDataSize]);
ConvertImage(width, height, srcStride, dstStride,
(PRUint8*)data, convertedData,
actualSrcFormat, srcPremultiplied,
dstFormat, mPixelStorePremultiplyAlpha, texelSize);
dstFormat, mPixelStorePremultiplyAlpha, dstTexelSize);
error = CheckedTexImage2D(target, level, internalformat,
width, height, border, format, type, convertedData);
}
@ -5814,7 +5629,7 @@ WebGLContext::TexImage2D(JSContext* cx, WebGLenum target, WebGLint level,
pixels ? pixels->mData : 0,
pixels ? pixels->mLength : 0,
pixels ? (int)JS_GetTypedArrayType(pixels->mObj, cx) : -1,
WebGLTexelFormat::Auto, false);
WebGLTexelConversions::Auto, false);
}
NS_IMETHODIMP
@ -5832,7 +5647,7 @@ WebGLContext::TexImage2D_imageData(WebGLenum target, WebGLint level, WebGLenum i
pixels ? JS_GetArrayBufferViewData(pixels, cx) : 0,
pixels ? JS_GetArrayBufferViewByteLength(pixels, cx) : 0,
-1,
WebGLTexelFormat::RGBA8, false);
WebGLTexelConversions::RGBA8, false);
return NS_OK;
}
@ -5853,7 +5668,7 @@ WebGLContext::TexImage2D(JSContext* cx, WebGLenum target, WebGLint level,
return TexImage2D_base(target, level, internalformat, pixels->GetWidth(),
pixels->GetHeight(), 4*pixels->GetWidth(), 0,
format, type, arr.mData, arr.mLength, -1,
WebGLTexelFormat::RGBA8, false);
WebGLTexelConversions::RGBA8, false);
}
@ -5877,7 +5692,7 @@ WebGLContext::TexImage2D(JSContext* /* unused */, WebGLenum target,
nsRefPtr<gfxImageSurface> isurf;
int srcFormat;
WebGLTexelFormat srcFormat;
rv = DOMElementToImageSurface(elt, getter_AddRefs(isurf), &srcFormat);
if (rv.Failed())
return;
@ -5908,7 +5723,7 @@ WebGLContext::TexSubImage2D_base(WebGLenum target, WebGLint level,
WebGLenum format, WebGLenum type,
void *pixels, PRUint32 byteLength,
int jsArrayType,
int srcFormat, bool srcPremultiplied)
WebGLTexelFormat srcFormat, bool srcPremultiplied)
{
switch (target) {
case LOCAL_GL_TEXTURE_2D:
@ -5943,17 +5758,22 @@ WebGLContext::TexSubImage2D_base(WebGLenum target, WebGLint level,
return ErrorInvalidValue("texSubImage2D: with level > 0, width and height must be powers of two");
}
PRUint32 texelSize = 0;
if (!ValidateTexFormatAndType(format, type, jsArrayType, &texelSize, "texSubImage2D"))
PRUint32 dstTexelSize = 0;
if (!ValidateTexFormatAndType(format, type, jsArrayType, &dstTexelSize, "texSubImage2D"))
return;
WebGLTexelFormat dstFormat = GetWebGLTexelFormat(format, type);
WebGLTexelFormat actualSrcFormat = srcFormat == WebGLTexelConversions::Auto ? dstFormat : srcFormat;
PRUint32 srcTexelSize = WebGLTexelConversions::TexelBytesForFormat(actualSrcFormat);
if (width == 0 || height == 0)
return; // ES 2.0 says it has no effect, we better return right now
CheckedUint32 checked_neededByteLength =
GetImageSize(height, width, texelSize, mPixelStoreUnpackAlignment);
GetImageSize(height, width, srcTexelSize, mPixelStoreUnpackAlignment);
CheckedUint32 checked_plainRowSize = CheckedUint32(width) * texelSize;
CheckedUint32 checked_plainRowSize = CheckedUint32(width) * srcTexelSize;
CheckedUint32 checked_alignedRowSize =
RoundedToNextMultipleOf(checked_plainRowSize.value(), mPixelStoreUnpackAlignment);
@ -5986,11 +5806,9 @@ WebGLContext::TexSubImage2D_base(WebGLenum target, WebGLint level,
MakeContextCurrent();
int dstFormat = GetWebGLTexelFormat(format, type);
int actualSrcFormat = srcFormat == WebGLTexelFormat::Auto ? dstFormat : srcFormat;
size_t srcStride = srcStrideOrZero ? srcStrideOrZero : checked_alignedRowSize.value();
size_t dstPlainRowSize = texelSize * width;
size_t dstPlainRowSize = dstTexelSize * width;
// There are checks above to ensure that this won't overflow.
size_t dstStride = RoundedToNextMultipleOf(dstPlainRowSize, mPixelStoreUnpackAlignment).value();
@ -6004,11 +5822,12 @@ WebGLContext::TexSubImage2D_base(WebGLenum target, WebGLint level,
}
else
{
nsAutoArrayPtr<PRUint8> convertedData(new PRUint8[bytesNeeded]);
size_t convertedDataSize = height * dstStride;
nsAutoArrayPtr<PRUint8> convertedData(new PRUint8[convertedDataSize]);
ConvertImage(width, height, srcStride, dstStride,
(const PRUint8*)pixels, convertedData,
actualSrcFormat, srcPremultiplied,
dstFormat, mPixelStorePremultiplyAlpha, texelSize);
dstFormat, mPixelStorePremultiplyAlpha, dstTexelSize);
gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, convertedData);
}
@ -6051,7 +5870,7 @@ WebGLContext::TexSubImage2D(JSContext* cx, WebGLenum target, WebGLint level,
width, height, 0, format, type,
pixels->mData, pixels->mLength,
JS_GetTypedArrayType(pixels->mObj, cx),
WebGLTexelFormat::Auto, false);
WebGLTexelConversions::Auto, false);
}
NS_IMETHODIMP
@ -6075,7 +5894,7 @@ WebGLContext::TexSubImage2D_imageData(WebGLenum target, WebGLint level,
width, height, 4*width, format, type,
JS_GetArrayBufferViewData(pixels, cx), JS_GetArrayBufferViewByteLength(pixels, cx),
-1,
WebGLTexelFormat::RGBA8, false);
WebGLTexelConversions::RGBA8, false);
return NS_OK;
}
@ -6097,7 +5916,7 @@ WebGLContext::TexSubImage2D(JSContext* cx, WebGLenum target, WebGLint level,
4*pixels->GetWidth(), format, type,
arr.mData, arr.mLength,
-1,
WebGLTexelFormat::RGBA8, false);
WebGLTexelConversions::RGBA8, false);
}
NS_IMETHODIMP
@ -6122,7 +5941,7 @@ WebGLContext::TexSubImage2D(JSContext* /* unused */, WebGLenum target,
nsRefPtr<gfxImageSurface> isurf;
int srcFormat;
WebGLTexelFormat srcFormat;
rv = DOMElementToImageSurface(elt, getter_AddRefs(isurf), &srcFormat);
if (rv.Failed())
return;
@ -6232,52 +6051,52 @@ BaseTypeAndSizeFromUniformType(WebGLenum uType, WebGLenum *baseType, WebGLint *u
}
int mozilla::GetWebGLTexelFormat(GLenum format, GLenum type)
WebGLTexelFormat mozilla::GetWebGLTexelFormat(GLenum format, GLenum type)
{
if (type == LOCAL_GL_UNSIGNED_BYTE) {
switch (format) {
case LOCAL_GL_RGBA:
return WebGLTexelFormat::RGBA8;
return WebGLTexelConversions::RGBA8;
case LOCAL_GL_RGB:
return WebGLTexelFormat::RGB8;
return WebGLTexelConversions::RGB8;
case LOCAL_GL_ALPHA:
return WebGLTexelFormat::A8;
return WebGLTexelConversions::A8;
case LOCAL_GL_LUMINANCE:
return WebGLTexelFormat::R8;
return WebGLTexelConversions::R8;
case LOCAL_GL_LUMINANCE_ALPHA:
return WebGLTexelFormat::RA8;
return WebGLTexelConversions::RA8;
default:
NS_ASSERTION(false, "Coding mistake?! Should never reach this point.");
return WebGLTexelFormat::Generic;
NS_ABORT_IF_FALSE(false, "Coding mistake?! Should never reach this point.");
return WebGLTexelConversions::BadFormat;
}
} else if (type == LOCAL_GL_FLOAT) {
// OES_texture_float
switch (format) {
case LOCAL_GL_RGBA:
return WebGLTexelFormat::RGBA32F;
return WebGLTexelConversions::RGBA32F;
case LOCAL_GL_RGB:
return WebGLTexelFormat::RGB32F;
return WebGLTexelConversions::RGB32F;
case LOCAL_GL_ALPHA:
return WebGLTexelFormat::A32F;
return WebGLTexelConversions::A32F;
case LOCAL_GL_LUMINANCE:
return WebGLTexelFormat::R32F;
return WebGLTexelConversions::R32F;
case LOCAL_GL_LUMINANCE_ALPHA:
return WebGLTexelFormat::RA32F;
return WebGLTexelConversions::RA32F;
default:
NS_ASSERTION(false, "Coding mistake?! Should never reach this point.");
return WebGLTexelFormat::Generic;
NS_ABORT_IF_FALSE(false, "Coding mistake?! Should never reach this point.");
return WebGLTexelConversions::BadFormat;
}
} else {
switch (type) {
case LOCAL_GL_UNSIGNED_SHORT_4_4_4_4:
return WebGLTexelFormat::RGBA4444;
return WebGLTexelConversions::RGBA4444;
case LOCAL_GL_UNSIGNED_SHORT_5_5_5_1:
return WebGLTexelFormat::RGBA5551;
return WebGLTexelConversions::RGBA5551;
case LOCAL_GL_UNSIGNED_SHORT_5_6_5:
return WebGLTexelFormat::RGB565;
return WebGLTexelConversions::RGB565;
default:
NS_ASSERTION(false, "Coding mistake?! Should never reach this point.");
return WebGLTexelFormat::Generic;
NS_ABORT_IF_FALSE(false, "Coding mistake?! Should never reach this point.");
return WebGLTexelConversions::BadFormat;
}
}
}

382
content/canvas/src/WebGLTexelConversions.cpp Normal file
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@ -0,0 +1,382 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebGLTexelConversions.h"
namespace mozilla {
using namespace WebGLTexelConversions;
namespace {
/** @class WebGLImageConverter
*
* This class is just a helper to implement WebGLContext::ConvertImage below.
*
* Design comments:
*
* WebGLContext::ConvertImage has to handle hundreds of format conversion paths.
* It is important to minimize executable code size here. Instead of passing around
* a large number of function parameters hundreds of times, we create a
* WebGLImageConverter object once, storing these parameters, and then we call
* the run() method on it.
*/
class WebGLImageConverter
{
const size_t mWidth, mHeight;
const void* const mSrcStart;
void* const mDstStart;
const ptrdiff_t mSrcStride, mDstStride;
bool mAlreadyRun;
bool mSuccess;
/*
* Returns sizeof(texel)/sizeof(type). The point is that we will iterate over
* texels with typed pointers and this value will tell us by how much we need
* to increment these pointers to advance to the next texel.
*/
template<int Format>
static size_t NumElementsPerTexelForFormat() {
switch (Format) {
case R8:
case A8:
case R32F:
case A32F:
case RGBA5551:
case RGBA4444:
case RGB565:
return 1;
case RA8:
case RA32F:
return 2;
case RGB8:
case RGB32F:
return 3;
case RGBA8:
case BGRA8:
case BGRX8:
case RGBA32F:
return 4;
default:
NS_ABORT_IF_FALSE(false, "Unknown texel format. Coding mistake?");
return 0;
}
}
/*
* This is the completely format-specific templatized conversion function,
* that will be instantiated hundreds of times for all different combinations.
* It is important to avoid generating useless code here. In particular, many
* instantiations of this function template will never be called, so we try
* to return immediately in these cases to allow the compiler to avoid generating
* useless code.
*/
template<WebGLTexelFormat SrcFormat,
WebGLTexelFormat DstFormat,
WebGLTexelPremultiplicationOp PremultiplicationOp>
void run()
{
// check for never-called cases. We early-return to allow the compiler
// to avoid generating this code. It would be tempting to abort() instead,
// as returning early does leave the destination surface with uninitialized
// data, but that would not allow the compiler to avoid generating this code.
// So instead, we return early, so Success() will return false, and the caller
// must check that and abort in that case. See WebGLContext::ConvertImage.
if (SrcFormat == DstFormat &&
PremultiplicationOp == NoPremultiplicationOp)
{
// Should have used a fast exit path earlier, rather than entering this function.
// we explicitly return here to allow the compiler to avoid generating this code
return;
}
// Only textures uploaded from DOM elements or ImageData can allow DstFormat != SrcFormat.
// DOM elements can only give BGRA8, BGRX8, A8, RGB565 formats. See DOMElementToImageSurface.
// ImageData is always RGBA8. So all other SrcFormat will always satisfy DstFormat==SrcFormat,
// so we can avoid compiling the code for all the unreachable paths.
const bool CanSrcFormatComeFromDOMElementOrImageData
= SrcFormat == BGRA8 ||
SrcFormat == BGRX8 ||
SrcFormat == A8 ||
SrcFormat == RGB565 ||
SrcFormat == RGBA8;
if (!CanSrcFormatComeFromDOMElementOrImageData &&
SrcFormat != DstFormat)
{
return;
}
// Likewise, only textures uploaded from DOM elements or ImageData can possibly have to be unpremultiplied.
if (!CanSrcFormatComeFromDOMElementOrImageData &&
PremultiplicationOp == Unpremultiply)
{
return;
}
// there is no point in premultiplication/unpremultiplication
// in the following cases:
// - the source format has no alpha
// - the source format has no color
// - the destination format has no color
if (!HasAlpha(SrcFormat) ||
!HasColor(SrcFormat) ||
!HasColor(DstFormat))
{
if (PremultiplicationOp != NoPremultiplicationOp)
{
return;
}
}
// end of early return cases.
NS_ABORT_IF_FALSE(!mAlreadyRun, "converter should be run only once!");
mAlreadyRun = true;
// gather some compile-time meta-data about the formats at hand.
typedef
typename DataTypeForFormat<SrcFormat>::Type
SrcType;
typedef
typename DataTypeForFormat<DstFormat>::Type
DstType;
const int IntermediateSrcFormat
= IntermediateFormat<SrcFormat>::Value;
const int IntermediateDstFormat
= IntermediateFormat<DstFormat>::Value;
typedef
typename DataTypeForFormat<IntermediateSrcFormat>::Type
IntermediateSrcType;
typedef
typename DataTypeForFormat<IntermediateDstFormat>::Type
IntermediateDstType;
const size_t NumElementsPerSrcTexel = NumElementsPerTexelForFormat<SrcFormat>();
const size_t NumElementsPerDstTexel = NumElementsPerTexelForFormat<DstFormat>();
const size_t MaxElementsPerTexel = 4;
NS_ABORT_IF_FALSE(NumElementsPerSrcTexel <= MaxElementsPerTexel, "unhandled format");
NS_ABORT_IF_FALSE(NumElementsPerDstTexel <= MaxElementsPerTexel, "unhandled format");
// we assume that the strides are multiples of the sizeof of respective types.
// this assumption will allow us to iterate over src and dst images using typed
// pointers, e.g. uint8_t* or uint16_t* or float*, instead of untyped pointers.
// So this assumption allows us to write cleaner and safer code, but it might
// not be true forever and if it eventually becomes wrong, we'll have to revert
// to always iterating using uint8_t* pointers regardless of the types at hand.
NS_ABORT_IF_FALSE(mSrcStride % sizeof(SrcType) == 0 &&
mDstStride % sizeof(DstType) == 0,
"Unsupported: texture stride is not a multiple of sizeof(type)");
const ptrdiff_t srcStrideInElements = mSrcStride / sizeof(SrcType);
const ptrdiff_t dstStrideInElements = mDstStride / sizeof(DstType);
const SrcType *srcRowStart = static_cast<const SrcType*>(mSrcStart);
DstType *dstRowStart = static_cast<DstType*>(mDstStart);
// the loop performing the texture format conversion
for (size_t i = 0; i < mHeight; ++i) {
const SrcType *srcRowEnd = srcRowStart + mWidth * NumElementsPerSrcTexel;
const SrcType *srcPtr = srcRowStart;
DstType *dstPtr = dstRowStart;
while (srcPtr != srcRowEnd) {
// convert a single texel. We proceed in 3 steps: unpack the source texel
// so the corresponding interchange format (e.g. unpack RGB565 to RGBA8),
// convert the resulting data type to the destination type (e.g. convert
// from RGBA8 to RGBA32F), and finally pack the destination texel
// (e.g. pack RGBA32F to RGB32F).
IntermediateSrcType unpackedSrc[MaxElementsPerTexel];
IntermediateDstType unpackedDst[MaxElementsPerTexel];
// unpack a src texel to corresponding intermediate src format.
// for example, unpack RGB565 to RGBA8
unpack<SrcFormat>(srcPtr, unpackedSrc);
// convert the data type to the destination type, if needed.
// for example, convert RGBA8 to RGBA32F
convertType(unpackedSrc, unpackedDst);
// pack the destination texel.
// for example, pack RGBA32F to RGB32F
pack<DstFormat, PremultiplicationOp>(unpackedDst, dstPtr);
srcPtr += NumElementsPerSrcTexel;
dstPtr += NumElementsPerDstTexel;
}
srcRowStart += srcStrideInElements;
dstRowStart += dstStrideInElements;
}
mSuccess = true;
return;
}
template<WebGLTexelFormat SrcFormat, WebGLTexelFormat DstFormat>
void run(WebGLTexelPremultiplicationOp premultiplicationOp)
{
#define WEBGLIMAGECONVERTER_CASE_PREMULTIPLICATIONOP(PremultiplicationOp) \
case PremultiplicationOp: \
return run<SrcFormat, DstFormat, PremultiplicationOp>();
switch (premultiplicationOp) {
WEBGLIMAGECONVERTER_CASE_PREMULTIPLICATIONOP(NoPremultiplicationOp)
WEBGLIMAGECONVERTER_CASE_PREMULTIPLICATIONOP(Premultiply)
WEBGLIMAGECONVERTER_CASE_PREMULTIPLICATIONOP(Unpremultiply)
default:
NS_ABORT_IF_FALSE(false, "unhandled case. Coding mistake?");
}
#undef WEBGLIMAGECONVERTER_CASE_PREMULTIPLICATIONOP
}
template<WebGLTexelFormat SrcFormat>
void run(WebGLTexelFormat dstFormat,
WebGLTexelPremultiplicationOp premultiplicationOp)
{
#define WEBGLIMAGECONVERTER_CASE_DSTFORMAT(DstFormat) \
case DstFormat: \
return run<SrcFormat, DstFormat>(premultiplicationOp);
switch (dstFormat) {
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(R8)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(A8)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(R32F)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(A32F)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RA8)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RA32F)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RGB8)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RGB565)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RGB32F)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RGBA8)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RGBA5551)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RGBA4444)
WEBGLIMAGECONVERTER_CASE_DSTFORMAT(RGBA32F)
default:
NS_ABORT_IF_FALSE(false, "unhandled case. Coding mistake?");
}
#undef WEBGLIMAGECONVERTER_CASE_DSTFORMAT
}
public:
void run(WebGLTexelFormat srcFormat,
WebGLTexelFormat dstFormat,
WebGLTexelPremultiplicationOp premultiplicationOp)
{
#define WEBGLIMAGECONVERTER_CASE_SRCFORMAT(SrcFormat) \
case SrcFormat: \
return run<SrcFormat>(dstFormat, premultiplicationOp);
switch (srcFormat) {
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(R8)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(A8)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(R32F)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(A32F)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RA8)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RA32F)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RGB8)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(BGRX8) // source format only
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RGB565)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RGB32F)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RGBA8)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(BGRA8)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RGBA5551)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RGBA4444)
WEBGLIMAGECONVERTER_CASE_SRCFORMAT(RGBA32F)
default:
NS_ABORT_IF_FALSE(false, "unhandled case. Coding mistake?");
}
#undef WEBGLIMAGECONVERTER_CASE_SRCFORMAT
}
WebGLImageConverter(size_t width, size_t height,
const void* srcStart, void* dstStart,
ptrdiff_t srcStride, ptrdiff_t dstStride)
: mWidth(width), mHeight(height),
mSrcStart(srcStart), mDstStart(dstStart),
mSrcStride(srcStride), mDstStride(dstStride),
mAlreadyRun(false), mSuccess(false)
{}
bool Success() const {
return mSuccess;
}
};
} // end anonymous namespace
void
WebGLContext::ConvertImage(size_t width, size_t height, size_t srcStride, size_t dstStride,
const uint8_t* src, uint8_t *dst,
WebGLTexelFormat srcFormat, bool srcPremultiplied,
WebGLTexelFormat dstFormat, bool dstPremultiplied,
size_t dstTexelSize)
{
if (width <= 0 || height <= 0)
return;
const bool FormatsRequireNoPremultiplicationOp =
!HasAlpha(srcFormat) ||
!HasColor(srcFormat) ||
!HasColor(dstFormat);
if (srcFormat == dstFormat &&
(FormatsRequireNoPremultiplicationOp || srcPremultiplied == dstPremultiplied))
{
// fast exit path: we just have to memcpy all the rows.
//
// The case where absolutely nothing needs to be done is supposed to have
// been handled earlier (in TexImage2D_base, etc).
//
// So the case we're handling here is when even though no format conversion is needed,
// we still might have to flip vertically and/or to adjust to a different stride.
NS_ABORT_IF_FALSE(mPixelStoreFlipY || srcStride != dstStride, "Performance trap -- should handle this case earlier, to avoid memcpy");
size_t row_size = width * dstTexelSize; // doesn't matter, src and dst formats agree
const uint8_t* ptr = src;
const uint8_t* src_end = src + height * srcStride;
uint8_t* dst_row = mPixelStoreFlipY
? dst + (height-1) * dstStride
: dst;
ptrdiff_t dstStrideSigned(dstStride);
ptrdiff_t dst_delta = mPixelStoreFlipY ? -dstStrideSigned : dstStrideSigned;
while(ptr != src_end) {
memcpy(dst_row, ptr, row_size);
ptr += srcStride;
dst_row += dst_delta;
}
return;
}
uint8_t* dstStart = dst;
ptrdiff_t signedDstStride = dstStride;
if (mPixelStoreFlipY) {
dstStart = dst + (height - 1) * dstStride;
signedDstStride = -dstStride;
}
WebGLImageConverter converter(width, height, src, dstStart, srcStride, signedDstStride);
const WebGLTexelPremultiplicationOp premultiplicationOp
= FormatsRequireNoPremultiplicationOp ? NoPremultiplicationOp
: (!srcPremultiplied && dstPremultiplied) ? Premultiply
: (srcPremultiplied && !dstPremultiplied) ? Unpremultiply
: NoPremultiplicationOp;
converter.run(srcFormat, dstFormat, premultiplicationOp);
if (!converter.Success()) {
// the dst image may be left uninitialized, so we better not try to
// continue even in release builds. This should never happen anyway,
// and would be a bug in our code.
NS_RUNTIMEABORT("programming mistake in WebGL texture conversions");
}
}
} // end namespace mozilla

771
content/canvas/src/WebGLTexelConversions.h
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@ -25,17 +25,6 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// the pixel conversions code here is originally from this file:
// http://trac.webkit.org/browser/trunk/WebCore/platform/graphics/GraphicsContext3D.cpp
// Keep as much as possible unchanged to ease sharing code with the WebKit guys.
// Changes:
// * added BGR8 path, we need it in Mozilla to load textures from DOMElements
// * enclosing in a namespace WebGLTexelConversions to make it clear it is, in profilers and in symbol table dumps
// * added __restrict keywords. Although non-standard, this is very well supported across all compilers
// that I know of (GCC/LLVM/MSC/ICC/XLC...)
// * optimized scaleFactor computation in Unmultiply functions (1 div instead of 2)
#ifndef WEBGLTEXELCONVERSIONS_H_
#define WEBGLTEXELCONVERSIONS_H_
@ -44,6 +33,7 @@
#endif
#include "WebGLContext.h"
#include "mozilla/StandardInteger.h"
#if defined _MSC_VER
#define FORCE_INLINE __forceinline
@ -57,410 +47,647 @@ namespace mozilla {
namespace WebGLTexelConversions {
enum WebGLTexelPremultiplicationOp
{
NoPremultiplicationOp,
Premultiply,
Unpremultiply
};
template<int Format>
struct IsFloatFormat
{
static const bool Value =
Format == RGBA32F ||
Format == RGB32F ||
Format == RA32F ||
Format == R32F ||
Format == A32F;
};
template<int Format>
struct Is16bppFormat
{
static const bool Value =
Format == RGBA4444 ||
Format == RGBA5551 ||
Format == RGB565;
};
template<int Format,
bool IsFloat = IsFloatFormat<Format>::Value,
bool Is16bpp = Is16bppFormat<Format>::Value>
struct DataTypeForFormat
{
typedef uint8_t Type;
};
template<int Format>
struct DataTypeForFormat<Format, true, false>
{
typedef float Type;
};
template<int Format>
struct DataTypeForFormat<Format, false, true>
{
typedef uint16_t Type;
};
template<int Format>
struct IntermediateFormat
{
static const int Value = IsFloatFormat<Format>::Value ? RGBA32F : RGBA8;
};
inline size_t TexelBytesForFormat(int format) {
switch (format) {
case WebGLTexelConversions::R8:
case WebGLTexelConversions::A8:
return 1;
case WebGLTexelConversions::RA8:
case WebGLTexelConversions::RGBA5551:
case WebGLTexelConversions::RGBA4444:
case WebGLTexelConversions::RGB565:
return 2;
case WebGLTexelConversions::RGB8:
return 3;
case WebGLTexelConversions::RGBA8:
case WebGLTexelConversions::BGRA8:
case WebGLTexelConversions::BGRX8:
case WebGLTexelConversions::R32F:
case WebGLTexelConversions::A32F:
return 4;
case WebGLTexelConversions::RA32F:
return 8;
case WebGLTexelConversions::RGB32F:
return 12;
case WebGLTexelConversions::RGBA32F:
return 16;
default:
NS_ABORT_IF_FALSE(false, "Unknown texel format. Coding mistake?");
return 0;
}
}
FORCE_INLINE bool HasAlpha(int format) {
return format == A8 ||
format == A32F ||
format == RA8 ||
format == RA32F ||
format == RGBA8 ||
format == BGRA8 ||
format == RGBA32F ||
format == RGBA4444 ||
format == RGBA5551;
}
FORCE_INLINE bool HasColor(int format) {
return format == R8 ||
format == R32F ||
format == RA8 ||
format == RA32F ||
format == RGB8 ||
format == BGRX8 ||
format == RGB565 ||
format == RGB32F ||
format == RGBA8 ||
format == BGRA8 ||
format == RGBA32F ||
format == RGBA4444 ||
format == RGBA5551;
}
/****** BEGIN CODE SHARED WITH WEBKIT ******/
// the pack/unpack functions here are originally from this file:
// http://trac.webkit.org/browser/trunk/WebCore/platform/graphics/GraphicsContext3D.cpp
//----------------------------------------------------------------------
// Pixel unpacking routines.
FORCE_INLINE void unpackRGBA8ToRGBA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<int Format>
FORCE_INLINE void
unpack(const typename DataTypeForFormat<Format>::Type* __restrict src,
typename DataTypeForFormat<IntermediateFormat<Format>::Value>::Type* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[1];
destination[2] = source[2];
destination[3] = source[3];
NS_ABORT_IF_FALSE(false, "Unimplemented texture format conversion");
}
FORCE_INLINE void unpackRGB8ToRGBA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<RGBA8>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[1];
destination[2] = source[2];
destination[3] = 0xFF;
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
}
FORCE_INLINE void unpackBGRA8ToRGBA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<RGB8>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
destination[0] = source[2];
destination[1] = source[1];
destination[2] = source[0];
destination[3] = source[3];
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = 0xFF;
}
FORCE_INLINE void unpackBGR8ToRGBA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<BGRA8>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
destination[0] = source[2];
destination[1] = source[1];
destination[2] = source[0];
destination[3] = 0xFF;
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
dst[3] = src[3];
}
FORCE_INLINE void unpackRGBA5551ToRGBA8(const uint16_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<BGRX8>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
uint16_t packedValue = source[0];
uint8_t r = packedValue >> 11;
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
dst[3] = 0xFF;
}
template<> FORCE_INLINE void
unpack<RGBA5551>(const uint16_t* __restrict src, uint8_t* __restrict dst)
{
uint16_t packedValue = src[0];
uint8_t r = (packedValue >> 11) & 0x1F;
uint8_t g = (packedValue >> 6) & 0x1F;
uint8_t b = (packedValue >> 1) & 0x1F;
destination[0] = (r << 3) | (r & 0x7);
destination[1] = (g << 3) | (g & 0x7);
destination[2] = (b << 3) | (b & 0x7);
destination[3] = (packedValue & 0x1) ? 0xFF : 0x0;
dst[0] = (r << 3) | (r & 0x7);
dst[1] = (g << 3) | (g & 0x7);
dst[2] = (b << 3) | (b & 0x7);
dst[3] = (packedValue & 0x1) ? 0xFF : 0;
}
FORCE_INLINE void unpackRGBA4444ToRGBA8(const uint16_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<RGBA4444>(const uint16_t* __restrict src, uint8_t* __restrict dst)
{
uint16_t packedValue = source[0];
uint8_t r = packedValue >> 12;
uint16_t packedValue = src[0];
uint8_t r = (packedValue >> 12) & 0x0F;
uint8_t g = (packedValue >> 8) & 0x0F;
uint8_t b = (packedValue >> 4) & 0x0F;
uint8_t a = packedValue & 0x0F;
destination[0] = r << 4 | r;
destination[1] = g << 4 | g;
destination[2] = b << 4 | b;
destination[3] = a << 4 | a;
dst[0] = (r << 4) | r;
dst[1] = (g << 4) | g;
dst[2] = (b << 4) | b;
dst[3] = (a << 4) | a;
}
FORCE_INLINE void unpackRGB565ToRGBA8(const uint16_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<RGB565>(const uint16_t* __restrict src, uint8_t* __restrict dst)
{
uint16_t packedValue = source[0];
uint8_t r = packedValue >> 11;
uint16_t packedValue = src[0];
uint8_t r = (packedValue >> 11) & 0x1F;
uint8_t g = (packedValue >> 5) & 0x3F;
uint8_t b = packedValue & 0x1F;
destination[0] = (r << 3) | (r & 0x7);
destination[1] = (g << 2) | (g & 0x3);
destination[2] = (b << 3) | (b & 0x7);
destination[3] = 0xFF;
dst[0] = (r << 3) | (r & 0x7);
dst[1] = (g << 2) | (g & 0x3);
dst[2] = (b << 3) | (b & 0x7);
dst[3] = 0xFF;
}
FORCE_INLINE void unpackR8ToRGBA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<R8>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[0];
destination[2] = source[0];
destination[3] = 0xFF;
dst[0] = src[0];
dst[1] = src[0];
dst[2] = src[0];
dst[3] = 0xFF;
}
FORCE_INLINE void unpackRA8ToRGBA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<RA8>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[0];
destination[2] = source[0];
destination[3] = source[1];
dst[0] = src[0];
dst[1] = src[0];
dst[2] = src[0];
dst[3] = src[1];
}
FORCE_INLINE void unpackA8ToRGBA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
unpack<A8>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
destination[0] = 0x0;
destination[1] = 0x0;
destination[2] = 0x0;
destination[3] = source[0];
dst[0] = 0;
dst[1] = 0;
dst[2] = 0;
dst[3] = src[0];
}
FORCE_INLINE void unpackRGB32FToRGBA32F(const float* __restrict source, float* __restrict destination)
template<> FORCE_INLINE void
unpack<RGBA32F>(const float* __restrict src, float* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[1];
destination[2] = source[2];
destination[3] = 1;
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
}
FORCE_INLINE void unpackR32FToRGBA32F(const float* __restrict source, float* __restrict destination)
template<> FORCE_INLINE void
unpack<RGB32F>(const float* __restrict src, float* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[0];
destination[2] = source[0];
destination[3] = 1;
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = 1.0f;
}
FORCE_INLINE void unpackRA32FToRGBA32F(const float* __restrict source, float* __restrict destination)
template<> FORCE_INLINE void
unpack<R32F>(const float* __restrict src, float* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[0];
destination[2] = source[0];
destination[3] = source[1];
dst[0] = src[0];
dst[1] = src[0];
dst[2] = src[0];
dst[3] = 1.0f;
}
FORCE_INLINE void unpackA32FToRGBA32F(const float* __restrict source, float* __restrict destination)
template<> FORCE_INLINE void
unpack<RA32F>(const float* __restrict src, float* __restrict dst)
{
destination[0] = 0;
destination[1] = 0;
destination[2] = 0;
destination[3] = source[0];
dst[0] = src[0];
dst[1] = src[0];
dst[2] = src[0];
dst[3] = src[1];
}
template<> FORCE_INLINE void
unpack<A32F>(const float* __restrict src, float* __restrict dst)
{
dst[0] = 0;
dst[1] = 0;
dst[2] = 0;
dst[3] = src[0];
}
//----------------------------------------------------------------------
// Pixel packing routines.
//
FORCE_INLINE void packRGBA8ToA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<int Format, int PremultiplicationOp>
FORCE_INLINE void
pack(const typename DataTypeForFormat<IntermediateFormat<Format>::Value>::Type* __restrict src,
typename DataTypeForFormat<Format>::Type* __restrict dst)
{
destination[0] = source[3];
NS_ABORT_IF_FALSE(false, "Unimplemented texture format conversion");
}
FORCE_INLINE void packRGBA8ToR8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<A8, NoPremultiplicationOp>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
destination[0] = source[0];
dst[0] = src[3];
}
FORCE_INLINE void packRGBA8ToR8Premultiply(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<A8, Premultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = source[3] / 255.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
destination[0] = sourceR;
dst[0] = src[3];
}
template<> FORCE_INLINE void
pack<A8, Unpremultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
dst[0] = src[3];
}
template<> FORCE_INLINE void
pack<R8, NoPremultiplicationOp>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
dst[0] = src[0];
}
template<> FORCE_INLINE void
pack<R8, Premultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = src[3] / 255.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
dst[0] = srcR;
}
template<> FORCE_INLINE void
pack<R8, Unpremultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
dst[0] = srcR;
}
template<> FORCE_INLINE void
pack<RA8, NoPremultiplicationOp>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
dst[0] = src[0];
dst[1] = src[3];
}
template<> FORCE_INLINE void
pack<RA8, Premultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = src[3] / 255.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
dst[0] = srcR;
dst[1] = src[3];
}
// FIXME: this routine is lossy and must be removed.
FORCE_INLINE void packRGBA8ToR8Unmultiply(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RA8, Unpremultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = source[3] ? 255.0f / source[3] : 1.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
destination[0] = sourceR;
float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
dst[0] = srcR;
dst[1] = src[3];
}
FORCE_INLINE void packRGBA8ToRA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGB8, NoPremultiplicationOp>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[3];
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
}
FORCE_INLINE void packRGBA8ToRA8Premultiply(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGB8, Premultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = source[3] / 255.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
destination[0] = sourceR;
destination[1] = source[3];
float scaleFactor = src[3] / 255.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
dst[0] = srcR;
dst[1] = srcG;
dst[2] = srcB;
}
template<> FORCE_INLINE void
pack<RGB8, Unpremultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
dst[0] = srcR;
dst[1] = srcG;
dst[2] = srcB;
}
template<> FORCE_INLINE void
pack<RGBA8, NoPremultiplicationOp>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
}
template<> FORCE_INLINE void
pack<RGBA8, Premultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = src[3] / 255.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
dst[0] = srcR;
dst[1] = srcG;
dst[2] = srcB;
dst[3] = src[3];
}
// FIXME: this routine is lossy and must be removed.
FORCE_INLINE void packRGBA8ToRA8Unmultiply(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA8, Unpremultiply>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
float scaleFactor = source[3] ? 255.0f / source[3] : 1.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
destination[0] = sourceR;
destination[1] = source[3];
float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
dst[0] = srcR;
dst[1] = srcG;
dst[2] = srcB;
dst[3] = src[3];
}
FORCE_INLINE void packRGBA8ToRGB8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA4444, NoPremultiplicationOp>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[1];
destination[2] = source[2];
*dst = ( ((src[0] & 0xF0) << 8)
| ((src[1] & 0xF0) << 4)
| (src[2] & 0xF0)
| (src[3] >> 4) );
}
FORCE_INLINE void packRGBA8ToRGB8Premultiply(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA4444, Premultiply>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
float scaleFactor = source[3] / 255.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
destination[0] = sourceR;
destination[1] = sourceG;
destination[2] = sourceB;
float scaleFactor = src[3] / 255.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
*dst = ( ((srcR & 0xF0) << 8)
| ((srcG & 0xF0) << 4)
| (srcB & 0xF0)
| (src[3] >> 4));
}
// FIXME: this routine is lossy and must be removed.
FORCE_INLINE void packRGBA8ToRGB8Unmultiply(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA4444, Unpremultiply>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
float scaleFactor = source[3] ? 255.0f / source[3] : 1.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
destination[0] = sourceR;
destination[1] = sourceG;
destination[2] = sourceB;
float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
*dst = ( ((srcR & 0xF0) << 8)
| ((srcG & 0xF0) << 4)
| (srcB & 0xF0)
| (src[3] >> 4));
}
// This is only used when the source format is different than kSourceFormatRGBA8.
FORCE_INLINE void packRGBA8ToRGBA8(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA5551, NoPremultiplicationOp>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[1];
destination[2] = source[2];
destination[3] = source[3];
*dst = ( ((src[0] & 0xF8) << 8)
| ((src[1] & 0xF8) << 3)
| ((src[2] & 0xF8) >> 2)
| (src[3] >> 7));
}
FORCE_INLINE void packRGBA8ToRGBA8Premultiply(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA5551, Premultiply>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
float scaleFactor = source[3] / 255.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
destination[0] = sourceR;
destination[1] = sourceG;
destination[2] = sourceB;
destination[3] = source[3];
float scaleFactor = src[3] / 255.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
*dst = ( ((srcR & 0xF8) << 8)
| ((srcG & 0xF8) << 3)
| ((srcB & 0xF8) >> 2)
| (src[3] >> 7));
}
// FIXME: this routine is lossy and must be removed.
FORCE_INLINE void packRGBA8ToRGBA8Unmultiply(const uint8_t* __restrict source, uint8_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA5551, Unpremultiply>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
float scaleFactor = source[3] ? 255.0f / source[3] : 1.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
destination[0] = sourceR;
destination[1] = sourceG;
destination[2] = sourceB;
destination[3] = source[3];
float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
*dst = ( ((srcR & 0xF8) << 8)
| ((srcG & 0xF8) << 3)
| ((srcB & 0xF8) >> 2)
| (src[3] >> 7));
}
FORCE_INLINE void packRGBA8ToUnsignedShort4444(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGB565, NoPremultiplicationOp>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
*destination = (((source[0] & 0xF0) << 8)
| ((source[1] & 0xF0) << 4)
| (source[2] & 0xF0)
| (source[3] >> 4));
*dst = ( ((src[0] & 0xF8) << 8)
| ((src[1] & 0xFC) << 3)
| ((src[2] & 0xF8) >> 3));
}
FORCE_INLINE void packRGBA8ToUnsignedShort4444Premultiply(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGB565, Premultiply>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
float scaleFactor = source[3] / 255.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
*destination = (((sourceR & 0xF0) << 8)
| ((sourceG & 0xF0) << 4)
| (sourceB & 0xF0)
| (source[3] >> 4));
float scaleFactor = src[3] / 255.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
*dst = ( ((srcR & 0xF8) << 8)
| ((srcG & 0xFC) << 3)
| ((srcB & 0xF8) >> 3));
}
// FIXME: this routine is lossy and must be removed.
FORCE_INLINE void packRGBA8ToUnsignedShort4444Unmultiply(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGB565, Unpremultiply>(const uint8_t* __restrict src, uint16_t* __restrict dst)
{
float scaleFactor = source[3] ? 255.0f / source[3] : 1.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
*destination = (((sourceR & 0xF0) << 8)
| ((sourceG & 0xF0) << 4)
| (sourceB & 0xF0)
| (source[3] >> 4));
float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f;
uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor);
uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor);
uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor);
*dst = ( ((srcR & 0xF8) << 8)
| ((srcG & 0xFC) << 3)
| ((srcB & 0xF8) >> 3));
}
FORCE_INLINE void packRGBA8ToUnsignedShort5551(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGB32F, NoPremultiplicationOp>(const float* __restrict src, float* __restrict dst)
{
*destination = (((source[0] & 0xF8) << 8)
| ((source[1] & 0xF8) << 3)
| ((source[2] & 0xF8) >> 2)
| (source[3] >> 7));
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
}
FORCE_INLINE void packRGBA8ToUnsignedShort5551Premultiply(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGB32F, Premultiply>(const float* __restrict src, float* __restrict dst)
{
float scaleFactor = source[3] / 255.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
*destination = (((sourceR & 0xF8) << 8)
| ((sourceG & 0xF8) << 3)
| ((sourceB & 0xF8) >> 2)
| (source[3] >> 7));
float scaleFactor = src[3];
dst[0] = src[0] * scaleFactor;
dst[1] = src[1] * scaleFactor;
dst[2] = src[2] * scaleFactor;
}
// FIXME: this routine is lossy and must be removed.
FORCE_INLINE void packRGBA8ToUnsignedShort5551Unmultiply(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA32F, NoPremultiplicationOp>(const float* __restrict src, float* __restrict dst)
{
float scaleFactor = source[3] ? 255.0f / source[3] : 1.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
*destination = (((sourceR & 0xF8) << 8)
| ((sourceG & 0xF8) << 3)
| ((sourceB & 0xF8) >> 2)
| (source[3] >> 7));
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
}
FORCE_INLINE void packRGBA8ToUnsignedShort565(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<RGBA32F, Premultiply>(const float* __restrict src, float* __restrict dst)
{
*destination = (((source[0] & 0xF8) << 8)
| ((source[1] & 0xFC) << 3)
| ((source[2] & 0xF8) >> 3));
float scaleFactor = src[3];
dst[0] = src[0] * scaleFactor;
dst[1] = src[1] * scaleFactor;
dst[2] = src[2] * scaleFactor;
dst[3] = src[3];
}
FORCE_INLINE void packRGBA8ToUnsignedShort565Premultiply(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<A32F, NoPremultiplicationOp>(const float* __restrict src, float* __restrict dst)
{
float scaleFactor = source[3] / 255.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
*destination = (((sourceR & 0xF8) << 8)
| ((sourceG & 0xFC) << 3)
| ((sourceB & 0xF8) >> 3));
dst[0] = src[3];
}
// FIXME: this routine is lossy and must be removed.
FORCE_INLINE void packRGBA8ToUnsignedShort565Unmultiply(const uint8_t* __restrict source, uint16_t* __restrict destination)
template<> FORCE_INLINE void
pack<A32F, Premultiply>(const float* __restrict src, float* __restrict dst)
{
float scaleFactor = source[3] ? 255.0f / source[3] : 1.0f;
uint8_t sourceR = static_cast<uint8_t>(static_cast<float>(source[0]) * scaleFactor);
uint8_t sourceG = static_cast<uint8_t>(static_cast<float>(source[1]) * scaleFactor);
uint8_t sourceB = static_cast<uint8_t>(static_cast<float>(source[2]) * scaleFactor);
*destination = (((sourceR & 0xF8) << 8)
| ((sourceG & 0xFC) << 3)
| ((sourceB & 0xF8) >> 3));
dst[0] = src[3];
}
FORCE_INLINE void packRGBA32FToRGB32F(const float* __restrict source, float* __restrict destination)
template<> FORCE_INLINE void
pack<R32F, NoPremultiplicationOp>(const float* __restrict src, float* __restrict dst)
{
destination[0] = source[0];
destination[1] = source[1];
destination[2] = source[2];
dst[0] = src[0];
}
FORCE_INLINE void packRGBA32FToRGB32FPremultiply(const float* __restrict source, float* __restrict destination)
template<> FORCE_INLINE void
pack<R32F, Premultiply>(const float* __restrict src, float* __restrict dst)
{
float scaleFactor = source[3];
destination[0] = source[0] * scaleFactor;
destination[1] = source[1] * scaleFactor;
destination[2] = source[2] * scaleFactor;
float scaleFactor = src[3];
dst[0] = src[0] * scaleFactor;
}
FORCE_INLINE void packRGBA32FToRGBA32FPremultiply(const float* __restrict source, float* __restrict destination)
template<> FORCE_INLINE void
pack<RA32F, NoPremultiplicationOp>(const float* __restrict src, float* __restrict dst)
{
float scaleFactor = source[3];
destination[0] = source[0] * scaleFactor;
destination[1] = source[1] * scaleFactor;
destination[2] = source[2] * scaleFactor;
destination[3] = source[3];
dst[0] = src[0];
dst[1] = src[3];
}
FORCE_INLINE void packRGBA32FToA32F(const float* __restrict source, float* __restrict destination)
template<> FORCE_INLINE void
pack<RA32F, Premultiply>(const float* __restrict src, float* __restrict dst)
{
destination[0] = source[3];
}
// identical to above, to avoid special-casing
FORCE_INLINE void packRGBA32FToA32FPremultiply(const float* __restrict source, float* __restrict destination)
{
destination[0] = source[3];
}
FORCE_INLINE void packRGBA32FToR32F(const float* __restrict source, float* __restrict destination)
{
destination[0] = source[0];
}
FORCE_INLINE void packRGBA32FToR32FPremultiply(const float* __restrict source, float* __restrict destination)
{
float scaleFactor = source[3];
destination[0] = source[0] * scaleFactor;
}
FORCE_INLINE void packRGBA32FToRA32F(const float* __restrict source, float* __restrict destination)
{
destination[0] = source[0];
destination[1] = source[3];
}
FORCE_INLINE void packRGBA32FToRA32FPremultiply(const float* __restrict source, float* __restrict destination)
{
float scaleFactor = source[3];
destination[0] = source[0] * scaleFactor;
destination[1] = scaleFactor;
float scaleFactor = src[3];
dst[0] = src[0] * scaleFactor;
dst[1] = scaleFactor;
}
/****** END CODE SHARED WITH WEBKIT ******/
template<typename SrcType, typename DstType> FORCE_INLINE void
convertType(const SrcType* __restrict src, DstType* __restrict dst)
{
NS_ABORT_IF_FALSE(false, "Unimplemented texture format conversion");
}
template<> FORCE_INLINE void
convertType<uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
}
template<> FORCE_INLINE void
convertType<float, float>(const float* __restrict src, float* __restrict dst)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
}
template<> FORCE_INLINE void
convertType<uint8_t, float>(const uint8_t* __restrict src, float* __restrict dst)
{
const float scaleFactor = 1.f / 255.0f;
dst[0] = src[0] * scaleFactor;
dst[1] = src[1] * scaleFactor;
dst[2] = src[2] * scaleFactor;
dst[3] = src[3] * scaleFactor;
}
#undef FORCE_INLINE
} // end namespace WebGLTexelConversions
} // end namespace mozilla