SurfaceFormat
UploadImageDataToTexture(GLContext* gl,
unsigned char* aData,
int32_t aStride,
gfxImageFormat aFormat,
const nsIntRegion& aDstRegion,
GLuint& aTexture,
bool aOverwrite,
bool aPixelBuffer,
GLenum aTextureUnit,
GLenum aTextureTarget)
{
bool textureInited = aOverwrite ? false : true;
gl->MakeCurrent();
gl->fActiveTexture(aTextureUnit);
if (!aTexture) {
gl->fGenTextures(1, &aTexture);
gl->fBindTexture(aTextureTarget, aTexture);
gl->fTexParameteri(aTextureTarget,
LOCAL_GL_TEXTURE_MIN_FILTER,
LOCAL_GL_LINEAR);
gl->fTexParameteri(aTextureTarget,
LOCAL_GL_TEXTURE_MAG_FILTER,
LOCAL_GL_LINEAR);
gl->fTexParameteri(aTextureTarget,
LOCAL_GL_TEXTURE_WRAP_S,
LOCAL_GL_CLAMP_TO_EDGE);
gl->fTexParameteri(aTextureTarget,
LOCAL_GL_TEXTURE_WRAP_T,
LOCAL_GL_CLAMP_TO_EDGE);
textureInited = false;
} else {
gl->fBindTexture(aTextureTarget, aTexture);
}
nsIntRegion paintRegion;
if (!textureInited) {
paintRegion = nsIntRegion(aDstRegion.GetBounds());
} else {
paintRegion = aDstRegion;
}
GLenum format;
GLenum internalFormat;
GLenum type;
int32_t pixelSize = gfxASurface::BytePerPixelFromFormat(aFormat);
SurfaceFormat surfaceFormat;
MOZ_ASSERT(gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA ||
gl->GetPreferredARGB32Format() == LOCAL_GL_RGBA);
switch (aFormat) {
case gfxImageFormatARGB32:
if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
format = LOCAL_GL_BGRA;
surfaceFormat = gfx::FORMAT_R8G8B8A8;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
} else {
format = LOCAL_GL_RGBA;
surfaceFormat = gfx::FORMAT_B8G8R8A8;
type = LOCAL_GL_UNSIGNED_BYTE;
}
internalFormat = LOCAL_GL_RGBA;
break;
case gfxImageFormatRGB24:
// Treat RGB24 surfaces as RGBA32 except for the surface
// format used.
if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
format = LOCAL_GL_BGRA;
surfaceFormat = gfx::FORMAT_R8G8B8X8;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
} else {
format = LOCAL_GL_RGBA;
surfaceFormat = gfx::FORMAT_B8G8R8X8;
type = LOCAL_GL_UNSIGNED_BYTE;
}
internalFormat = LOCAL_GL_RGBA;
break;
case gfxImageFormatRGB16_565:
internalFormat = format = LOCAL_GL_RGB;
type = LOCAL_GL_UNSIGNED_SHORT_5_6_5;
surfaceFormat = gfx::FORMAT_R5G6B5;
break;
case gfxImageFormatA8:
internalFormat = format = LOCAL_GL_LUMINANCE;
type = LOCAL_GL_UNSIGNED_BYTE;
// We don't have a specific luminance shader
surfaceFormat = gfx::FORMAT_A8;
break;
default:
NS_ASSERTION(false, "Unhandled image surface format!");
format = 0;
type = 0;
surfaceFormat = gfx::FORMAT_UNKNOWN;
}
nsIntRegionRectIterator iter(paintRegion);
const nsIntRect *iterRect;
// Top left point of the region's bounding rectangle.
nsIntPoint topLeft = paintRegion.GetBounds().TopLeft();
while ((iterRect = iter.Next())) {
// The inital data pointer is at the top left point of the region's
// bounding rectangle. We need to find the offset of this rect
// within the region and adjust the data pointer accordingly.
unsigned char *rectData =
aData + DataOffset(iterRect->TopLeft() - topLeft, aStride, aFormat);
NS_ASSERTION(textureInited || (iterRect->x == 0 && iterRect->y == 0),
"Must be uploading to the origin when we don't have an existing texture");
if (textureInited && CanUploadSubTextures(gl)) {
TexSubImage2DHelper(gl,
aTextureTarget,
0,
iterRect->x,
iterRect->y,
iterRect->width,
iterRect->height,
aStride,
pixelSize,
format,
type,
rectData);
} else {
TexImage2DHelper(gl,
aTextureTarget,
0,
internalFormat,
iterRect->width,
iterRect->height,
aStride,
pixelSize,
0,
format,
type,
rectData);
}
}
return surfaceFormat;
}
SurfaceFormat
UploadImageDataToTexture(GLContext* gl,
unsigned char* aData,
int32_t aStride,
SurfaceFormat aFormat,
const nsIntRegion& aDstRegion,
GLuint aTexture,
const gfx::IntSize& aSize,
size_t* aOutUploadSize,
bool aNeedInit,
GLenum aTextureUnit,
GLenum aTextureTarget)
{
gl->MakeCurrent();
gl->fActiveTexture(aTextureUnit);
gl->fBindTexture(aTextureTarget, aTexture);
GLenum format = 0;
GLenum internalFormat = 0;
GLenum type = 0;
int32_t pixelSize = BytesPerPixel(aFormat);
SurfaceFormat surfaceFormat = gfx::SurfaceFormat::UNKNOWN;
MOZ_ASSERT(gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA ||
gl->GetPreferredARGB32Format() == LOCAL_GL_RGBA);
switch (aFormat) {
case SurfaceFormat::B8G8R8A8:
if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
format = LOCAL_GL_BGRA;
surfaceFormat = SurfaceFormat::R8G8B8A8;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
} else {
format = LOCAL_GL_RGBA;
surfaceFormat = SurfaceFormat::B8G8R8A8;
type = LOCAL_GL_UNSIGNED_BYTE;
}
internalFormat = LOCAL_GL_RGBA;
break;
case SurfaceFormat::B8G8R8X8:
// Treat BGRX surfaces as BGRA except for the surface
// format used.
if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
format = LOCAL_GL_BGRA;
surfaceFormat = SurfaceFormat::R8G8B8X8;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
} else {
format = LOCAL_GL_RGBA;
surfaceFormat = SurfaceFormat::B8G8R8X8;
type = LOCAL_GL_UNSIGNED_BYTE;
}
internalFormat = LOCAL_GL_RGBA;
break;
case SurfaceFormat::R8G8B8A8:
if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
// Upload our RGBA as BGRA, but store that the uploaded format is
// BGRA. (sample from R to get B)
format = LOCAL_GL_BGRA;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
surfaceFormat = SurfaceFormat::B8G8R8A8;
} else {
format = LOCAL_GL_RGBA;
type = LOCAL_GL_UNSIGNED_BYTE;
surfaceFormat = SurfaceFormat::R8G8B8A8;
}
internalFormat = LOCAL_GL_RGBA;
break;
case SurfaceFormat::R8G8B8X8:
// Treat RGBX surfaces as RGBA except for the surface
// format used.
if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
format = LOCAL_GL_BGRA;
type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
surfaceFormat = SurfaceFormat::B8G8R8X8;
} else {
format = LOCAL_GL_RGBA;
type = LOCAL_GL_UNSIGNED_BYTE;
surfaceFormat = SurfaceFormat::R8G8B8X8;
}
internalFormat = LOCAL_GL_RGBA;
break;
case SurfaceFormat::R5G6B5_UINT16:
internalFormat = format = LOCAL_GL_RGB;
type = LOCAL_GL_UNSIGNED_SHORT_5_6_5;
surfaceFormat = SurfaceFormat::R5G6B5_UINT16;
break;
case SurfaceFormat::A8:
internalFormat = format = LOCAL_GL_LUMINANCE;
type = LOCAL_GL_UNSIGNED_BYTE;
// We don't have a specific luminance shader
surfaceFormat = SurfaceFormat::A8;
break;
default:
NS_ASSERTION(false, "Unhandled image surface format!");
}
if (aOutUploadSize) {
*aOutUploadSize = 0;
}
if (aNeedInit || !CanUploadSubTextures(gl)) {
// If the texture needs initialized, or we are unable to
// upload sub textures, then initialize and upload the entire
// texture.
TexImage2DHelper(gl,
aTextureTarget,
0,
internalFormat,
aSize.width,
aSize.height,
aStride,
pixelSize,
0,
format,
type,
aData);
if (aOutUploadSize && aNeedInit) {
uint32_t texelSize = GetBytesPerTexel(internalFormat, type);
size_t numTexels = size_t(aSize.width) * size_t(aSize.height);
*aOutUploadSize += texelSize * numTexels;
}
} else {
// Upload each rect in the region to the texture
for (auto iter = aDstRegion.RectIter(); !iter.Done(); iter.Next()) {
const IntRect& rect = iter.Get();
const unsigned char* rectData =
aData + DataOffset(rect.TopLeft(), aStride, aFormat);
TexSubImage2DHelper(gl,
aTextureTarget,
0,
rect.x,
rect.y,
rect.Width(),
rect.Height(),
aStride,
pixelSize,
format,
type,
rectData);
}
}
return surfaceFormat;
}
