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Transplanet: Bug 724094 - Use fTexImage2D instead of TexSubImage2D when uploading full width. r=ajuma

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--HG--
extra : rebase_source : 94595465a2b3eb3140f11e932a32575629a266dc
This commit is contained in:
Benoit Girard 2012-02-06 15:15:36 -05:00
parent f9ebf5ebe2
commit da156115f9
1 changed files with 71 additions and 84 deletions
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155
gfx/gl/GLContext.cpp
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@ -2122,9 +2122,9 @@ static GLint GetAddressAlignment(ptrdiff_t aAddress)
}
void
GLContext::TexImage2D(GLenum target, GLint level, GLint internalformat,
GLContext::TexImage2D(GLenum target, GLint level, GLint internalformat,
GLsizei width, GLsizei height, GLsizei stride,
GLint pixelsize, GLint border, GLenum format,
GLint pixelsize, GLint border, GLenum format,
GLenum type, const GLvoid *pixels)
{
#ifdef USE_GLES2
@ -2155,7 +2155,7 @@ GLContext::TexImage2D(GLenum target, GLint level, GLint internalformat,
type,
pixels);
#else
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
int rowLength = stride/pixelsize;
@ -2175,17 +2175,32 @@ GLContext::TexImage2D(GLenum target, GLint level, GLint internalformat,
}
void
GLContext::TexSubImage2D(GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLContext::TexSubImage2D(GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height, GLsizei stride,
GLint pixelsize, GLenum format,
GLint pixelsize, GLenum format,
GLenum type, const GLvoid* pixels)
{
#ifdef USE_GLES2
if (IsExtensionSupported(EXT_unpack_subimage)) {
if (stride == width * pixelsize) {
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height,
format,
type,
pixels);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
} else if (IsExtensionSupported(EXT_unpack_subimage)) {
TexSubImage2DWithUnpackSubimageGLES(target, level, xoffset, yoffset,
width, height, stride,
pixelsize, format, type, pixels);
} else {
TexSubImage2DWithoutUnpackSubimage(target, level, xoffset, yoffset,
width, height, stride,
@ -2222,45 +2237,32 @@ GLContext::TexSubImage2DWithUnpackSubimageGLES(GLenum target, GLint level,
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
if (stride == width * pixelsize) {
// No need to use GL_UNPACK_ROW_LENGTH.
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height,
format,
type,
pixels);
} else {
// When using GL_UNPACK_ROW_LENGTH, we need to work around a Tegra
// driver crash where the driver apparently tries to read
// (stride - width * pixelsize) bytes past the end of the last input
// row. We only upload the first height-1 rows using GL_UNPACK_ROW_LENGTH,
// and then we upload the final row separately. See bug 697990.
int rowLength = stride/pixelsize;
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height-1,
format,
type,
pixels);
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
fTexSubImage2D(target,
level,
xoffset,
yoffset+height-1,
width,
1,
format,
type,
(const unsigned char *)pixels+(height-1)*stride);
}
// When using GL_UNPACK_ROW_LENGTH, we need to work around a Tegra
// driver crash where the driver apparently tries to read
// (stride - width * pixelsize) bytes past the end of the last input
// row. We only upload the first height-1 rows using GL_UNPACK_ROW_LENGTH,
// and then we upload the final row separately. See bug 697990.
int rowLength = stride/pixelsize;
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height-1,
format,
type,
pixels);
fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
fTexSubImage2D(target,
level,
xoffset,
yoffset+height-1,
width,
1,
format,
type,
(const unsigned char *)pixels+(height-1)*stride);
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
}
@ -2272,48 +2274,33 @@ GLContext::TexSubImage2DWithoutUnpackSubimage(GLenum target, GLint level,
GLenum format, GLenum type,
const GLvoid* pixels)
{
if (stride == width * pixelsize) {
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)pixels),
GetAddressAlignment((ptrdiff_t)stride)));
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height,
format,
type,
pixels);
} else {
// Not using the whole row of texture data and GL_UNPACK_ROW_LENGTH
// isn't supported. We make a copy of the texture data we're using,
// such that we're using the whole row of data in the copy. This turns
// out to be more efficient than uploading row-by-row; see bug 698197.
unsigned char *newPixels = new unsigned char[width*height*pixelsize];
unsigned char *rowDest = newPixels;
const unsigned char *rowSource = (const unsigned char *)pixels;
for (int h = 0; h < height; h++) {
// Not using the whole row of texture data and GL_UNPACK_ROW_LENGTH
// isn't supported. We make a copy of the texture data we're using,
// such that we're using the whole row of data in the copy. This turns
// out to be more efficient than uploading row-by-row; see bug 698197.
unsigned char *newPixels = new unsigned char[width*height*pixelsize];
unsigned char *rowDest = newPixels;
const unsigned char *rowSource = (const unsigned char *)pixels;
for (int h = 0; h < height; h++) {
memcpy(rowDest, rowSource, width*pixelsize);
rowDest += width*pixelsize;
rowSource += stride;
}
stride = width*pixelsize;
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)newPixels),
GetAddressAlignment((ptrdiff_t)stride)));
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height,
format,
type,
newPixels);
delete [] newPixels;
}
stride = width*pixelsize;
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
NS_MIN(GetAddressAlignment((ptrdiff_t)newPixels),
GetAddressAlignment((ptrdiff_t)stride)));
fTexSubImage2D(target,
level,
xoffset,
yoffset,
width,
height,
format,
type,
newPixels);
delete [] newPixels;
fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
}