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Commit 9f6e888f by Nicolas Capens
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Provide a faster implementation for reading to RGBA8.

Bug 14643416 Change-Id: Ied833ac4c2fe6c185efe81adf47e63b29273920a Reviewed-on: https://swiftshader-review.googlesource.com/1702Reviewed-by: 's avatarNicolas Capens <capn@google.com> Tested-by: 's avatarNicolas Capens <capn@google.com>
parent dddc4ab7
Showing with 86 additions and 60 deletions
src/OpenGL/libGLES_CM/Context.cpp
...@@ -1856,17 +1856,27 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1856,17 +1856,27 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
unsigned char *source = (unsigned char*)renderTarget->lock(rect.x0, rect.y0, sw::LOCK_READONLY); unsigned char *source = (unsigned char*)renderTarget->lock(rect.x0, rect.y0, sw::LOCK_READONLY);
unsigned char *dest = (unsigned char*)pixels; unsigned char *dest = (unsigned char*)pixels;
unsigned short *dest16 = (unsigned short*)pixels;
int inputPitch = (int)renderTarget->getPitch(); int inputPitch = (int)renderTarget->getPitch();
for(int j = 0; j < rect.y1 - rect.y0; j++) for(int j = 0; j < rect.y1 - rect.y0; j++)
{ {
if(renderTarget->getInternalFormat() == sw::FORMAT_A8R8G8B8 && unsigned short *dest16 = (unsigned short*)dest;
format == GL_BGRA_EXT && type == GL_UNSIGNED_BYTE) unsigned int *dest32 = (unsigned int*)dest;
if(renderTarget->getInternalFormat() == sw::FORMAT_A8R8G8B8 &&
format == GL_RGBA && type == GL_UNSIGNED_BYTE)
{ {
// Fast path for EXT_read_format_bgra, given an RGBA source buffer for(int i = 0; i < rect.x1 - rect.x0; i++)
// Note that buffers with no alpha go through the slow path below {
memcpy(dest + j * outputPitch, source + j * inputPitch, (rect.x1 - rect.x0) * 4); unsigned int argb = *(unsigned int*)(source + 4 * i);
dest32[i] = (argb & 0xFF00FF00) | ((argb & 0x000000FF) << 16) | ((argb & 0x00FF0000) >> 16);
}
}
else if(renderTarget->getInternalFormat() == sw::FORMAT_A8R8G8B8 &&
format == GL_BGRA_EXT && type == GL_UNSIGNED_BYTE)
{
memcpy(dest, source, (rect.x1 - rect.x0) * 4);
} }
else else
{ {
...@@ -1881,7 +1891,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1881,7 +1891,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
{ {
case sw::FORMAT_R5G6B5: case sw::FORMAT_R5G6B5:
{ {
unsigned short rgb = *(unsigned short*)(source + 2 * i + j * inputPitch); unsigned short rgb = *(unsigned short*)(source + 2 * i);
a = 1.0f; a = 1.0f;
b = (rgb & 0x001F) * (1.0f / 0x001F); b = (rgb & 0x001F) * (1.0f / 0x001F);
...@@ -1891,7 +1901,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1891,7 +1901,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_A1R5G5B5: case sw::FORMAT_A1R5G5B5:
{ {
unsigned short argb = *(unsigned short*)(source + 2 * i + j * inputPitch); unsigned short argb = *(unsigned short*)(source + 2 * i);
a = (argb & 0x8000) ? 1.0f : 0.0f; a = (argb & 0x8000) ? 1.0f : 0.0f;
b = (argb & 0x001F) * (1.0f / 0x001F); b = (argb & 0x001F) * (1.0f / 0x001F);
...@@ -1901,7 +1911,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1901,7 +1911,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_A8R8G8B8: case sw::FORMAT_A8R8G8B8:
{ {
unsigned int argb = *(unsigned int*)(source + 4 * i + j * inputPitch); unsigned int argb = *(unsigned int*)(source + 4 * i);
a = (argb & 0xFF000000) * (1.0f / 0xFF000000); a = (argb & 0xFF000000) * (1.0f / 0xFF000000);
b = (argb & 0x000000FF) * (1.0f / 0x000000FF); b = (argb & 0x000000FF) * (1.0f / 0x000000FF);
...@@ -1911,7 +1921,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1911,7 +1921,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_X8R8G8B8: case sw::FORMAT_X8R8G8B8:
{ {
unsigned int xrgb = *(unsigned int*)(source + 4 * i + j * inputPitch); unsigned int xrgb = *(unsigned int*)(source + 4 * i);
a = 1.0f; a = 1.0f;
b = (xrgb & 0x000000FF) * (1.0f / 0x000000FF); b = (xrgb & 0x000000FF) * (1.0f / 0x000000FF);
...@@ -1921,7 +1931,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1921,7 +1931,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_A2R10G10B10: case sw::FORMAT_A2R10G10B10:
{ {
unsigned int argb = *(unsigned int*)(source + 4 * i + j * inputPitch); unsigned int argb = *(unsigned int*)(source + 4 * i);
a = (argb & 0xC0000000) * (1.0f / 0xC0000000); a = (argb & 0xC0000000) * (1.0f / 0xC0000000);
b = (argb & 0x000003FF) * (1.0f / 0x000003FF); b = (argb & 0x000003FF) * (1.0f / 0x000003FF);
...@@ -1931,18 +1941,18 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1931,18 +1941,18 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_A32B32G32R32F: case sw::FORMAT_A32B32G32R32F:
{ {
r = *((float*)(source + 16 * i + j * inputPitch) + 0); r = *((float*)(source + 16 * i) + 0);
g = *((float*)(source + 16 * i + j * inputPitch) + 1); g = *((float*)(source + 16 * i) + 1);
b = *((float*)(source + 16 * i + j * inputPitch) + 2); b = *((float*)(source + 16 * i) + 2);
a = *((float*)(source + 16 * i + j * inputPitch) + 3); a = *((float*)(source + 16 * i) + 3);
} }
break; break;
case sw::FORMAT_A16B16G16R16F: case sw::FORMAT_A16B16G16R16F:
{ {
r = (float)*((sw::half*)(source + 8 * i + j * inputPitch) + 0); r = (float)*((sw::half*)(source + 8 * i) + 0);
g = (float)*((sw::half*)(source + 8 * i + j * inputPitch) + 1); g = (float)*((sw::half*)(source + 8 * i) + 1);
b = (float)*((sw::half*)(source + 8 * i + j * inputPitch) + 2); b = (float)*((sw::half*)(source + 8 * i) + 2);
a = (float)*((sw::half*)(source + 8 * i + j * inputPitch) + 3); a = (float)*((sw::half*)(source + 8 * i) + 3);
} }
break; break;
default: default:
...@@ -1956,10 +1966,10 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1956,10 +1966,10 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
switch(type) switch(type)
{ {
case GL_UNSIGNED_BYTE: case GL_UNSIGNED_BYTE:
dest[4 * i + j * outputPitch + 0] = (unsigned char)(255 * r + 0.5f); dest[4 * i + 0] = (unsigned char)(255 * r + 0.5f);
dest[4 * i + j * outputPitch + 1] = (unsigned char)(255 * g + 0.5f); dest[4 * i + 1] = (unsigned char)(255 * g + 0.5f);
dest[4 * i + j * outputPitch + 2] = (unsigned char)(255 * b + 0.5f); dest[4 * i + 2] = (unsigned char)(255 * b + 0.5f);
dest[4 * i + j * outputPitch + 3] = (unsigned char)(255 * a + 0.5f); dest[4 * i + 3] = (unsigned char)(255 * a + 0.5f);
break; break;
default: UNREACHABLE(); default: UNREACHABLE();
} }
...@@ -1968,10 +1978,10 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1968,10 +1978,10 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
switch(type) switch(type)
{ {
case GL_UNSIGNED_BYTE: case GL_UNSIGNED_BYTE:
dest[4 * i + j * outputPitch + 0] = (unsigned char)(255 * b + 0.5f); dest[4 * i + 0] = (unsigned char)(255 * b + 0.5f);
dest[4 * i + j * outputPitch + 1] = (unsigned char)(255 * g + 0.5f); dest[4 * i + 1] = (unsigned char)(255 * g + 0.5f);
dest[4 * i + j * outputPitch + 2] = (unsigned char)(255 * r + 0.5f); dest[4 * i + 2] = (unsigned char)(255 * r + 0.5f);
dest[4 * i + j * outputPitch + 3] = (unsigned char)(255 * a + 0.5f); dest[4 * i + 3] = (unsigned char)(255 * a + 0.5f);
break; break;
case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT: case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT:
// According to the desktop GL spec in the "Transfer of Pixel Rectangles" section // According to the desktop GL spec in the "Transfer of Pixel Rectangles" section
...@@ -1981,7 +1991,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1981,7 +1991,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
// | 4th | 3rd | 2nd | 1st component | // | 4th | 3rd | 2nd | 1st component |
// -------------------------------------------------------------------------------- // --------------------------------------------------------------------------------
// in the case of BGRA_EXT, B is the first component, G the second, and so forth. // in the case of BGRA_EXT, B is the first component, G the second, and so forth.
dest16[i + j * outputPitch / sizeof(unsigned short)] = dest16[i] =
((unsigned short)(15 * a + 0.5f) << 12)| ((unsigned short)(15 * a + 0.5f) << 12)|
((unsigned short)(15 * r + 0.5f) << 8) | ((unsigned short)(15 * r + 0.5f) << 8) |
((unsigned short)(15 * g + 0.5f) << 4) | ((unsigned short)(15 * g + 0.5f) << 4) |
...@@ -1995,7 +2005,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -1995,7 +2005,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
// | 4th | 3rd | 2nd | 1st component | // | 4th | 3rd | 2nd | 1st component |
// -------------------------------------------------------------------------------- // --------------------------------------------------------------------------------
// in the case of BGRA_EXT, B is the first component, G the second, and so forth. // in the case of BGRA_EXT, B is the first component, G the second, and so forth.
dest16[i + j * outputPitch / sizeof(unsigned short)] = dest16[i] =
((unsigned short)( a + 0.5f) << 15) | ((unsigned short)( a + 0.5f) << 15) |
((unsigned short)(31 * r + 0.5f) << 10) | ((unsigned short)(31 * r + 0.5f) << 10) |
((unsigned short)(31 * g + 0.5f) << 5) | ((unsigned short)(31 * g + 0.5f) << 5) |
...@@ -2008,7 +2018,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2008,7 +2018,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
switch(type) switch(type)
{ {
case GL_UNSIGNED_SHORT_5_6_5: case GL_UNSIGNED_SHORT_5_6_5:
dest16[i + j * outputPitch / sizeof(unsigned short)] = dest16[i] =
((unsigned short)(31 * b + 0.5f) << 0) | ((unsigned short)(31 * b + 0.5f) << 0) |
((unsigned short)(63 * g + 0.5f) << 5) | ((unsigned short)(63 * g + 0.5f) << 5) |
((unsigned short)(31 * r + 0.5f) << 11); ((unsigned short)(31 * r + 0.5f) << 11);
...@@ -2020,6 +2030,9 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2020,6 +2030,9 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
} }
} }
} }
source += inputPitch;
dest += outputPitch;
} }
renderTarget->unlock(); renderTarget->unlock();
......
src/OpenGL/libGLESv2/Context.cpp
...@@ -2189,17 +2189,27 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2189,17 +2189,27 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
unsigned char *source = (unsigned char*)renderTarget->lock(rect.x0, rect.y0, sw::LOCK_READONLY); unsigned char *source = (unsigned char*)renderTarget->lock(rect.x0, rect.y0, sw::LOCK_READONLY);
unsigned char *dest = (unsigned char*)pixels; unsigned char *dest = (unsigned char*)pixels;
unsigned short *dest16 = (unsigned short*)pixels;
int inputPitch = (int)renderTarget->getPitch(); int inputPitch = (int)renderTarget->getPitch();
for(int j = 0; j < rect.y1 - rect.y0; j++) for(int j = 0; j < rect.y1 - rect.y0; j++)
{ {
if(renderTarget->getInternalFormat() == sw::FORMAT_A8R8G8B8 && unsigned short *dest16 = (unsigned short*)dest;
format == GL_BGRA_EXT && type == GL_UNSIGNED_BYTE) unsigned int *dest32 = (unsigned int*)dest;
if(renderTarget->getInternalFormat() == sw::FORMAT_A8R8G8B8 &&
format == GL_RGBA && type == GL_UNSIGNED_BYTE)
{ {
// Fast path for EXT_read_format_bgra, given an RGBA source buffer for(int i = 0; i < rect.x1 - rect.x0; i++)
// Note that buffers with no alpha go through the slow path below {
memcpy(dest + j * outputPitch, source + j * inputPitch, (rect.x1 - rect.x0) * 4); unsigned int argb = *(unsigned int*)(source + 4 * i);
dest32[i] = (argb & 0xFF00FF00) | ((argb & 0x000000FF) << 16) | ((argb & 0x00FF0000) >> 16);
}
}
else if(renderTarget->getInternalFormat() == sw::FORMAT_A8R8G8B8 &&
format == GL_BGRA_EXT && type == GL_UNSIGNED_BYTE)
{
memcpy(dest, source, (rect.x1 - rect.x0) * 4);
} }
else else
{ {
...@@ -2214,7 +2224,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2214,7 +2224,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
{ {
case sw::FORMAT_R5G6B5: case sw::FORMAT_R5G6B5:
{ {
unsigned short rgb = *(unsigned short*)(source + 2 * i + j * inputPitch); unsigned short rgb = *(unsigned short*)(source + 2 * i);
a = 1.0f; a = 1.0f;
b = (rgb & 0x001F) * (1.0f / 0x001F); b = (rgb & 0x001F) * (1.0f / 0x001F);
...@@ -2224,7 +2234,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2224,7 +2234,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_A1R5G5B5: case sw::FORMAT_A1R5G5B5:
{ {
unsigned short argb = *(unsigned short*)(source + 2 * i + j * inputPitch); unsigned short argb = *(unsigned short*)(source + 2 * i);
a = (argb & 0x8000) ? 1.0f : 0.0f; a = (argb & 0x8000) ? 1.0f : 0.0f;
b = (argb & 0x001F) * (1.0f / 0x001F); b = (argb & 0x001F) * (1.0f / 0x001F);
...@@ -2234,7 +2244,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2234,7 +2244,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_A8R8G8B8: case sw::FORMAT_A8R8G8B8:
{ {
unsigned int argb = *(unsigned int*)(source + 4 * i + j * inputPitch); unsigned int argb = *(unsigned int*)(source + 4 * i);
a = (argb & 0xFF000000) * (1.0f / 0xFF000000); a = (argb & 0xFF000000) * (1.0f / 0xFF000000);
b = (argb & 0x000000FF) * (1.0f / 0x000000FF); b = (argb & 0x000000FF) * (1.0f / 0x000000FF);
...@@ -2244,7 +2254,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2244,7 +2254,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_X8R8G8B8: case sw::FORMAT_X8R8G8B8:
{ {
unsigned int xrgb = *(unsigned int*)(source + 4 * i + j * inputPitch); unsigned int xrgb = *(unsigned int*)(source + 4 * i);
a = 1.0f; a = 1.0f;
b = (xrgb & 0x000000FF) * (1.0f / 0x000000FF); b = (xrgb & 0x000000FF) * (1.0f / 0x000000FF);
...@@ -2254,7 +2264,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2254,7 +2264,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_A2R10G10B10: case sw::FORMAT_A2R10G10B10:
{ {
unsigned int argb = *(unsigned int*)(source + 4 * i + j * inputPitch); unsigned int argb = *(unsigned int*)(source + 4 * i);
a = (argb & 0xC0000000) * (1.0f / 0xC0000000); a = (argb & 0xC0000000) * (1.0f / 0xC0000000);
b = (argb & 0x000003FF) * (1.0f / 0x000003FF); b = (argb & 0x000003FF) * (1.0f / 0x000003FF);
...@@ -2264,18 +2274,18 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2264,18 +2274,18 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
break; break;
case sw::FORMAT_A32B32G32R32F: case sw::FORMAT_A32B32G32R32F:
{ {
r = *((float*)(source + 16 * i + j * inputPitch) + 0); r = *((float*)(source + 16 * i) + 0);
g = *((float*)(source + 16 * i + j * inputPitch) + 1); g = *((float*)(source + 16 * i) + 1);
b = *((float*)(source + 16 * i + j * inputPitch) + 2); b = *((float*)(source + 16 * i) + 2);
a = *((float*)(source + 16 * i + j * inputPitch) + 3); a = *((float*)(source + 16 * i) + 3);
} }
break; break;
case sw::FORMAT_A16B16G16R16F: case sw::FORMAT_A16B16G16R16F:
{ {
r = (float)*((sw::half*)(source + 8 * i + j * inputPitch) + 0); r = (float)*((sw::half*)(source + 8 * i) + 0);
g = (float)*((sw::half*)(source + 8 * i + j * inputPitch) + 1); g = (float)*((sw::half*)(source + 8 * i) + 1);
b = (float)*((sw::half*)(source + 8 * i + j * inputPitch) + 2); b = (float)*((sw::half*)(source + 8 * i) + 2);
a = (float)*((sw::half*)(source + 8 * i + j * inputPitch) + 3); a = (float)*((sw::half*)(source + 8 * i) + 3);
} }
break; break;
default: default:
...@@ -2289,10 +2299,10 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2289,10 +2299,10 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
switch(type) switch(type)
{ {
case GL_UNSIGNED_BYTE: case GL_UNSIGNED_BYTE:
dest[4 * i + j * outputPitch + 0] = (unsigned char)(255 * r + 0.5f); dest[4 * i + 0] = (unsigned char)(255 * r + 0.5f);
dest[4 * i + j * outputPitch + 1] = (unsigned char)(255 * g + 0.5f); dest[4 * i + 1] = (unsigned char)(255 * g + 0.5f);
dest[4 * i + j * outputPitch + 2] = (unsigned char)(255 * b + 0.5f); dest[4 * i + 2] = (unsigned char)(255 * b + 0.5f);
dest[4 * i + j * outputPitch + 3] = (unsigned char)(255 * a + 0.5f); dest[4 * i + 3] = (unsigned char)(255 * a + 0.5f);
break; break;
default: UNREACHABLE(); default: UNREACHABLE();
} }
...@@ -2301,10 +2311,10 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2301,10 +2311,10 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
switch(type) switch(type)
{ {
case GL_UNSIGNED_BYTE: case GL_UNSIGNED_BYTE:
dest[4 * i + j * outputPitch + 0] = (unsigned char)(255 * b + 0.5f); dest[4 * i + 0] = (unsigned char)(255 * b + 0.5f);
dest[4 * i + j * outputPitch + 1] = (unsigned char)(255 * g + 0.5f); dest[4 * i + 1] = (unsigned char)(255 * g + 0.5f);
dest[4 * i + j * outputPitch + 2] = (unsigned char)(255 * r + 0.5f); dest[4 * i + 2] = (unsigned char)(255 * r + 0.5f);
dest[4 * i + j * outputPitch + 3] = (unsigned char)(255 * a + 0.5f); dest[4 * i + 3] = (unsigned char)(255 * a + 0.5f);
break; break;
case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT: case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT:
// According to the desktop GL spec in the "Transfer of Pixel Rectangles" section // According to the desktop GL spec in the "Transfer of Pixel Rectangles" section
...@@ -2314,7 +2324,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2314,7 +2324,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
// | 4th | 3rd | 2nd | 1st component | // | 4th | 3rd | 2nd | 1st component |
// -------------------------------------------------------------------------------- // --------------------------------------------------------------------------------
// in the case of BGRA_EXT, B is the first component, G the second, and so forth. // in the case of BGRA_EXT, B is the first component, G the second, and so forth.
dest16[i + j * outputPitch / sizeof(unsigned short)] = dest16[i] =
((unsigned short)(15 * a + 0.5f) << 12)| ((unsigned short)(15 * a + 0.5f) << 12)|
((unsigned short)(15 * r + 0.5f) << 8) | ((unsigned short)(15 * r + 0.5f) << 8) |
((unsigned short)(15 * g + 0.5f) << 4) | ((unsigned short)(15 * g + 0.5f) << 4) |
...@@ -2328,7 +2338,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2328,7 +2338,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
// | 4th | 3rd | 2nd | 1st component | // | 4th | 3rd | 2nd | 1st component |
// -------------------------------------------------------------------------------- // --------------------------------------------------------------------------------
// in the case of BGRA_EXT, B is the first component, G the second, and so forth. // in the case of BGRA_EXT, B is the first component, G the second, and so forth.
dest16[i + j * outputPitch / sizeof(unsigned short)] = dest16[i] =
((unsigned short)( a + 0.5f) << 15) | ((unsigned short)( a + 0.5f) << 15) |
((unsigned short)(31 * r + 0.5f) << 10) | ((unsigned short)(31 * r + 0.5f) << 10) |
((unsigned short)(31 * g + 0.5f) << 5) | ((unsigned short)(31 * g + 0.5f) << 5) |
...@@ -2341,7 +2351,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2341,7 +2351,7 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
switch(type) switch(type)
{ {
case GL_UNSIGNED_SHORT_5_6_5: case GL_UNSIGNED_SHORT_5_6_5:
dest16[i + j * outputPitch / sizeof(unsigned short)] = dest16[i] =
((unsigned short)(31 * b + 0.5f) << 0) | ((unsigned short)(31 * b + 0.5f) << 0) |
((unsigned short)(63 * g + 0.5f) << 5) | ((unsigned short)(63 * g + 0.5f) << 5) |
((unsigned short)(31 * r + 0.5f) << 11); ((unsigned short)(31 * r + 0.5f) << 11);
...@@ -2353,6 +2363,9 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height, ...@@ -2353,6 +2363,9 @@ void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
} }
} }
} }
source += inputPitch;
dest += outputPitch;
} }
renderTarget->unlock(); renderTarget->unlock();
......
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