gl::Error FramebufferD3D::readPixels(const gl::Context *context,
const gl::Rectangle &origArea,
GLenum format,
GLenum type,
void *pixels)
{
// Clip read area to framebuffer.
const gl::Extents fbSize = getState().getReadAttachment()->getSize();
const gl::Rectangle fbRect(0, 0, fbSize.width, fbSize.height);
gl::Rectangle area;
if (!ClipRectangle(origArea, fbRect, &area))
{
// nothing to read
return gl::NoError();
}
const gl::PixelPackState &packState = context->getGLState().getPackState();
const gl::InternalFormat &sizedFormatInfo = gl::GetInternalFormatInfo(format, type);
GLuint outputPitch = 0;
ANGLE_TRY_RESULT(sizedFormatInfo.computeRowPitch(type, origArea.width, packState.alignment,
packState.rowLength),
outputPitch);
GLuint outputSkipBytes = 0;
ANGLE_TRY_RESULT(sizedFormatInfo.computeSkipBytes(outputPitch, 0, packState, false),
outputSkipBytes);
outputSkipBytes +=
(area.x - origArea.x) * sizedFormatInfo.pixelBytes + (area.y - origArea.y) * outputPitch;
return readPixelsImpl(context, area, format, type, outputPitch, packState,
reinterpret_cast<uint8_t *>(pixels) + outputSkipBytes);
}
gl::Error FramebufferD3D::readPixels(const gl::State &state, const gl::Rectangle &area, GLenum format, GLenum type, GLvoid *pixels) const
{
const gl::PixelPackState &packState = state.getPackState();
GLenum sizedInternalFormat = gl::GetSizedInternalFormat(format, type);
const gl::InternalFormat &sizedFormatInfo = gl::GetInternalFormatInfo(sizedInternalFormat);
GLuint outputPitch =
sizedFormatInfo.computeRowPitch(type, area.width, packState.alignment, packState.rowLength);
GLsizei outputSkipBytes = sizedFormatInfo.computeSkipPixels(
outputPitch, 0, 0, packState.skipRows, packState.skipPixels);
return readPixelsImpl(area, format, type, outputPitch, packState,
reinterpret_cast<uint8_t *>(pixels) + outputSkipBytes);
}
angle::Result FramebufferD3D::readPixels(const gl::Context *context,
const gl::Rectangle &area,
GLenum format,
GLenum type,
void *pixels)
{
// Clip read area to framebuffer.
const gl::Extents fbSize = getState().getReadAttachment()->getSize();
const gl::Rectangle fbRect(0, 0, fbSize.width, fbSize.height);
gl::Rectangle clippedArea;
if (!ClipRectangle(area, fbRect, &clippedArea))
{
// nothing to read
return angle::Result::Continue;
}
const gl::PixelPackState &packState = context->getState().getPackState();
const gl::InternalFormat &sizedFormatInfo = gl::GetInternalFormatInfo(format, type);
ContextD3D *contextD3D = GetImplAs<ContextD3D>(context);
GLuint outputPitch = 0;
ANGLE_CHECK_GL_MATH(contextD3D,
sizedFormatInfo.computeRowPitch(type, area.width, packState.alignment,
packState.rowLength, &outputPitch));
GLuint outputSkipBytes = 0;
ANGLE_CHECK_GL_MATH(contextD3D, sizedFormatInfo.computeSkipBytes(
type, outputPitch, 0, packState, false, &outputSkipBytes));
outputSkipBytes += (clippedArea.x - area.x) * sizedFormatInfo.pixelBytes +
(clippedArea.y - area.y) * outputPitch;
return readPixelsImpl(context, clippedArea, format, type, outputPitch, packState,
static_cast<uint8_t *>(pixels) + outputSkipBytes);
}
