void GLTextureBuffer::blitFromTexture(GLTextureBuffer* src, const PixelVolume& srcBox, const PixelVolume& dstBox)
{
if (src->mMultisampleCount > 0 && mMultisampleCount == 0) // Resolving MS texture
{
if (mTarget != GL_TEXTURE_2D || mTarget != GL_TEXTURE_2D_MULTISAMPLE)
BS_EXCEPT(InvalidParametersException, "Non-2D multisampled texture not supported.");
GLint currentFBO = 0;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, ¤tFBO);
GLuint readFBO = GLRTTManager::instance().getBlitReadFBO();
GLuint drawFBO = GLRTTManager::instance().getBlitDrawFBO();
// Attach source texture
glBindFramebuffer(GL_FRAMEBUFFER, readFBO);
src->bindToFramebuffer(0, 0, true);
// Attach destination texture
glBindFramebuffer(GL_FRAMEBUFFER, drawFBO);
bindToFramebuffer(0, 0, true);
// Perform blit
glBindFramebuffer(GL_READ_FRAMEBUFFER, readFBO);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, drawFBO);
glReadBuffer(GL_COLOR_ATTACHMENT0);
glDrawBuffer(GL_COLOR_ATTACHMENT0);
glBlitFramebuffer(srcBox.left, srcBox.top, srcBox.right, srcBox.bottom,
dstBox.left, dstBox.top, dstBox.right, dstBox.bottom, GL_COLOR_BUFFER_BIT, GL_NEAREST);
// Restore the previously bound FBO
glBindFramebuffer(GL_FRAMEBUFFER, currentFBO);
}
else // Just plain copy
{
if (mMultisampleCount != src->mMultisampleCount)
BS_EXCEPT(InvalidParametersException, "When copying textures their multisample counts must match.");
if (mTarget == GL_TEXTURE_3D) // 3D textures can't have arrays so their Z coordinate is handled differently
{
glCopyImageSubData(src->mTextureID, src->mTarget, src->mLevel, srcBox.left, srcBox.top, srcBox.front,
mTextureID, mTarget, mLevel, dstBox.left, dstBox.top, dstBox.front, srcBox.getWidth(), srcBox.getHeight(), srcBox.getDepth());
}
else
{
glCopyImageSubData(src->mTextureID, src->mTarget, src->mLevel, srcBox.left, srcBox.top, src->mFace,
mTextureID, mTarget, mLevel, dstBox.left, dstBox.top, mFace, srcBox.getWidth(), srcBox.getHeight(), 1);
}
}
}
void GLTextureBuffer::upload(const PixelData &data, const PixelVolume &dest)
{
if((mUsage & TU_RENDERTARGET) != 0)
BS_EXCEPT(NotImplementedException, "Writing to render texture from CPU not supported.");
if ((mUsage & TU_DEPTHSTENCIL) != 0)
BS_EXCEPT(NotImplementedException, "Writing to depth stencil texture from CPU not supported.");
glBindTexture( mTarget, mTextureID );
if(PixelUtil::isCompressed(data.getFormat()))
{
if(data.getFormat() != mFormat || !data.isConsecutive())
BS_EXCEPT(InvalidParametersException,
"Compressed images must be consecutive, in the source format");
GLenum format = GLPixelUtil::getClosestGLInternalFormat(mFormat);
switch(mTarget) {
case GL_TEXTURE_1D:
if (dest.left == 0)
{
glCompressedTexImage1D(GL_TEXTURE_1D, mLevel,
format,
dest.getWidth(),
0,
data.getConsecutiveSize(),
data.getData());
}
else
{
glCompressedTexSubImage1D(GL_TEXTURE_1D, mLevel,
dest.left,
dest.getWidth(),
format, data.getConsecutiveSize(),
data.getData());
}
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_CUBE_MAP:
if (dest.left == 0 && dest.top == 0)
{
glCompressedTexImage2D(mFaceTarget, mLevel,
format,
dest.getWidth(),
dest.getHeight(),
0,
data.getConsecutiveSize(),
data.getData());
}
else
{
glCompressedTexSubImage2D(mFaceTarget, mLevel,
dest.left, dest.top,
dest.getWidth(), dest.getHeight(),
format, data.getConsecutiveSize(),
data.getData());
}
break;
case GL_TEXTURE_3D:
if (dest.left == 0 && dest.top == 0 && dest.front == 0)
{
glCompressedTexImage3D(GL_TEXTURE_3D, mLevel,
format,
dest.getWidth(),
dest.getHeight(),
dest.getDepth(),
0,
data.getConsecutiveSize(),
data.getData());
}
else
{
glCompressedTexSubImage3D(GL_TEXTURE_3D, mLevel,
dest.left, dest.top, dest.front,
dest.getWidth(), dest.getHeight(), dest.getDepth(),
format, data.getConsecutiveSize(),
data.getData());
}
break;
}
}
else
{
if(data.getWidth() != data.getRowPitch())
glPixelStorei(GL_UNPACK_ROW_LENGTH, data.getRowPitch());
if(data.getHeight()*data.getWidth() != data.getSlicePitch())
glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, (data.getSlicePitch()/data.getWidth()));
if(data.getLeft() > 0 || data.getTop() > 0 || data.getFront() > 0)
glPixelStorei(GL_UNPACK_SKIP_PIXELS, data.getLeft() + data.getRowPitch() * data.getTop() + data.getSlicePitch() * data.getFront());
if((data.getWidth()*PixelUtil::getNumElemBytes(data.getFormat())) & 3)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
switch(mTarget) {
case GL_TEXTURE_1D:
glTexSubImage1D(GL_TEXTURE_1D, mLevel,
dest.left,
dest.getWidth(),
GLPixelUtil::getGLOriginFormat(data.getFormat()), GLPixelUtil::getGLOriginDataType(data.getFormat()),
data.getData());
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_CUBE_MAP:
glTexSubImage2D(mFaceTarget, mLevel,
dest.left, dest.top,
dest.getWidth(), dest.getHeight(),
GLPixelUtil::getGLOriginFormat(data.getFormat()), GLPixelUtil::getGLOriginDataType(data.getFormat()),
data.getData());
break;
case GL_TEXTURE_3D:
glTexSubImage3D(
GL_TEXTURE_3D, mLevel,
dest.left, dest.top, dest.front,
dest.getWidth(), dest.getHeight(), dest.getDepth(),
GLPixelUtil::getGLOriginFormat(data.getFormat()), GLPixelUtil::getGLOriginDataType(data.getFormat()),
data.getData());
break;
}
}
// Restore defaults
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
BS_INC_RENDER_STAT_CAT(ResWrite, RenderStatObject_Texture);
}
void GLTextureBuffer::upload(const PixelData& data, const PixelVolume& dest)
{
if ((mUsage & TU_DEPTHSTENCIL) != 0)
{
LOGERR("Writing to depth stencil texture from CPU not supported.");
return;
}
glBindTexture(mTarget, mTextureID);
BS_CHECK_GL_ERROR();
if(PixelUtil::isCompressed(data.getFormat()))
{
// Block-compressed data cannot be smaller than 4x4, and must be a multiple of 4
const UINT32 actualWidth = Math::divideAndRoundUp(std::max(mWidth, 4U), 4U) * 4U;
const UINT32 actualHeight = Math::divideAndRoundUp(std::max(mHeight, 4U), 4U) * 4U;
const UINT32 expectedRowPitch = actualWidth;
const UINT32 expectedSlicePitch = actualWidth * actualHeight;
const bool isConsecutive = data.getRowPitch() == expectedRowPitch && data.getSlicePitch() == expectedSlicePitch;
if (data.getFormat() != mFormat || !isConsecutive)
{
LOGERR("Compressed images must be consecutive, in the source format");
return;
}
GLenum format = GLPixelUtil::getGLInternalFormat(mFormat, mHwGamma);
switch(mTarget)
{
case GL_TEXTURE_1D:
glCompressedTexSubImage1D(GL_TEXTURE_1D, mLevel,
dest.left,
dest.getWidth(),
format, data.getConsecutiveSize(),
data.getData());
BS_CHECK_GL_ERROR();
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_CUBE_MAP:
glCompressedTexSubImage2D(mFaceTarget, mLevel,
dest.left, dest.top,
dest.getWidth(), dest.getHeight(),
format, data.getConsecutiveSize(),
data.getData());
BS_CHECK_GL_ERROR();
break;
case GL_TEXTURE_3D:
glCompressedTexSubImage3D(GL_TEXTURE_3D, mLevel,
dest.left, dest.top, dest.front,
dest.getWidth(), dest.getHeight(), dest.getDepth(),
format, data.getConsecutiveSize(),
data.getData());
BS_CHECK_GL_ERROR();
break;
default:
break;
}
}
else
{
if (data.getWidth() != data.getRowPitch())
{
glPixelStorei(GL_UNPACK_ROW_LENGTH, data.getRowPitch());
BS_CHECK_GL_ERROR();
}
if (data.getHeight()*data.getWidth() != data.getSlicePitch())
{
glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, (data.getSlicePitch() / data.getWidth()));
BS_CHECK_GL_ERROR();
}
if (data.getLeft() > 0 || data.getTop() > 0 || data.getFront() > 0)
{
glPixelStorei(
GL_UNPACK_SKIP_PIXELS,
data.getLeft() + data.getRowPitch() * data.getTop() + data.getSlicePitch() * data.getFront());
BS_CHECK_GL_ERROR();
}
if ((data.getWidth()*PixelUtil::getNumElemBytes(data.getFormat())) & 3)
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
BS_CHECK_GL_ERROR();
}
switch(mTarget) {
case GL_TEXTURE_1D:
glTexSubImage1D(GL_TEXTURE_1D, mLevel,
dest.left,
dest.getWidth(),
GLPixelUtil::getGLOriginFormat(data.getFormat()), GLPixelUtil::getGLOriginDataType(data.getFormat()),
data.getData());
BS_CHECK_GL_ERROR();
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_CUBE_MAP:
glTexSubImage2D(mFaceTarget, mLevel,
dest.left, dest.top,
dest.getWidth(), dest.getHeight(),
GLPixelUtil::getGLOriginFormat(data.getFormat()), GLPixelUtil::getGLOriginDataType(data.getFormat()),
data.getData());
BS_CHECK_GL_ERROR();
break;
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_3D:
glTexSubImage3D(
mTarget, mLevel,
dest.left, dest.top, dest.front,
dest.getWidth(), dest.getHeight(), dest.getDepth(),
GLPixelUtil::getGLOriginFormat(data.getFormat()), GLPixelUtil::getGLOriginDataType(data.getFormat()),
data.getData());
BS_CHECK_GL_ERROR();
break;
}
}
// Restore defaults
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
BS_CHECK_GL_ERROR();
glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0);
BS_CHECK_GL_ERROR();
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
BS_CHECK_GL_ERROR();
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
BS_CHECK_GL_ERROR();
BS_INC_RENDER_STAT_CAT(ResWrite, RenderStatObject_Texture);
}
