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/*
* Copyright 2003 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "main/mtypes.h"
#include "main/enums.h"
#include "main/image.h"
#include "main/teximage.h"
#include "main/texobj.h"
#include "main/texstate.h"
#include "main/fbobject.h"
#include "drivers/common/meta.h"
#include "intel_screen.h"
#include "intel_mipmap_tree.h"
#include "intel_fbo.h"
#include "intel_tex.h"
#include "intel_blit.h"
#include "brw_context.h"
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
static bool
intel_copy_texsubimage(struct brw_context *brw,
struct intel_texture_image *intelImage,
GLint dstx, GLint dsty, GLint slice,
struct intel_renderbuffer *irb,
GLint x, GLint y, GLsizei width, GLsizei height)
{
const GLenum internalFormat = intelImage->base.Base.InternalFormat;
if (!intelImage->mt || !irb || !irb->mt) {
if (unlikely(INTEL_DEBUG & DEBUG_PERF))
fprintf(stderr, "%s fail %p %p (0x%08x)\n",
__func__, intelImage->mt, irb, internalFormat);
return false;
}
/* No pixel transfer operations (zoom, bias, mapping), just a blit */
if (brw->ctx._ImageTransferState)
return false;
intel_prepare_render(brw);
/* glCopyTexSubImage() can be called on a multisampled renderbuffer (if
* that renderbuffer is associated with the window system framebuffer),
* however the hardware blitter can't handle this case, so fall back to
* meta (which can, since it uses ReadPixels).
*/
if (irb->Base.Base.NumSamples != 0)
return false;
/* glCopyTexSubImage() can't be called on a multisampled texture. */
assert(intelImage->base.Base.NumSamples == 0);
/* account for view parameters and face index */
int dst_level = intelImage->base.Base.Level +
intelImage->base.Base.TexObject->MinLevel;
int dst_slice = slice + intelImage->base.Base.Face +
intelImage->base.Base.TexObject->MinLayer;
/* blit from src buffer to texture */
return intel_miptree_blit(brw,
irb->mt, irb->mt_level, irb->mt_layer,
x, y, irb->Base.Base.Name == 0,
intelImage->mt, dst_level, dst_slice,
dstx, dsty, false,
width, height, GL_COPY);
}
static void
intelCopyTexSubImage(struct gl_context *ctx, GLuint dims,
struct gl_texture_image *texImage,
GLint xoffset, GLint yoffset, GLint slice,
struct gl_renderbuffer *rb,
GLint x, GLint y,
GLsizei width, GLsizei height)
{
struct brw_context *brw = brw_context(ctx);
/* Try BLORP first. It can handle almost everything. */
if (brw_blorp_copytexsubimage(brw, rb, texImage, slice, x, y,
xoffset, yoffset, width, height))
return;
/* Next, try the BLT engine. */
if (intel_copy_texsubimage(brw,
intel_texture_image(texImage),
xoffset, yoffset, slice,
intel_renderbuffer(rb), x, y, width, height)) {
return;
}
/* Finally, fall back to meta. This will likely be slow. */
perf_debug("%s - fallback to swrast\n", __func__);
_mesa_meta_CopyTexSubImage(ctx, dims, texImage,
xoffset, yoffset, slice,
rb, x, y, width, height);
}
void
intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
{
functions->CopyTexSubImage = intelCopyTexSubImage;
}
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