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fallback_copy_texsubimage() basically works now (at least w/ Xlib driver).

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Have to map regions before calling get_tile()/put_tile().
Need to invert srcY of glCopyTexSubImage() depending on renderbuffers
up/down orientation.
Still need to invert image in fallback_copy_texsubimage() when needed.
This commit is contained in:
Brian 2007-09-26 18:39:14 -06:00
parent 78008dbcaa
commit c6717a8642
1 changed files with 17 additions and 1 deletions
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18
src/mesa/state_tracker/st_cb_texture.c
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@ -1070,6 +1070,8 @@ texture_face(GLenum target)
/**
* Do a CopyTexSubImage operation by mapping the source region and
* dest region and copying/converting pixels.
*
* Note: srcY=0=TOP of renderbuffer
*/
static void
fallback_copy_texsubimage(GLcontext *ctx,
@ -1093,13 +1095,20 @@ fallback_copy_texsubimage(GLcontext *ctx,
dest_surf = pipe->get_tex_surface(pipe, mt,
face, level, destZ);
(void) pipe->region_map(pipe, dest_surf->region);
(void) pipe->region_map(pipe, src_surf->region);
data = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
src_surf->get_tile(src_surf, srcX, srcY, width, height, data);
/* process pixels */
/* Do GL pixel transfer ops here */
/* Also, invert image if strb orientation is Y_0_TOP */
dest_surf->put_tile(dest_surf, destX, destY, width, height, data);
(void) pipe->region_unmap(pipe, dest_surf->region);
(void) pipe->region_unmap(pipe, src_surf->region);
free(data);
}
@ -1109,6 +1118,9 @@ fallback_copy_texsubimage(GLcontext *ctx,
/**
* Do a CopyTex[Sub]Image using an optimized hardware (blit) path.
* Note that the region to copy has already been clip tested.
*
* Note: srcY=0=Bottom of renderbuffer
*
* \return GL_TRUE if success, GL_FALSE if failure (use a fallback)
*/
static void
@ -1151,6 +1163,10 @@ do_copy_texsubimage(GLcontext *ctx,
assert(strb->surface);
assert(stImage->mt);
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
srcY = strb->Base.Height - srcY - height;
}
src_format = strb->surface->format;
dest_format = stImage->mt->format;