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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
/*
* Authors:
* Brian Paul
*/
#include "main/imports.h"
#include "main/image.h"
#include "main/macros.h"
#include "st_context.h"
#include "st_texture.h"
#include "st_cb_blit.h"
#include "st_cb_fbo.h"
#include "util/u_blit.h"
#include "util/u_inlines.h"
void
st_init_blit(struct st_context *st)
{
st->blit = util_create_blit(st->pipe, st->cso_context);
}
void
st_destroy_blit(struct st_context *st)
{
util_destroy_blit(st->blit);
st->blit = NULL;
}
#if FEATURE_EXT_framebuffer_blit
static void
st_BlitFramebuffer(GLcontext *ctx,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter)
{
const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT);
struct st_context *st = st_context(ctx);
const uint pFilter = ((filter == GL_NEAREST)
? PIPE_TEX_MIPFILTER_NEAREST
: PIPE_TEX_MIPFILTER_LINEAR);
struct gl_framebuffer *readFB = ctx->ReadBuffer;
struct gl_framebuffer *drawFB = ctx->DrawBuffer;
if (!_mesa_clip_blit(ctx, &srcX0, &srcY0, &srcX1, &srcY1,
&dstX0, &dstY0, &dstX1, &dstY1)) {
return; /* nothing to draw/blit */
}
if (st_fb_orientation(drawFB) == Y_0_TOP) {
/* invert Y for dest */
dstY0 = drawFB->Height - dstY0;
dstY1 = drawFB->Height - dstY1;
}
if (st_fb_orientation(readFB) == Y_0_TOP) {
/* invert Y for src */
srcY0 = readFB->Height - srcY0;
srcY1 = readFB->Height - srcY1;
}
if (srcY0 > srcY1 && dstY0 > dstY1) {
/* Both src and dst are upside down. Swap Y to make it
* right-side up to increase odds of using a fast path.
* Recall that all Gallium raster coords have Y=0=top.
*/
GLint tmp;
tmp = srcY0;
srcY0 = srcY1;
srcY1 = tmp;
tmp = dstY0;
dstY0 = dstY1;
dstY1 = tmp;
}
if (mask & GL_COLOR_BUFFER_BIT) {
struct gl_renderbuffer_attachment *srcAtt =
&readFB->Attachment[readFB->_ColorReadBufferIndex];
if(srcAtt->Type == GL_TEXTURE) {
struct st_texture_object *srcObj =
st_texture_object(srcAtt->Texture);
struct st_renderbuffer *dstRb =
st_renderbuffer(drawFB->_ColorDrawBuffers[0]);
struct pipe_subresource srcSub;
struct pipe_surface *dstSurf = dstRb->surface;
if (!srcObj->pt)
return;
srcSub.face = srcAtt->CubeMapFace;
srcSub.level = srcAtt->TextureLevel;
util_blit_pixels(st->blit, srcObj->pt, srcSub,
srcX0, srcY0, srcX1, srcY1, srcAtt->Zoffset,
dstSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter);
}
else {
struct st_renderbuffer *srcRb =
st_renderbuffer(readFB->_ColorReadBuffer);
struct st_renderbuffer *dstRb =
st_renderbuffer(drawFB->_ColorDrawBuffers[0]);
struct pipe_surface *srcSurf = srcRb->surface;
struct pipe_surface *dstSurf = dstRb->surface;
struct pipe_subresource srcSub;
srcSub.face = srcSurf->face;
srcSub.level = srcSurf->level;
util_blit_pixels(st->blit,
srcRb->texture, srcSub, srcX0, srcY0, srcX1, srcY1,
srcSurf->zslice,
dstSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter);
}
}
if (mask & depthStencil) {
/* depth and/or stencil blit */
/* get src/dst depth surfaces */
struct gl_renderbuffer_attachment *srcDepth =
&readFB->Attachment[BUFFER_DEPTH];
struct gl_renderbuffer_attachment *dstDepth =
&drawFB->Attachment[BUFFER_DEPTH];
struct gl_renderbuffer_attachment *srcStencil =
&readFB->Attachment[BUFFER_STENCIL];
struct gl_renderbuffer_attachment *dstStencil =
&drawFB->Attachment[BUFFER_STENCIL];
struct st_renderbuffer *srcDepthRb =
st_renderbuffer(readFB->Attachment[BUFFER_DEPTH].Renderbuffer);
struct st_renderbuffer *dstDepthRb =
st_renderbuffer(drawFB->Attachment[BUFFER_DEPTH].Renderbuffer);
struct pipe_surface *dstDepthSurf =
dstDepthRb ? dstDepthRb->surface : NULL;
if ((mask & depthStencil) == depthStencil &&
st_is_depth_stencil_combined(srcDepth, srcStencil) &&
st_is_depth_stencil_combined(dstDepth, dstStencil)) {
/* Blitting depth and stencil values between combined
* depth/stencil buffers. This is the ideal case for such buffers.
*/
util_blit_pixels(st->blit, srcDepthRb->texture,
u_subresource(srcDepthRb->surface->face,
srcDepthRb->surface->level),
srcX0, srcY0, srcX1, srcY1,
srcDepthRb->surface->zslice,
dstDepthSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter);
}
else {
/* blitting depth and stencil separately */
if (mask & GL_DEPTH_BUFFER_BIT) {
util_blit_pixels(st->blit, srcDepthRb->texture,
u_subresource(srcDepthRb->surface->face,
srcDepthRb->surface->level),
srcX0, srcY0, srcX1, srcY1,
srcDepthRb->surface->zslice,
dstDepthSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter);
}
if (mask & GL_STENCIL_BUFFER_BIT) {
/* blit stencil only */
_mesa_problem(ctx, "st_BlitFramebuffer(STENCIL) not completed");
}
}
}
}
void
st_init_blit_functions(struct dd_function_table *functions)
{
functions->BlitFramebuffer = st_BlitFramebuffer;
}
#endif /* FEATURE_EXT_framebuffer_blit */
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