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/**************************************************************************
*
* Copyright 2005 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.
*
**************************************************************************/
#include "swrast_setup/swrast_setup.h"
#include "swrast/swrast.h"
#include "tnl/tnl.h"
#include "context.h"
#include "brw_context.h"
#include "brw_fallback.h"
#include "glheader.h"
#include "enums.h"
#include "glapi.h"
#include "imports.h"
#include "macros.h"
#include "mtypes.h"
#define FILE_DEBUG_FLAG DEBUG_FALLBACKS
static GLboolean do_check_fallback(struct brw_context *brw)
{
GLcontext *ctx = &brw->intel.ctx;
GLuint i;
struct gl_framebuffer *fb = ctx->DrawBuffer;
/* BRW_NEW_METAOPS
*/
if (brw->metaops.active)
return GL_FALSE;
if (brw->intel.no_rast) {
DBG("FALLBACK: rasterization disabled\n");
return GL_TRUE;
}
/* _NEW_BUFFERS
*/
/* We can only handle a single draw buffer at the moment, and only as the
* first color buffer.
*/
if (fb->_NumColorDrawBuffers > 1) {
DBG("FALLBACK: multiple color draw buffers\n");
return GL_TRUE;
}
/* _NEW_RENDERMODE
*
* XXX: need to save/restore RenderMode in metaops state, or
* somehow move to a new attribs pointer:
*/
if (ctx->RenderMode != GL_RENDER) {
DBG("FALLBACK: render mode\n");
return GL_TRUE;
}
/* _NEW_TEXTURE:
*/
for (i = 0; i < BRW_MAX_TEX_UNIT; i++) {
struct gl_texture_unit *texUnit = &brw->attribs.Texture->Unit[i];
if (texUnit->_ReallyEnabled) {
struct intel_texture_object *intelObj = intel_texture_object(texUnit->_Current);
struct gl_texture_image *texImage = intelObj->base.Image[0][intelObj->firstLevel];
if (texImage->Border) {
DBG("FALLBACK: texture border\n");
return GL_TRUE;
}
}
}
/* _NEW_STENCIL
*/
if (brw->attribs.Stencil->Enabled &&
!brw->intel.hw_stencil) {
DBG("FALLBACK: stencil\n");
return GL_TRUE;
}
return GL_FALSE;
}
static void check_fallback(struct brw_context *brw)
{
brw->intel.Fallback = do_check_fallback(brw);
}
const struct brw_tracked_state brw_check_fallback = {
.dirty = {
.mesa = _NEW_BUFFERS | _NEW_RENDERMODE | _NEW_TEXTURE | _NEW_STENCIL,
.brw = BRW_NEW_METAOPS,
.cache = 0
},
.update = check_fallback
};
/* Not used:
*/
void intelFallback( struct intel_context *intel, GLuint bit, GLboolean mode )
{
}
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