summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/softpipe/sp_quad_earlyz.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_quad_earlyz.c')
-rw-r--r--src/gallium/drivers/softpipe/sp_quad_earlyz.c88
1 files changed, 0 insertions, 88 deletions
diff --git a/src/gallium/drivers/softpipe/sp_quad_earlyz.c b/src/gallium/drivers/softpipe/sp_quad_earlyz.c
deleted file mode 100644
index 496fd39ed1..0000000000
--- a/src/gallium/drivers/softpipe/sp_quad_earlyz.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/**************************************************************************
- *
- * 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.
- *
- **************************************************************************/
-
-/**
- * \brief Quad early-z testing
- */
-
-#include "pipe/p_defines.h"
-#include "util/u_memory.h"
-#include "sp_quad.h"
-#include "sp_quad_pipe.h"
-
-
-/**
- * All this stage does is compute the quad's Z values (which is normally
- * done by the shading stage).
- * The next stage will do the actual depth test.
- */
-static void
-earlyz_quad(
- struct quad_stage *qs,
- struct quad_header *quad )
-{
- const float fx = (float) quad->input.x0;
- const float fy = (float) quad->input.y0;
- const float dzdx = quad->posCoef->dadx[2];
- const float dzdy = quad->posCoef->dady[2];
- const float z0 = quad->posCoef->a0[2] + dzdx * fx + dzdy * fy;
-
- quad->output.depth[0] = z0;
- quad->output.depth[1] = z0 + dzdx;
- quad->output.depth[2] = z0 + dzdy;
- quad->output.depth[3] = z0 + dzdx + dzdy;
-
- qs->next->run( qs->next, quad );
-}
-
-static void
-earlyz_begin(
- struct quad_stage *qs )
-{
- qs->next->begin( qs->next );
-}
-
-static void
-earlyz_destroy(
- struct quad_stage *qs )
-{
- FREE( qs );
-}
-
-struct quad_stage *
-sp_quad_earlyz_stage(
- struct softpipe_context *softpipe )
-{
- struct quad_stage *stage = CALLOC_STRUCT( quad_stage );
-
- stage->softpipe = softpipe;
- stage->begin = earlyz_begin;
- stage->run = earlyz_quad;
- stage->destroy = earlyz_destroy;
-
- return stage;
-}