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Diffstat (limited to 'src/mesa/pipe/draw/draw_twoside.c')
-rw-r--r--src/mesa/pipe/draw/draw_twoside.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/src/mesa/pipe/draw/draw_twoside.c b/src/mesa/pipe/draw/draw_twoside.c
deleted file mode 100644
index ad2aaf10bb..0000000000
--- a/src/mesa/pipe/draw/draw_twoside.c
+++ /dev/null
@@ -1,203 +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.
- *
- **************************************************************************/
-
-/* Authors: Keith Whitwell <keith@tungstengraphics.com>
- */
-
-#include "pipe/p_util.h"
-#include "pipe/p_defines.h"
-#include "pipe/p_shader_tokens.h"
-#include "draw_private.h"
-
-
-struct twoside_stage {
- struct draw_stage stage;
- float sign; /**< +1 or -1 */
- uint attrib_front0, attrib_back0;
- uint attrib_front1, attrib_back1;
-};
-
-
-static INLINE struct twoside_stage *twoside_stage( struct draw_stage *stage )
-{
- return (struct twoside_stage *)stage;
-}
-
-
-
-
-/**
- * Copy back color(s) to front color(s).
- */
-static INLINE struct vertex_header *
-copy_bfc( struct twoside_stage *twoside,
- const struct vertex_header *v,
- unsigned idx )
-{
- struct vertex_header *tmp = dup_vert( &twoside->stage, v, idx );
-
- if (twoside->attrib_back0) {
- COPY_4FV(tmp->data[twoside->attrib_front0],
- tmp->data[twoside->attrib_back0]);
- }
- if (twoside->attrib_back1) {
- COPY_4FV(tmp->data[twoside->attrib_front1],
- tmp->data[twoside->attrib_back1]);
- }
-
- return tmp;
-}
-
-
-/* Twoside tri:
- */
-static void twoside_tri( struct draw_stage *stage,
- struct prim_header *header )
-{
- struct twoside_stage *twoside = twoside_stage(stage);
-
- if (header->det * twoside->sign < 0.0) {
- /* this is a back-facing triangle */
- struct prim_header tmp;
-
- tmp.det = header->det;
- tmp.edgeflags = header->edgeflags;
- /* copy back attribs to front attribs */
- tmp.v[0] = copy_bfc(twoside, header->v[0], 0);
- tmp.v[1] = copy_bfc(twoside, header->v[1], 1);
- tmp.v[2] = copy_bfc(twoside, header->v[2], 2);
-
- stage->next->tri( stage->next, &tmp );
- }
- else {
- stage->next->tri( stage->next, header );
- }
-}
-
-
-static void twoside_line( struct draw_stage *stage,
- struct prim_header *header )
-{
- /* pass-through */
- stage->next->line( stage->next, header );
-}
-
-
-static void twoside_point( struct draw_stage *stage,
- struct prim_header *header )
-{
- /* pass-through */
- stage->next->point( stage->next, header );
-}
-
-
-static void twoside_first_tri( struct draw_stage *stage,
- struct prim_header *header )
-{
- struct twoside_stage *twoside = twoside_stage(stage);
- const struct pipe_shader_state *vs = stage->draw->vertex_shader->state;
- uint i;
-
- twoside->attrib_front0 = 0;
- twoside->attrib_front1 = 0;
- twoside->attrib_back0 = 0;
- twoside->attrib_back1 = 0;
-
- /* Find which vertex shader outputs are front/back colors */
- for (i = 0; i < vs->num_outputs; i++) {
- if (vs->output_semantic_name[i] == TGSI_SEMANTIC_COLOR) {
- if (vs->output_semantic_index[i] == 0)
- twoside->attrib_front0 = i;
- else
- twoside->attrib_front1 = i;
- }
- if (vs->output_semantic_name[i] == TGSI_SEMANTIC_BCOLOR) {
- if (vs->output_semantic_index[i] == 0)
- twoside->attrib_back0 = i;
- else
- twoside->attrib_back1 = i;
- }
- }
-
- if (!twoside->attrib_back0)
- twoside->attrib_front0 = 0;
-
- if (!twoside->attrib_back1)
- twoside->attrib_front1 = 0;
-
- /*
- * We'll multiply the primitive's determinant by this sign to determine
- * if the triangle is back-facing (negative).
- * sign = -1 for CCW, +1 for CW
- */
- twoside->sign = (stage->draw->rasterizer->front_winding == PIPE_WINDING_CCW) ? -1.0f : 1.0f;
-
- stage->tri = twoside_tri;
- stage->tri( stage, header );
-}
-
-
-static void twoside_flush( struct draw_stage *stage, unsigned flags )
-{
- stage->tri = twoside_first_tri;
- stage->next->flush( stage->next, flags );
-}
-
-
-static void twoside_reset_stipple_counter( struct draw_stage *stage )
-{
- stage->next->reset_stipple_counter( stage->next );
-}
-
-
-static void twoside_destroy( struct draw_stage *stage )
-{
- draw_free_tmps( stage );
- FREE( stage );
-}
-
-
-/**
- * Create twoside pipeline stage.
- */
-struct draw_stage *draw_twoside_stage( struct draw_context *draw )
-{
- struct twoside_stage *twoside = CALLOC_STRUCT(twoside_stage);
-
- draw_alloc_tmps( &twoside->stage, 3 );
-
- twoside->stage.draw = draw;
- twoside->stage.next = NULL;
- twoside->stage.point = twoside_point;
- twoside->stage.line = twoside_line;
- twoside->stage.tri = twoside_first_tri;
- twoside->stage.flush = twoside_flush;
- twoside->stage.reset_stipple_counter = twoside_reset_stipple_counter;
- twoside->stage.destroy = twoside_destroy;
-
- return &twoside->stage;
-}
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