1 /************************************************************************** 2 * 3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 29 #include "sp_context.h" 30 #include "sp_state.h" 31 #include "pipe/p_shader_tokens.h" 32 33 34 static void 35 insert_stage_at_head(struct softpipe_context *sp, struct quad_stage *quad) 36 { 37 quad->next = sp->quad.first; 38 sp->quad.first = quad; 39 } 40 41 42 void 43 sp_build_quad_pipeline(struct softpipe_context *sp) 44 { 45 boolean early_depth_test = 46 sp->depth_stencil->depth.enabled && 47 sp->framebuffer.zsbuf && 48 !sp->depth_stencil->alpha.enabled && 49 !sp->fs_variant->info.uses_kill && 50 !sp->fs_variant->info.writes_z && 51 !sp->fs_variant->info.writes_stencil; 52 53 sp->quad.first = sp->quad.blend; 54 55 if (early_depth_test) { 56 insert_stage_at_head( sp, sp->quad.shade ); 57 insert_stage_at_head( sp, sp->quad.depth_test ); 58 } 59 else { 60 insert_stage_at_head( sp, sp->quad.depth_test ); 61 insert_stage_at_head( sp, sp->quad.shade ); 62 } 63 64 #if !DO_PSTIPPLE_IN_DRAW_MODULE && !DO_PSTIPPLE_IN_HELPER_MODULE 65 if (sp->rasterizer->poly_stipple_enable) 66 insert_stage_at_head( sp, sp->quad.pstipple ); 67 #endif 68 } 69 70
