| /************************************************************************** |
| * |
| * 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 "draw/draw_private.h" |
| #include "draw/draw_pipe.h" |
| |
| |
| |
| boolean draw_pipeline_init( struct draw_context *draw ) |
| { |
| /* create pipeline stages */ |
| draw->pipeline.wide_line = draw_wide_line_stage( draw ); |
| draw->pipeline.wide_point = draw_wide_point_stage( draw ); |
| draw->pipeline.stipple = draw_stipple_stage( draw ); |
| draw->pipeline.unfilled = draw_unfilled_stage( draw ); |
| draw->pipeline.twoside = draw_twoside_stage( draw ); |
| draw->pipeline.offset = draw_offset_stage( draw ); |
| draw->pipeline.clip = draw_clip_stage( draw ); |
| draw->pipeline.flatshade = draw_flatshade_stage( draw ); |
| draw->pipeline.cull = draw_cull_stage( draw ); |
| draw->pipeline.validate = draw_validate_stage( draw ); |
| draw->pipeline.first = draw->pipeline.validate; |
| |
| if (!draw->pipeline.wide_line || |
| !draw->pipeline.wide_point || |
| !draw->pipeline.stipple || |
| !draw->pipeline.unfilled || |
| !draw->pipeline.twoside || |
| !draw->pipeline.offset || |
| !draw->pipeline.clip || |
| !draw->pipeline.flatshade || |
| !draw->pipeline.cull || |
| !draw->pipeline.validate) |
| return FALSE; |
| |
| /* these defaults are oriented toward the needs of softpipe */ |
| draw->pipeline.wide_point_threshold = 1000000.0; /* infinity */ |
| draw->pipeline.wide_line_threshold = 1.0; |
| draw->pipeline.line_stipple = TRUE; |
| draw->pipeline.point_sprite = TRUE; |
| |
| return TRUE; |
| } |
| |
| |
| void draw_pipeline_destroy( struct draw_context *draw ) |
| { |
| if (draw->pipeline.wide_line) |
| draw->pipeline.wide_line->destroy( draw->pipeline.wide_line ); |
| if (draw->pipeline.wide_point) |
| draw->pipeline.wide_point->destroy( draw->pipeline.wide_point ); |
| if (draw->pipeline.stipple) |
| draw->pipeline.stipple->destroy( draw->pipeline.stipple ); |
| if (draw->pipeline.unfilled) |
| draw->pipeline.unfilled->destroy( draw->pipeline.unfilled ); |
| if (draw->pipeline.twoside) |
| draw->pipeline.twoside->destroy( draw->pipeline.twoside ); |
| if (draw->pipeline.offset) |
| draw->pipeline.offset->destroy( draw->pipeline.offset ); |
| if (draw->pipeline.clip) |
| draw->pipeline.clip->destroy( draw->pipeline.clip ); |
| if (draw->pipeline.flatshade) |
| draw->pipeline.flatshade->destroy( draw->pipeline.flatshade ); |
| if (draw->pipeline.cull) |
| draw->pipeline.cull->destroy( draw->pipeline.cull ); |
| if (draw->pipeline.validate) |
| draw->pipeline.validate->destroy( draw->pipeline.validate ); |
| if (draw->pipeline.aaline) |
| draw->pipeline.aaline->destroy( draw->pipeline.aaline ); |
| if (draw->pipeline.aapoint) |
| draw->pipeline.aapoint->destroy( draw->pipeline.aapoint ); |
| if (draw->pipeline.pstipple) |
| draw->pipeline.pstipple->destroy( draw->pipeline.pstipple ); |
| if (draw->pipeline.rasterize) |
| draw->pipeline.rasterize->destroy( draw->pipeline.rasterize ); |
| } |
| |
| |
| |
| /** |
| * Build primitive to render a point with vertex at v0. |
| */ |
| static void do_point( struct draw_context *draw, |
| const char *v0 ) |
| { |
| struct prim_header prim; |
| |
| prim.flags = 0; |
| prim.pad = 0; |
| prim.v[0] = (struct vertex_header *)v0; |
| |
| draw->pipeline.first->point( draw->pipeline.first, &prim ); |
| } |
| |
| |
| /** |
| * Build primitive to render a line with vertices at v0, v1. |
| * \param flags bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE |
| */ |
| static void do_line( struct draw_context *draw, |
| ushort flags, |
| const char *v0, |
| const char *v1 ) |
| { |
| struct prim_header prim; |
| |
| prim.flags = flags; |
| prim.pad = 0; |
| prim.v[0] = (struct vertex_header *)v0; |
| prim.v[1] = (struct vertex_header *)v1; |
| |
| draw->pipeline.first->line( draw->pipeline.first, &prim ); |
| } |
| |
| |
| /** |
| * Build primitive to render a triangle with vertices at v0, v1, v2. |
| * \param flags bitmask of DRAW_PIPE_EDGE_x, DRAW_PIPE_RESET_STIPPLE |
| */ |
| static void do_triangle( struct draw_context *draw, |
| ushort flags, |
| char *v0, |
| char *v1, |
| char *v2 ) |
| { |
| struct prim_header prim; |
| |
| prim.v[0] = (struct vertex_header *)v0; |
| prim.v[1] = (struct vertex_header *)v1; |
| prim.v[2] = (struct vertex_header *)v2; |
| prim.flags = flags; |
| prim.pad = 0; |
| |
| draw->pipeline.first->tri( draw->pipeline.first, &prim ); |
| } |
| |
| |
| /* |
| * Set up macros for draw_pt_decompose.h template code. |
| * This code uses vertex indexes / elements. |
| */ |
| #define QUAD(i0,i1,i2,i3) \ |
| do_triangle( draw, \ |
| ( DRAW_PIPE_RESET_STIPPLE | \ |
| DRAW_PIPE_EDGE_FLAG_0 | \ |
| DRAW_PIPE_EDGE_FLAG_2 ), \ |
| verts + stride * elts[i0], \ |
| verts + stride * elts[i1], \ |
| verts + stride * elts[i3]); \ |
| do_triangle( draw, \ |
| ( DRAW_PIPE_EDGE_FLAG_0 | \ |
| DRAW_PIPE_EDGE_FLAG_1 ), \ |
| verts + stride * elts[i1], \ |
| verts + stride * elts[i2], \ |
| verts + stride * elts[i3]) |
| |
| #define TRIANGLE(flags,i0,i1,i2) \ |
| do_triangle( draw, \ |
| elts[i0], /* flags */ \ |
| verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \ |
| verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK), \ |
| verts + stride * (elts[i2] & ~DRAW_PIPE_FLAG_MASK) ); |
| |
| #define LINE(flags,i0,i1) \ |
| do_line( draw, \ |
| elts[i0], \ |
| verts + stride * (elts[i0] & ~DRAW_PIPE_FLAG_MASK), \ |
| verts + stride * (elts[i1] & ~DRAW_PIPE_FLAG_MASK) ); |
| |
| #define POINT(i0) \ |
| do_point( draw, \ |
| verts + stride * elts[i0] ) |
| |
| #define FUNC pipe_run |
| #define ARGS \ |
| struct draw_context *draw, \ |
| unsigned prim, \ |
| struct vertex_header *vertices, \ |
| unsigned stride, \ |
| const ushort *elts |
| |
| #define LOCAL_VARS \ |
| char *verts = (char *)vertices; \ |
| boolean flatfirst = (draw->rasterizer->flatshade && \ |
| draw->rasterizer->flatshade_first); \ |
| unsigned i; \ |
| ushort flags |
| |
| #define FLUSH |
| |
| #include "draw_pt_decompose.h" |
| #undef ARGS |
| #undef LOCAL_VARS |
| |
| |
| |
| /** |
| * Code to run the pipeline on a fairly arbitary collection of vertices. |
| * For drawing indexed primitives. |
| * |
| * Vertex headers must be pre-initialized with the |
| * UNDEFINED_VERTEX_ID, this code will cause that id to become |
| * overwritten, so it may have to be reset if there is the intention |
| * to reuse the vertices. |
| * |
| * This code provides a callback to reset the vertex id's which the |
| * draw_vbuf.c code uses when it has to perform a flush. |
| */ |
| void draw_pipeline_run( struct draw_context *draw, |
| unsigned prim, |
| struct vertex_header *vertices, |
| unsigned vertex_count, |
| unsigned stride, |
| const ushort *elts, |
| unsigned count ) |
| { |
| char *verts = (char *)vertices; |
| |
| draw->pipeline.verts = verts; |
| draw->pipeline.vertex_stride = stride; |
| draw->pipeline.vertex_count = vertex_count; |
| |
| pipe_run(draw, prim, vertices, stride, elts, count); |
| |
| draw->pipeline.verts = NULL; |
| draw->pipeline.vertex_count = 0; |
| } |
| |
| |
| |
| /* |
| * Set up macros for draw_pt_decompose.h template code. |
| * This code is for non-indexed rendering (no elts). |
| */ |
| #define QUAD(i0,i1,i2,i3) \ |
| do_triangle( draw, \ |
| ( DRAW_PIPE_RESET_STIPPLE | \ |
| DRAW_PIPE_EDGE_FLAG_0 | \ |
| DRAW_PIPE_EDGE_FLAG_2 ), \ |
| verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \ |
| verts + stride * (i1), \ |
| verts + stride * (i3)); \ |
| do_triangle( draw, \ |
| ( DRAW_PIPE_EDGE_FLAG_0 | \ |
| DRAW_PIPE_EDGE_FLAG_1 ), \ |
| verts + stride * ((i1) & ~DRAW_PIPE_FLAG_MASK), \ |
| verts + stride * (i2), \ |
| verts + stride * (i3)) |
| |
| #define TRIANGLE(flags,i0,i1,i2) \ |
| do_triangle( draw, \ |
| flags, /* flags */ \ |
| verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \ |
| verts + stride * (i1), \ |
| verts + stride * (i2)) |
| |
| #define LINE(flags,i0,i1) \ |
| do_line( draw, \ |
| flags, \ |
| verts + stride * ((i0) & ~DRAW_PIPE_FLAG_MASK), \ |
| verts + stride * (i1)) |
| |
| #define POINT(i0) \ |
| do_point( draw, \ |
| verts + stride * i0 ) |
| |
| #define FUNC pipe_run_linear |
| #define ARGS \ |
| struct draw_context *draw, \ |
| unsigned prim, \ |
| struct vertex_header *vertices, \ |
| unsigned stride |
| |
| #define LOCAL_VARS \ |
| char *verts = (char *)vertices; \ |
| boolean flatfirst = (draw->rasterizer->flatshade && \ |
| draw->rasterizer->flatshade_first); \ |
| unsigned i; \ |
| ushort flags |
| |
| #define FLUSH |
| |
| #include "draw_pt_decompose.h" |
| |
| |
| /* |
| * For drawing non-indexed primitives. |
| */ |
| void draw_pipeline_run_linear( struct draw_context *draw, |
| unsigned prim, |
| struct vertex_header *vertices, |
| unsigned count, |
| unsigned stride ) |
| { |
| char *verts = (char *)vertices; |
| draw->pipeline.verts = verts; |
| draw->pipeline.vertex_stride = stride; |
| draw->pipeline.vertex_count = count; |
| |
| pipe_run_linear(draw, prim, vertices, stride, count); |
| |
| draw->pipeline.verts = NULL; |
| draw->pipeline.vertex_count = 0; |
| } |
| |
| |
| void draw_pipeline_flush( struct draw_context *draw, |
| unsigned flags ) |
| { |
| draw->pipeline.first->flush( draw->pipeline.first, flags ); |
| draw->pipeline.first = draw->pipeline.validate; |
| } |