/************************************************************************** * * 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 */ #include "draw/draw_private.h" #include "draw/draw_pipe.h" #include "util/u_debug.h" #include "util/u_math.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 = 1000000.0f; /* infinity */ draw->pipeline.wide_line_threshold = 1.0f; draw->pipeline.wide_point_sprites = FALSE; 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 TRIANGLE(flags,i0,i1,i2) \ do { \ do_triangle( draw, \ flags, \ verts + stride * (i0), \ verts + stride * (i1), \ verts + stride * (i2) ); \ } while (0) #define LINE(flags,i0,i1) \ do { \ do_line( draw, \ flags, \ verts + stride * (i0), \ verts + stride * (i1) ); \ } while (0) #define POINT(i0) \ do { \ do_point( draw, verts + stride * (i0) ); \ } while (0) #define GET_ELT(idx) (MIN2(elts[idx], max_index)) #define FUNC pipe_run_elts #define FUNC_VARS \ struct draw_context *draw, \ unsigned prim, \ unsigned prim_flags, \ struct vertex_header *vertices, \ unsigned stride, \ const ushort *elts, \ unsigned count, \ unsigned max_index #include "draw_pt_decompose.h" /** * Code to run the pipeline on a fairly arbitrary 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, const struct draw_vertex_info *vert_info, const struct draw_prim_info *prim_info) { unsigned i, start; draw->pipeline.verts = (char *)vert_info->verts; draw->pipeline.vertex_stride = vert_info->stride; draw->pipeline.vertex_count = vert_info->count; for (start = i = 0; i < prim_info->primitive_count; start += prim_info->primitive_lengths[i], i++) { const unsigned count = prim_info->primitive_lengths[i]; #if DEBUG /* Warn if one of the element indexes go outside the vertex buffer */ { unsigned max_index = 0x0, i; /* find the largest element index */ for (i = 0; i < count; i++) { unsigned int index = prim_info->elts[start + i]; if (index > max_index) max_index = index; } if (max_index >= vert_info->count) { debug_printf("%s: max_index (%u) outside vertex buffer (%u)\n", __FUNCTION__, max_index, vert_info->count); } } #endif pipe_run_elts(draw, prim_info->prim, prim_info->flags, vert_info->verts, vert_info->stride, prim_info->elts + start, count, vert_info->count - 1); } 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 (aka linear) rendering (no elts). */ #define TRIANGLE(flags,i0,i1,i2) \ do_triangle( draw, flags, \ verts + stride * (i0), \ verts + stride * (i1), \ verts + stride * (i2) ) #define LINE(flags,i0,i1) \ do_line( draw, flags, \ verts + stride * (i0), \ verts + stride * (i1) ) #define POINT(i0) \ do_point( draw, verts + stride * (i0) ) #define GET_ELT(idx) (idx) #define FUNC pipe_run_linear #define FUNC_VARS \ struct draw_context *draw, \ unsigned prim, \ unsigned prim_flags, \ struct vertex_header *vertices, \ unsigned stride, \ unsigned count #include "draw_pt_decompose.h" /* * For drawing non-indexed primitives. */ void draw_pipeline_run_linear( struct draw_context *draw, const struct draw_vertex_info *vert_info, const struct draw_prim_info *prim_info) { unsigned i, start; for (start = i = 0; i < prim_info->primitive_count; start += prim_info->primitive_lengths[i], i++) { unsigned count = prim_info->primitive_lengths[i]; char *verts = ((char*)vert_info->verts) + (start * vert_info->stride); draw->pipeline.verts = verts; draw->pipeline.vertex_stride = vert_info->stride; draw->pipeline.vertex_count = count; assert(count <= vert_info->count); pipe_run_linear(draw, prim_info->prim, prim_info->flags, (struct vertex_header*)verts, vert_info->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 ); if (!(flags & DRAW_FLUSH_BACKEND)) draw->pipeline.first = draw->pipeline.validate; }