| /************************************************************************** |
| * |
| * 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" |
| #include "util/u_debug.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) (elts[idx]) |
| |
| #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 |
| |
| #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); |
| } |
| |
| 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; |
| } |
