diff options
author | Keith Whitwell <keith@tungstengraphics.com> | 2008-02-15 11:15:47 +0000 |
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committer | Keith Whitwell <keith@tungstengraphics.com> | 2008-02-15 11:15:47 +0000 |
commit | 6ac2c1cc0cd1253ba2014d459010032127f185ec (patch) | |
tree | 6348de9de19e7394800a983c8c614566d22b870b /src/gallium/aux/draw/draw_prim.c | |
parent | c04a7f8929d674971a472ffa4d3a31200c22aa5a (diff) | |
parent | 6d3831b11d9f5aaba61cc2fb8ade61437ad7c335 (diff) |
Merge commit 'origin/gallium-0.1' into gallium-0.1
Conflicts:
src/gallium/drivers/softpipe/sp_quad_fs.c
src/gallium/drivers/softpipe/sp_state.h
src/gallium/drivers/softpipe/sp_state_fs.c
Diffstat (limited to 'src/gallium/aux/draw/draw_prim.c')
-rw-r--r-- | src/gallium/aux/draw/draw_prim.c | 482 |
1 files changed, 482 insertions, 0 deletions
diff --git a/src/gallium/aux/draw/draw_prim.c b/src/gallium/aux/draw/draw_prim.c new file mode 100644 index 0000000000..51e2242719 --- /dev/null +++ b/src/gallium/aux/draw/draw_prim.c @@ -0,0 +1,482 @@ +/************************************************************************** + * + * 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_debug.h" + +#include "draw_private.h" +#include "draw_context.h" + + + +#define RP_NONE 0 +#define RP_POINT 1 +#define RP_LINE 2 +#define RP_TRI 3 + + +static unsigned reduced_prim[PIPE_PRIM_POLYGON + 1] = { + RP_POINT, + RP_LINE, + RP_LINE, + RP_LINE, + RP_TRI, + RP_TRI, + RP_TRI, + RP_TRI, + RP_TRI, + RP_TRI +}; + + +static void draw_prim_queue_flush( struct draw_context *draw ) +{ + unsigned i; + + if (0) + debug_printf("Flushing with %d prims, %d verts\n", + draw->pq.queue_nr, draw->vs.queue_nr); + + assert (draw->pq.queue_nr != 0); + + /* NOTE: we cannot save draw->pipeline->first in a local var because + * draw->pipeline->first is often changed by the first call to tri(), + * line(), etc. + */ + if (draw->rasterizer->line_stipple_enable) { + switch (draw->reduced_prim) { + case RP_TRI: + for (i = 0; i < draw->pq.queue_nr; i++) { + if (draw->pq.queue[i].reset_line_stipple) + draw->pipeline.first->reset_stipple_counter( draw->pipeline.first ); + + draw->pipeline.first->tri( draw->pipeline.first, &draw->pq.queue[i] ); + } + break; + case RP_LINE: + for (i = 0; i < draw->pq.queue_nr; i++) { + if (draw->pq.queue[i].reset_line_stipple) + draw->pipeline.first->reset_stipple_counter( draw->pipeline.first ); + + draw->pipeline.first->line( draw->pipeline.first, &draw->pq.queue[i] ); + } + break; + case RP_POINT: + draw->pipeline.first->reset_stipple_counter( draw->pipeline.first ); + for (i = 0; i < draw->pq.queue_nr; i++) + draw->pipeline.first->point( draw->pipeline.first, &draw->pq.queue[i] ); + break; + } + } + else { + switch (draw->reduced_prim) { + case RP_TRI: + for (i = 0; i < draw->pq.queue_nr; i++) + draw->pipeline.first->tri( draw->pipeline.first, &draw->pq.queue[i] ); + break; + case RP_LINE: + for (i = 0; i < draw->pq.queue_nr; i++) + draw->pipeline.first->line( draw->pipeline.first, &draw->pq.queue[i] ); + break; + case RP_POINT: + for (i = 0; i < draw->pq.queue_nr; i++) + draw->pipeline.first->point( draw->pipeline.first, &draw->pq.queue[i] ); + break; + } + } + + draw->pq.queue_nr = 0; + draw_vertex_cache_unreference( draw ); +} + + + +void draw_do_flush( struct draw_context *draw, unsigned flags ) +{ + if (0) + debug_printf("Flushing with %d verts, %d prims\n", + draw->vs.queue_nr, + draw->pq.queue_nr ); + + + if (flags >= DRAW_FLUSH_SHADER_QUEUE) { + if (draw->vs.queue_nr) + (*draw->shader_queue_flush)(draw); + + if (flags >= DRAW_FLUSH_PRIM_QUEUE) { + if (draw->pq.queue_nr) + draw_prim_queue_flush(draw); + + if (flags >= DRAW_FLUSH_VERTEX_CACHE) { + draw_vertex_cache_invalidate(draw); + + if (flags >= DRAW_FLUSH_STATE_CHANGE) { + draw->pipeline.first->flush( draw->pipeline.first, flags ); + draw->pipeline.first = draw->pipeline.validate; + draw->reduced_prim = ~0; + } + } + } + } +} + + + +/* Return a pointer to a freshly queued primitive header. Ensure that + * there is room in the vertex cache for a maximum of "nr_verts" new + * vertices. Flush primitive and/or vertex queues if necessary to + * make space. + */ +static struct prim_header *get_queued_prim( struct draw_context *draw, + unsigned nr_verts ) +{ + if (!draw_vertex_cache_check_space( draw, nr_verts )) { +// debug_printf("v"); + draw_do_flush( draw, DRAW_FLUSH_VERTEX_CACHE ); + } + else if (draw->pq.queue_nr == PRIM_QUEUE_LENGTH) { +// debug_printf("p"); + draw_do_flush( draw, DRAW_FLUSH_PRIM_QUEUE ); + } + + assert(draw->pq.queue_nr < PRIM_QUEUE_LENGTH); + + return &draw->pq.queue[draw->pq.queue_nr++]; +} + + + +/** + * Add a point to the primitive queue. + * \param i0 index into user's vertex arrays + */ +static void do_point( struct draw_context *draw, + unsigned i0 ) +{ + struct prim_header *prim = get_queued_prim( draw, 1 ); + + prim->reset_line_stipple = 0; + prim->edgeflags = 1; + prim->pad = 0; + prim->v[0] = draw->vcache.get_vertex( draw, i0 ); +} + + +/** + * Add a line to the primitive queue. + * \param i0 index into user's vertex arrays + * \param i1 index into user's vertex arrays + */ +static void do_line( struct draw_context *draw, + boolean reset_stipple, + unsigned i0, + unsigned i1 ) +{ + struct prim_header *prim = get_queued_prim( draw, 2 ); + + prim->reset_line_stipple = reset_stipple; + prim->edgeflags = 1; + prim->pad = 0; + prim->v[0] = draw->vcache.get_vertex( draw, i0 ); + prim->v[1] = draw->vcache.get_vertex( draw, i1 ); +} + +/** + * Add a triangle to the primitive queue. + */ +static void do_triangle( struct draw_context *draw, + unsigned i0, + unsigned i1, + unsigned i2 ) +{ + struct prim_header *prim = get_queued_prim( draw, 3 ); + + prim->reset_line_stipple = 1; + prim->edgeflags = ~0; + prim->pad = 0; + prim->v[0] = draw->vcache.get_vertex( draw, i0 ); + prim->v[1] = draw->vcache.get_vertex( draw, i1 ); + prim->v[2] = draw->vcache.get_vertex( draw, i2 ); +} + +static void do_ef_triangle( struct draw_context *draw, + boolean reset_stipple, + unsigned ef_mask, + unsigned i0, + unsigned i1, + unsigned i2 ) +{ + struct prim_header *prim = get_queued_prim( draw, 3 ); + struct vertex_header *v0 = draw->vcache.get_vertex( draw, i0 ); + struct vertex_header *v1 = draw->vcache.get_vertex( draw, i1 ); + struct vertex_header *v2 = draw->vcache.get_vertex( draw, i2 ); + + prim->reset_line_stipple = reset_stipple; + + prim->edgeflags = ef_mask & ((v0->edgeflag << 0) | + (v1->edgeflag << 1) | + (v2->edgeflag << 2)); + prim->pad = 0; + prim->v[0] = v0; + prim->v[1] = v1; + prim->v[2] = v2; +} + + +static void do_ef_quad( struct draw_context *draw, + unsigned v0, + unsigned v1, + unsigned v2, + unsigned v3 ) +{ + const unsigned omitEdge2 = ~(1 << 1); + const unsigned omitEdge3 = ~(1 << 2); + do_ef_triangle( draw, 1, omitEdge2, v0, v1, v3 ); + do_ef_triangle( draw, 0, omitEdge3, v1, v2, v3 ); +} + +static void do_quad( struct draw_context *draw, + unsigned v0, + unsigned v1, + unsigned v2, + unsigned v3 ) +{ + do_triangle( draw, v0, v1, v3 ); + do_triangle( draw, v1, v2, v3 ); +} + + +/** + * Main entrypoint to draw some number of points/lines/triangles + */ +static void +draw_prim( struct draw_context *draw, + unsigned prim, unsigned start, unsigned count ) +{ + unsigned i; + boolean unfilled = (draw->rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL || + draw->rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL); + +// debug_printf("%s (%d) %d/%d\n", __FUNCTION__, draw->prim, start, count ); + + switch (prim) { + case PIPE_PRIM_POINTS: + for (i = 0; i < count; i ++) { + do_point( draw, + start + i ); + } + break; + + case PIPE_PRIM_LINES: + for (i = 0; i+1 < count; i += 2) { + do_line( draw, + TRUE, + start + i + 0, + start + i + 1); + } + break; + + case PIPE_PRIM_LINE_LOOP: + if (count >= 2) { + for (i = 1; i < count; i++) { + do_line( draw, + i == 1, /* XXX: only if vb not split */ + start + i - 1, + start + i ); + } + + do_line( draw, + 0, + start + count - 1, + start + 0 ); + } + break; + + case PIPE_PRIM_LINE_STRIP: + for (i = 1; i < count; i++) { + do_line( draw, + i == 1, + start + i - 1, + start + i ); + } + break; + + case PIPE_PRIM_TRIANGLES: + if (unfilled) { + for (i = 0; i+2 < count; i += 3) { + do_ef_triangle( draw, + 1, + ~0, + start + i + 0, + start + i + 1, + start + i + 2 ); + } + } + else { + for (i = 0; i+2 < count; i += 3) { + do_triangle( draw, + start + i + 0, + start + i + 1, + start + i + 2 ); + } + } + break; + + case PIPE_PRIM_TRIANGLE_STRIP: + for (i = 0; i+2 < count; i++) { + if (i & 1) { + do_triangle( draw, + start + i + 1, + start + i + 0, + start + i + 2 ); + } + else { + do_triangle( draw, + start + i + 0, + start + i + 1, + start + i + 2 ); + } + } + break; + + case PIPE_PRIM_TRIANGLE_FAN: + if (count >= 3) { + for (i = 0; i+2 < count; i++) { + do_triangle( draw, + start + 0, + start + i + 1, + start + i + 2 ); + } + } + break; + + + case PIPE_PRIM_QUADS: + if (unfilled) { + for (i = 0; i+3 < count; i += 4) { + do_ef_quad( draw, + start + i + 0, + start + i + 1, + start + i + 2, + start + i + 3); + } + } + else { + for (i = 0; i+3 < count; i += 4) { + do_quad( draw, + start + i + 0, + start + i + 1, + start + i + 2, + start + i + 3); + } + } + break; + + case PIPE_PRIM_QUAD_STRIP: + if (unfilled) { + for (i = 0; i+3 < count; i += 2) { + do_ef_quad( draw, + start + i + 2, + start + i + 0, + start + i + 1, + start + i + 3); + } + } + else { + for (i = 0; i+3 < count; i += 2) { + do_quad( draw, + start + i + 2, + start + i + 0, + start + i + 1, + start + i + 3); + } + } + break; + + case PIPE_PRIM_POLYGON: + if (unfilled) { + unsigned ef_mask = (1<<2) | (1<<0); + + for (i = 0; i+2 < count; i++) { + + if (i + 3 >= count) + ef_mask |= (1<<1); + + do_ef_triangle( draw, + i == 0, + ef_mask, + start + i + 1, + start + i + 2, + start + 0); + + ef_mask &= ~(1<<2); + } + } + else { + for (i = 0; i+2 < count; i++) { + do_triangle( draw, + start + i + 1, + start + i + 2, + start + 0); + } + } + break; + + default: + assert(0); + break; + } +} + + + + +/** + * Draw vertex arrays + * This is the main entrypoint into the drawing module. + * \param prim one of PIPE_PRIM_x + * \param start index of first vertex to draw + * \param count number of vertices to draw + */ +void +draw_arrays(struct draw_context *draw, unsigned prim, + unsigned start, unsigned count) +{ + if (reduced_prim[prim] != draw->reduced_prim) { + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + draw->reduced_prim = reduced_prim[prim]; + } + + /* drawing done here: */ + draw_prim(draw, prim, start, count); +} + + |