diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_vertex_shader.c')
-rw-r--r-- | src/gallium/auxiliary/draw/draw_vertex_shader.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vertex_shader.c b/src/gallium/auxiliary/draw/draw_vertex_shader.c new file mode 100644 index 0000000000..f68f6e3244 --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_vertex_shader.c @@ -0,0 +1,126 @@ +/************************************************************************** + * + * 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> + * Brian Paul + */ + +#include "pipe/p_util.h" +#include "pipe/p_shader_tokens.h" +#include "draw_private.h" +#include "draw_context.h" +#include "draw_vs.h" + + + +/** + * Run the vertex shader on all vertices in the vertex queue. + * Called by the draw module when the vertx cache needs to be flushed. + */ +void +draw_vertex_shader_queue_flush(struct draw_context *draw) +{ + struct draw_vertex_shader *shader = draw->vertex_shader; + unsigned i; + + assert(draw->vs.queue_nr != 0); + + /* XXX: do this on statechange: + */ + shader->prepare( shader, draw ); + +// fprintf(stderr, " q(%d) ", draw->vs.queue_nr ); + + /* run vertex shader on vertex cache entries, four per invokation */ + for (i = 0; i < draw->vs.queue_nr; i += 4) { + struct vertex_header *dests[4]; + unsigned elts[4]; + int j, n = MIN2(4, draw->vs.queue_nr - i); + + for (j = 0; j < n; j++) { + elts[j] = draw->vs.queue[i + j].elt; + dests[j] = draw->vs.queue[i + j].dest; + } + + for ( ; j < 4; j++) { + elts[j] = elts[0]; + dests[j] = dests[0]; + } + + assert(n > 0); + assert(n <= 4); + + shader->run(shader, draw, elts, n, dests); + } + + draw->vs.queue_nr = 0; +} + + +struct draw_vertex_shader * +draw_create_vertex_shader(struct draw_context *draw, + const struct pipe_shader_state *shader) +{ + struct draw_vertex_shader *vs; + + vs = draw_create_vs_llvm( draw, shader ); + if (vs) + return vs; + + vs = draw_create_vs_sse( draw, shader ); + if (vs) + return vs; + + vs = draw_create_vs_exec( draw, shader ); + assert(vs); + return vs; +} + + +void +draw_bind_vertex_shader(struct draw_context *draw, + struct draw_vertex_shader *dvs) +{ + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + + draw->vertex_shader = dvs; + draw->num_vs_outputs = dvs->state->num_outputs; + + tgsi_exec_machine_init(&draw->machine); + + dvs->prepare( dvs, draw ); +} + + +void +draw_delete_vertex_shader(struct draw_context *draw, + struct draw_vertex_shader *dvs) +{ + dvs->delete( dvs ); +} |