1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "util/u_math.h"
29 #include "util/u_memory.h"
30 #include "pipe/p_shader_tokens.h"
31 #include "draw/draw_context.h"
32 #include "draw/draw_vertex.h"
33 #include "sp_context.h"
34 #include "sp_screen.h"
36 #include "sp_texture.h"
37 #include "sp_tex_tile_cache.h"
41 * Mark the current vertex layout as "invalid".
42 * We'll validate the vertex layout later, when we start to actually
43 * render a point or line or tri.
46 invalidate_vertex_layout(struct softpipe_context *softpipe)
48 softpipe->vertex_info.num_attribs = 0;
53 * The vertex info describes how to convert the post-transformed vertices
54 * (simple float[][4]) used by the 'draw' module into vertices for
57 * This function validates the vertex layout and returns a pointer to a
61 softpipe_get_vertex_info(struct softpipe_context *softpipe)
63 struct vertex_info *vinfo = &softpipe->vertex_info;
65 if (vinfo->num_attribs == 0) {
66 /* compute vertex layout now */
67 const struct sp_fragment_shader *spfs = softpipe->fs;
68 struct vertex_info *vinfo_vbuf = &softpipe->vertex_info_vbuf;
69 const uint num = draw_num_shader_outputs(softpipe->draw);
72 /* Tell draw_vbuf to simply emit the whole post-xform vertex
73 * as-is. No longer any need to try and emit draw vertex_header
76 vinfo_vbuf->num_attribs = 0;
77 for (i = 0; i < num; i++) {
78 draw_emit_vertex_attr(vinfo_vbuf, EMIT_4F, INTERP_PERSPECTIVE, i);
80 draw_compute_vertex_size(vinfo_vbuf);
83 * Loop over fragment shader inputs, searching for the matching output
84 * from the vertex shader.
86 vinfo->num_attribs = 0;
87 for (i = 0; i < spfs->info.num_inputs; i++) {
89 enum interp_mode interp;
91 switch (spfs->info.input_interpolate[i]) {
92 case TGSI_INTERPOLATE_CONSTANT:
93 interp = INTERP_CONSTANT;
95 case TGSI_INTERPOLATE_LINEAR:
96 interp = INTERP_LINEAR;
98 case TGSI_INTERPOLATE_PERSPECTIVE:
99 interp = INTERP_PERSPECTIVE;
103 interp = INTERP_LINEAR;
106 switch (spfs->info.input_semantic_name[i]) {
107 case TGSI_SEMANTIC_POSITION:
111 case TGSI_SEMANTIC_COLOR:
112 if (softpipe->rasterizer->flatshade) {
113 interp = INTERP_CONSTANT;
118 /* this includes texcoords and varying vars */
119 src = draw_find_shader_output(softpipe->draw,
120 spfs->info.input_semantic_name[i],
121 spfs->info.input_semantic_index[i]);
122 draw_emit_vertex_attr(vinfo, EMIT_4F, interp, src);
125 softpipe->psize_slot = draw_find_shader_output(softpipe->draw,
126 TGSI_SEMANTIC_PSIZE, 0);
127 if (softpipe->psize_slot > 0) {
128 draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_CONSTANT,
129 softpipe->psize_slot);
132 draw_compute_vertex_size(vinfo);
140 * Called from vbuf module.
142 * Note that there's actually two different vertex layouts in softpipe.
144 * The normal one is computed in softpipe_get_vertex_info() above and is
145 * used by the point/line/tri "setup" code.
147 * The other one (this one) is only used by the vbuf module (which is
148 * not normally used by default but used in testing). For the vbuf module,
149 * we basically want to pass-through the draw module's vertex layout as-is.
150 * When the softpipe vbuf code begins drawing, the normal vertex layout
151 * will come into play again.
154 softpipe_get_vbuf_vertex_info(struct softpipe_context *softpipe)
156 (void) softpipe_get_vertex_info(softpipe);
157 return &softpipe->vertex_info_vbuf;
162 * Recompute cliprect from scissor bounds, scissor enable and surface size.
165 compute_cliprect(struct softpipe_context *sp)
167 /* SP_NEW_FRAMEBUFFER
169 uint surfWidth = sp->framebuffer.width;
170 uint surfHeight = sp->framebuffer.height;
174 if (sp->rasterizer->scissor) {
178 * clip to scissor rect:
180 sp->cliprect.minx = MAX2(sp->scissor.minx, 0);
181 sp->cliprect.miny = MAX2(sp->scissor.miny, 0);
182 sp->cliprect.maxx = MIN2(sp->scissor.maxx, surfWidth);
183 sp->cliprect.maxy = MIN2(sp->scissor.maxy, surfHeight);
186 /* clip to surface bounds */
187 sp->cliprect.minx = 0;
188 sp->cliprect.miny = 0;
189 sp->cliprect.maxx = surfWidth;
190 sp->cliprect.maxy = surfHeight;
196 update_tgsi_samplers( struct softpipe_context *softpipe )
200 softpipe_reset_sampler_varients( softpipe );
202 for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
203 struct softpipe_tex_tile_cache *tc = softpipe->tex_cache[i];
205 struct softpipe_resource *spt = softpipe_resource(tc->texture);
206 if (spt->timestamp != tc->timestamp) {
207 sp_tex_tile_cache_validate_texture( tc );
209 _debug_printf("INV %d %d\n", tc->timestamp, spt->timestamp);
211 tc->timestamp = spt->timestamp;
216 for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
217 struct softpipe_tex_tile_cache *tc = softpipe->vertex_tex_cache[i];
220 struct softpipe_resource *spt = softpipe_resource(tc->texture);
222 if (spt->timestamp != tc->timestamp) {
223 sp_tex_tile_cache_validate_texture(tc);
224 tc->timestamp = spt->timestamp;
231 /* Hopefully this will remain quite simple, otherwise need to pull in
232 * something like the state tracker mechanism.
234 void softpipe_update_derived( struct softpipe_context *softpipe )
236 struct softpipe_screen *sp_screen = softpipe_screen(softpipe->pipe.screen);
238 /* Check for updated textures.
240 if (softpipe->tex_timestamp != sp_screen->timestamp) {
241 softpipe->tex_timestamp = sp_screen->timestamp;
242 softpipe->dirty |= SP_NEW_TEXTURE;
245 if (softpipe->dirty & (SP_NEW_SAMPLER |
249 update_tgsi_samplers( softpipe );
251 if (softpipe->dirty & (SP_NEW_RASTERIZER |
254 invalidate_vertex_layout( softpipe );
256 if (softpipe->dirty & (SP_NEW_SCISSOR |
259 compute_cliprect(softpipe);
261 if (softpipe->dirty & (SP_NEW_BLEND |
262 SP_NEW_DEPTH_STENCIL_ALPHA |
265 sp_build_quad_pipeline(softpipe);