1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
26 #include "draw/draw_context.h"
27 #include "draw/draw_vbuf.h"
28 #include "util/u_inlines.h"
29 #include "pipe/p_state.h"
31 #include "svga_context.h"
32 #include "svga_swtnl.h"
33 #include "svga_state.h"
35 #include "svga_swtnl_private.h"
38 #define SVGA_POINT_ADJ_X -0.375
39 #define SVGA_POINT_ADJ_Y -0.5
41 #define SVGA_LINE_ADJ_X -0.5
42 #define SVGA_LINE_ADJ_Y -0.5
44 #define SVGA_TRIANGLE_ADJ_X -0.375
45 #define SVGA_TRIANGLE_ADJ_Y -0.5
48 static void set_draw_viewport( struct svga_context *svga )
50 struct pipe_viewport_state vp = svga->curr.viewport;
54 switch (svga->curr.reduced_prim) {
55 case PIPE_PRIM_POINTS:
56 adjx = SVGA_POINT_ADJ_X;
57 adjy = SVGA_POINT_ADJ_Y;
60 /* XXX: This is to compensate for the fact that wide lines are
61 * going to be drawn with triangles, but we're not catching all
62 * cases where that will happen.
64 if (svga->curr.rast->templ.line_width > 1.0)
66 adjx = SVGA_LINE_ADJ_X + 0.175;
67 adjy = SVGA_LINE_ADJ_Y - 0.175;
70 adjx = SVGA_LINE_ADJ_X;
71 adjy = SVGA_LINE_ADJ_Y;
74 case PIPE_PRIM_TRIANGLES:
75 adjx += SVGA_TRIANGLE_ADJ_X;
76 adjy += SVGA_TRIANGLE_ADJ_Y;
80 vp.translate[0] += adjx;
81 vp.translate[1] += adjy;
83 draw_set_viewport_state(svga->swtnl.draw, &vp);
86 static int update_swtnl_draw( struct svga_context *svga,
89 draw_flush( svga->swtnl.draw );
91 if (dirty & SVGA_NEW_VS)
92 draw_bind_vertex_shader(svga->swtnl.draw,
93 svga->curr.vs->draw_shader);
95 if (dirty & SVGA_NEW_VBUFFER)
96 draw_set_vertex_buffers(svga->swtnl.draw,
97 svga->curr.num_vertex_buffers,
100 if (dirty & SVGA_NEW_VELEMENT)
101 draw_set_vertex_elements(svga->swtnl.draw,
102 svga->curr.velems->count,
103 svga->curr.velems->velem );
105 if (dirty & SVGA_NEW_CLIP)
106 draw_set_clip_state(svga->swtnl.draw,
109 if (dirty & (SVGA_NEW_VIEWPORT |
110 SVGA_NEW_REDUCED_PRIMITIVE |
112 set_draw_viewport( svga );
114 if (dirty & SVGA_NEW_RAST)
115 draw_set_rasterizer_state(svga->swtnl.draw,
116 &svga->curr.rast->templ,
117 (void *) svga->curr.rast);
119 if (dirty & SVGA_NEW_FRAME_BUFFER)
120 draw_set_mrd(svga->swtnl.draw,
121 svga->curr.depthscale);
127 struct svga_tracked_state svga_update_swtnl_draw =
129 "update draw module state",
136 SVGA_NEW_FRAME_BUFFER |
137 SVGA_NEW_REDUCED_PRIMITIVE),
142 int svga_swtnl_update_vdecl( struct svga_context *svga )
144 struct svga_vbuf_render *svga_render = svga_vbuf_render(svga->swtnl.backend);
145 struct draw_context *draw = svga->swtnl.draw;
146 struct vertex_info *vinfo = &svga_render->vertex_info;
147 SVGA3dVertexDecl vdecl[PIPE_MAX_ATTRIBS];
148 const enum interp_mode colorInterp =
149 svga->curr.rast->templ.flatshade ? INTERP_CONSTANT : INTERP_LINEAR;
150 const struct svga_fragment_shader *fs = svga->curr.fs;
155 memset(vinfo, 0, sizeof(*vinfo));
156 memset(vdecl, 0, sizeof(vdecl));
158 /* always add position */
159 src = draw_find_shader_output(draw, TGSI_SEMANTIC_POSITION, 0);
160 draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_LINEAR, src);
161 vinfo->attrib[0].emit = EMIT_4F;
162 vdecl[0].array.offset = offset;
163 vdecl[0].identity.type = SVGA3D_DECLTYPE_FLOAT4;
164 vdecl[0].identity.usage = SVGA3D_DECLUSAGE_POSITIONT;
165 vdecl[0].identity.usageIndex = 0;
169 for (i = 0; i < fs->base.info.num_inputs; i++) {
170 unsigned name = fs->base.info.input_semantic_name[i];
171 unsigned index = fs->base.info.input_semantic_index[i];
172 src = draw_find_shader_output(draw, name, index);
173 vdecl[nr_decls].array.offset = offset;
174 vdecl[nr_decls].identity.usageIndex = fs->base.info.input_semantic_index[i];
177 case TGSI_SEMANTIC_COLOR:
178 draw_emit_vertex_attr(vinfo, EMIT_4F, colorInterp, src);
179 vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_COLOR;
180 vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT4;
184 case TGSI_SEMANTIC_GENERIC:
185 draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, src);
186 vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_TEXCOORD;
187 vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT4;
188 vdecl[nr_decls].identity.usageIndex += 1;
192 case TGSI_SEMANTIC_FOG:
193 draw_emit_vertex_attr(vinfo, EMIT_1F, INTERP_PERSPECTIVE, src);
194 vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_TEXCOORD;
195 vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT1;
196 assert(vdecl[nr_decls].identity.usageIndex == 0);
200 case TGSI_SEMANTIC_POSITION:
201 /* generated internally, not a vertex shader output */
208 draw_compute_vertex_size(vinfo);
210 svga_render->vdecl_count = nr_decls;
211 for (i = 0; i < svga_render->vdecl_count; i++)
212 vdecl[i].array.stride = offset;
214 if (memcmp(svga_render->vdecl, vdecl, sizeof(vdecl)) == 0)
217 memcpy(svga_render->vdecl, vdecl, sizeof(vdecl));
218 svga->swtnl.new_vdecl = TRUE;
224 static int update_swtnl_vdecl( struct svga_context *svga,
227 return svga_swtnl_update_vdecl( svga );
231 struct svga_tracked_state svga_update_swtnl_vdecl =
233 "update draw module vdecl",