1 /* -*- mode: c; c-basic-offset: 3 -*-
3 * Copyright 2000 VA Linux Systems Inc., Fremont, California.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice (including the next
15 * paragraph) shall be included in all copies or substantial portions of the
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * VA LINUX SYSTEMS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
23 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * Device driver interface functions for 3Dfx based cards.
31 * \author Gareth Hughes <gareth@valinux.com> (Original rewrite 29 Sep - 1 Oct 2000)
32 * \author Brian Paul <brianp@valinux.com>
35 #include "tdfx_context.h"
37 #include "tdfx_lock.h"
38 #include "tdfx_pixels.h"
41 #include "main/context.h"
44 /* These are used in calls to FX_grColorMaskv() */
45 const GLboolean false4[4] = { GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE };
46 const GLboolean true4[4] = { GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE };
50 /* KW: Put the word Mesa in the render string because quakeworld
51 * checks for this rather than doing a glGet(GL_MAX_TEXTURE_SIZE).
54 static const GLubyte *tdfxDDGetString( struct gl_context *ctx, GLenum name )
56 tdfxContextPtr fxMesa = (tdfxContextPtr) ctx->DriverCtx;
61 /* The renderer string must be per-context state to handle
62 * multihead correctly.
64 char *const buffer = fxMesa->rendererString;
67 LOCK_HARDWARE(fxMesa);
68 strncpy(hardware, fxMesa->Glide.grGetString(GR_HARDWARE),
70 hardware[sizeof(hardware) - 1] = '\0';
71 UNLOCK_HARDWARE(fxMesa);
73 if ((strncmp(hardware, "Voodoo3", 7) == 0)
74 || (strncmp(hardware, "Voodoo4", 7) == 0)
75 || (strncmp(hardware, "Voodoo5", 7) == 0)) {
78 else if (strncmp(hardware, "Voodoo Banshee", 14) == 0) {
79 strcpy(&hardware[6], "Banshee");
82 /* unexpected result: replace spaces with hyphens */
84 for (i = 0; i < sizeof(hardware) && hardware[i]; i++) {
85 if (hardware[i] == ' ' || hardware[i] == '\t') {
91 (void) driGetRendererString(buffer, hardware, 0);
92 return (const GLubyte *) buffer;
95 return (const GLubyte *)"VA Linux Systems, Inc.";
103 tdfxBeginQuery(struct gl_context *ctx, struct gl_query_object *q)
105 tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
109 if (q->Target == GL_SAMPLES_PASSED_ARB) {
110 LOCK_HARDWARE(fxMesa);
111 fxMesa->Glide.grFinish();
112 fxMesa->Glide.grReset(GR_STATS_PIXELS);
113 UNLOCK_HARDWARE(fxMesa);
119 tdfxEndQuery(struct gl_context *ctx, struct gl_query_object *q)
121 tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
126 if (q->Target == GL_SAMPLES_PASSED_ARB) {
127 LOCK_HARDWARE(fxMesa);
128 fxMesa->Glide.grFinish();
130 fxMesa->Glide.grGet(GR_STATS_PIXELS_DEPTHFUNC_FAIL, sizeof(FxI32),
132 fxMesa->Glide.grGet(GR_STATS_PIXELS_IN, sizeof(FxI32), &total_pixels);
134 q->Result = total_pixels - z_fail_pixels;
136 /* Apparently, people have seen z_fail_pixels > total_pixels under
137 * some conditions on some 3Dfx hardware. The occlusion query spec
138 * requires that we clamp to 0.
146 UNLOCK_HARDWARE(fxMesa);
151 #define VISUAL_EQUALS_RGBA(vis, r, g, b, a) \
152 ((vis->redBits == r) && \
153 (vis->greenBits == g) && \
154 (vis->blueBits == b) && \
155 (vis->alphaBits == a))
157 void tdfxDDInitDriverFuncs( const struct gl_config *visual,
158 struct dd_function_table *functions )
160 if ( MESA_VERBOSE & VERBOSE_DRIVER ) {
161 fprintf( stderr, "tdfx: %s()\n", __FUNCTION__ );
164 functions->GetString = tdfxDDGetString;
165 functions->BeginQuery = tdfxBeginQuery;
166 functions->EndQuery = tdfxEndQuery;
170 if ( VISUAL_EQUALS_RGBA(visual, 8, 8, 8, 8) )
172 functions->DrawPixels = tdfx_drawpixels_R8G8B8A8;
173 functions->ReadPixels = tdfx_readpixels_R8G8B8A8;
175 else if ( VISUAL_EQUALS_RGBA(visual, 5, 6, 5, 0) )
177 functions->ReadPixels = tdfx_readpixels_R5G6B5;
183 * These are here for lack of a better place.
187 FX_grColorMaskv(struct gl_context *ctx, const GLboolean rgba[4])
189 tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
190 LOCK_HARDWARE(fxMesa);
191 if (ctx->Visual.redBits == 8) {
193 ASSERT( fxMesa->Glide.grColorMaskExt );
194 fxMesa->Glide.grColorMaskExt(rgba[RCOMP], rgba[GCOMP],
195 rgba[BCOMP], rgba[ACOMP]);
199 /* we never have an alpha buffer */
200 fxMesa->Glide.grColorMask(rgba[RCOMP] || rgba[GCOMP] || rgba[BCOMP],
203 UNLOCK_HARDWARE(fxMesa);
207 FX_grColorMaskv_NoLock(struct gl_context *ctx, const GLboolean rgba[4])
209 tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
210 if (ctx->Visual.redBits == 8) {
212 ASSERT( fxMesa->Glide.grColorMaskExt );
213 fxMesa->Glide.grColorMaskExt(rgba[RCOMP], rgba[GCOMP],
214 rgba[BCOMP], rgba[ACOMP]);
218 /* we never have an alpha buffer */
219 fxMesa->Glide.grColorMask(rgba[RCOMP] || rgba[GCOMP] || rgba[BCOMP],