i915_context.c revision 1e645b365900cf1c71ca5594bd6b549a1f203040 
1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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.
25 *
26 **************************************************************************/
27
28#include "i915_context.h"
29#include "imports.h"
30#include "intel_tex.h"
31#include "intel_tris.h"
32#include "tnl/t_context.h"
33#include "tnl/t_pipeline.h"
34#include "tnl/t_vertex.h"
35
36#include "swrast/swrast.h"
37#include "swrast_setup/swrast_setup.h"
38#include "tnl/tnl.h"
39
40#include "utils.h"
41#include "i915_reg.h"
42
43#include "intel_regions.h"
44#include "intel_batchbuffer.h"
45#include "intel_tris.h"
46#include "intel_span.h"
47#include "intel_pixel.h"
48
49/***************************************
50 * Mesa's Driver Functions
51 ***************************************/
52
53static const struct dri_extension i915_extensions[] = {
54   {"GL_ARB_depth_texture", NULL},
55   {"GL_ARB_fragment_program", NULL},
56   {"GL_ARB_shadow", NULL},
57   {"GL_ARB_texture_non_power_of_two", NULL},
58   {"GL_EXT_shadow_funcs", NULL},
59   /* ARB extn won't work if not enabled */
60   {"GL_SGIX_depth_texture", NULL},
61   {NULL, NULL}
62};
63
64/* Override intel default.
65 */
66static void
67i915InvalidateState(GLcontext * ctx, GLuint new_state)
68{
69   _swrast_InvalidateState(ctx, new_state);
70   _swsetup_InvalidateState(ctx, new_state);
71   _vbo_InvalidateState(ctx, new_state);
72   _tnl_InvalidateState(ctx, new_state);
73   _tnl_invalidate_vertex_state(ctx, new_state);
74   intel_context(ctx)->NewGLState |= new_state;
75
76   /* Todo: gather state values under which tracked parameters become
77    * invalidated, add callbacks for things like
78    * ProgramLocalParameters, etc.
79    */
80   {
81      struct i915_fragment_program *p =
82         (struct i915_fragment_program *) ctx->FragmentProgram._Current;
83      if (p && p->nr_params)
84         p->params_uptodate = 0;
85   }
86
87   if (new_state & (_NEW_FOG | _NEW_HINT | _NEW_PROGRAM))
88      i915_update_fog(ctx);
89}
90
91
92static void
93i915InitDriverFunctions(struct dd_function_table *functions)
94{
95   intelInitDriverFunctions(functions);
96   i915InitStateFunctions(functions);
97   i915InitTextureFuncs(functions);
98   i915InitFragProgFuncs(functions);
99   functions->UpdateState = i915InvalidateState;
100}
101
102
103extern const struct tnl_pipeline_stage *intel_pipeline[];
104
105GLboolean
106i915CreateContext(const __GLcontextModes * mesaVis,
107                  __DRIcontextPrivate * driContextPriv,
108                  void *sharedContextPrivate)
109{
110   struct dd_function_table functions;
111   struct i915_context *i915 =
112      (struct i915_context *) CALLOC_STRUCT(i915_context);
113   struct intel_context *intel = &i915->intel;
114   GLcontext *ctx = &intel->ctx;
115
116   if (!i915)
117      return GL_FALSE;
118
119   if (0)
120      _mesa_printf("\ntexmem-0-3 branch\n\n");
121
122   i915InitVtbl(i915);
123   i915InitMetaFuncs(i915);
124
125   i915InitDriverFunctions(&functions);
126
127   if (!intelInitContext(intel, mesaVis, driContextPriv,
128                         sharedContextPrivate, &functions)) {
129      FREE(i915);
130      return GL_FALSE;
131   }
132
133   /* Initialize swrast, tnl driver tables: */
134   intelInitSpanFuncs(ctx);
135   intelInitTriFuncs(ctx);
136
137   /* Install the customized pipeline: */
138   _tnl_destroy_pipeline(ctx);
139   _tnl_install_pipeline(ctx, intel_pipeline);
140
141   if (intel->no_rast)
142      FALLBACK(intel, INTEL_FALLBACK_USER, 1);
143
144   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
145   ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
146   ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
147
148
149   /* Advertise the full hardware capabilities.  The new memory
150    * manager should cope much better with overload situations:
151    */
152   ctx->Const.MaxTextureLevels = 12;
153   ctx->Const.Max3DTextureLevels = 9;
154   ctx->Const.MaxCubeTextureLevels = 12;
155   ctx->Const.MaxTextureRectSize = (1 << 11);
156   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
157
158   /* GL_ARB_fragment_program limits - don't think Mesa actually
159    * validates programs against these, and in any case one ARB
160    * instruction can translate to more than one HW instruction, so
161    * we'll still have to check and fallback each time.
162    */
163   ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
164   ctx->Const.FragmentProgram.MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
165   ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
166   ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
167   ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
168   ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
169                                                       I915_MAX_TEX_INSN);
170   ctx->Const.FragmentProgram.MaxNativeTexIndirections =
171      I915_MAX_TEX_INDIRECT;
172   ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
173
174   ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
175   ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
176
177   driInitExtensions(ctx, i915_extensions, GL_FALSE);
178
179
180   _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
181                      36 * sizeof(GLfloat));
182
183   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
184
185   i915InitState(i915);
186
187   return GL_TRUE;
188}
189