i915_context.c revision 367b1e35dc1dbeda65709b0ab4f7983d0c7a6cc2 
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_env_crossbar", NULL},
58   {"GL_ARB_texture_non_power_of_two", NULL},
59   {"GL_EXT_shadow_funcs", NULL},
60   /* ARB extn won't work if not enabled */
61   {"GL_SGIX_depth_texture", NULL},
62   {NULL, NULL}
63};
64
65/* Override intel default.
66 */
67static void
68i915InvalidateState(GLcontext * ctx, GLuint new_state)
69{
70   _swrast_InvalidateState(ctx, new_state);
71   _swsetup_InvalidateState(ctx, new_state);
72   _vbo_InvalidateState(ctx, new_state);
73   _tnl_InvalidateState(ctx, new_state);
74   _tnl_invalidate_vertex_state(ctx, new_state);
75   intel_context(ctx)->NewGLState |= new_state;
76
77   /* Todo: gather state values under which tracked parameters become
78    * invalidated, add callbacks for things like
79    * ProgramLocalParameters, etc.
80    */
81   {
82      struct i915_fragment_program *p =
83         (struct i915_fragment_program *) ctx->FragmentProgram._Current;
84      if (p && p->nr_params)
85         p->params_uptodate = 0;
86   }
87
88   if (new_state & (_NEW_FOG | _NEW_HINT | _NEW_PROGRAM))
89      i915_update_fog(ctx);
90}
91
92
93static void
94i915InitDriverFunctions(struct dd_function_table *functions)
95{
96   intelInitDriverFunctions(functions);
97//   intelInitPixelFuncs(functions);
98   i915InitStateFunctions(functions);
99   i915InitTextureFuncs(functions);
100   i915InitFragProgFuncs(functions);
101   functions->UpdateState = i915InvalidateState;
102}
103
104
105extern const struct tnl_pipeline_stage *intel_pipeline[];
106
107GLboolean
108i915CreateContext(const __GLcontextModes * mesaVis,
109                  __DRIcontextPrivate * driContextPriv,
110                  void *sharedContextPrivate)
111{
112   struct dd_function_table functions;
113   struct i915_context *i915 =
114      (struct i915_context *) CALLOC_STRUCT(i915_context);
115   struct intel_context *intel = &i915->intel;
116   GLcontext *ctx = &intel->ctx;
117
118   if (!i915)
119      return GL_FALSE;
120
121   if (0)
122      _mesa_printf("\ntexmem-0-3 branch\n\n");
123
124   i915InitVtbl(i915);
125   i915InitMetaFuncs(i915);
126
127   i915InitDriverFunctions(&functions);
128
129   if (!intelInitContext(intel, mesaVis, driContextPriv,
130                         sharedContextPrivate, &functions)) {
131      FREE(i915);
132      return GL_FALSE;
133   }
134
135   /* Initialize swrast, tnl driver tables: */
136   intelInitSpanFuncs(ctx);
137   intelInitTriFuncs(ctx);
138
139   /* Install the customized pipeline: */
140   _tnl_destroy_pipeline(ctx);
141   _tnl_install_pipeline(ctx, intel_pipeline);
142
143   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
144   ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
145   ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
146
147
148   /* Advertise the full hardware capabilities.  The new memory
149    * manager should cope much better with overload situations:
150    */
151   ctx->Const.MaxTextureLevels = 12;
152   ctx->Const.Max3DTextureLevels = 9;
153   ctx->Const.MaxCubeTextureLevels = 12;
154   ctx->Const.MaxTextureRectSize = (1 << 11);
155   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
156
157   /* GL_ARB_fragment_program limits - don't think Mesa actually
158    * validates programs against these, and in any case one ARB
159    * instruction can translate to more than one HW instruction, so
160    * we'll still have to check and fallback each time.
161    */
162   ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
163   ctx->Const.FragmentProgram.MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
164   ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
165   ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
166   ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
167   ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
168                                                       I915_MAX_TEX_INSN);
169   ctx->Const.FragmentProgram.MaxNativeTexIndirections =
170      I915_MAX_TEX_INDIRECT;
171   ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
172
173   ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
174   ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
175
176   driInitExtensions(ctx, i915_extensions, GL_FALSE);
177
178
179   _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
180                      36 * sizeof(GLfloat));
181
182   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
183
184   i915InitState(i915);
185
186   return GL_TRUE;
187}
188