i915_context.c revision 064ae479a770bf434958d673baf6f7530f642697 
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#include "vbo/vbo.h"
40
41
42#include "utils.h"
43#include "i915_reg.h"
44
45/***************************************
46 * Mesa's Driver Functions
47 ***************************************/
48
49static const struct dri_extension i915_extensions[] =
50{
51    { "GL_ARB_depth_texture",              NULL },
52    { "GL_ARB_fragment_program",           NULL },
53    { "GL_ARB_shadow",                     NULL },
54    { "GL_ARB_texture_env_crossbar",       NULL },
55    { "GL_EXT_shadow_funcs",               NULL },
56    /* ARB extn won't work if not enabled */
57    { "GL_SGIX_depth_texture",             NULL },
58    { NULL,                                NULL }
59};
60
61/* Override intel default.
62 */
63static void i915InvalidateState( GLcontext *ctx, GLuint new_state )
64{
65   _swrast_InvalidateState( ctx, new_state );
66   _swsetup_InvalidateState( ctx, new_state );
67   _vbo_InvalidateState( ctx, new_state );
68   _tnl_InvalidateState( ctx, new_state );
69   _tnl_invalidate_vertex_state( ctx, new_state );
70   INTEL_CONTEXT(ctx)->NewGLState |= new_state;
71
72   /* Todo: gather state values under which tracked parameters become
73    * invalidated, add callbacks for things like
74    * ProgramLocalParameters, etc.
75    */
76   {
77      struct i915_fragment_program *p =
78	 (struct i915_fragment_program *)ctx->FragmentProgram._Current;
79      if (p && p->nr_params)
80	 p->params_uptodate = 0;
81   }
82
83   if (new_state & (_NEW_FOG|_NEW_HINT|_NEW_PROGRAM))
84      i915_update_fog(ctx);
85}
86
87
88static void i915InitDriverFunctions( struct dd_function_table *functions )
89{
90   intelInitDriverFunctions( functions );
91   i915InitStateFunctions( functions );
92   i915InitTextureFuncs( functions );
93   i915InitFragProgFuncs( functions );
94   functions->UpdateState = i915InvalidateState;
95}
96
97
98
99GLboolean i915CreateContext( const __GLcontextModes *mesaVis,
100			    __DRIcontextPrivate *driContextPriv,
101			    void *sharedContextPrivate)
102{
103   struct dd_function_table functions;
104   i915ContextPtr i915 = (i915ContextPtr) CALLOC_STRUCT(i915_context);
105   intelContextPtr intel = &i915->intel;
106   GLcontext *ctx = &intel->ctx;
107   GLuint i;
108
109   if (!i915) return GL_FALSE;
110
111   i915InitVtbl( i915 );
112
113   i915InitDriverFunctions( &functions );
114
115   if (!intelInitContext( intel, mesaVis, driContextPriv,
116			  sharedContextPrivate, &functions )) {
117      FREE(i915);
118      return GL_FALSE;
119   }
120
121   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
122   ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
123   ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
124
125   intel->nr_heaps = 1;
126   intel->texture_heaps[0] =
127      driCreateTextureHeap( 0, intel,
128			    intel->intelScreen->tex.size,
129			    12,
130			    I830_NR_TEX_REGIONS,
131			    intel->sarea->texList,
132			    (unsigned *) & intel->sarea->texAge,
133			    & intel->swapped,
134			    sizeof( struct i915_texture_object ),
135			    (destroy_texture_object_t *)intelDestroyTexObj );
136
137   /* FIXME: driCalculateMaxTextureLevels assumes that mipmaps are
138    * tightly packed, but they're not in Intel graphics
139    * hardware.
140    */
141   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
142   i = driQueryOptioni( &intel->optionCache, "allow_large_textures");
143   driCalculateMaxTextureLevels( intel->texture_heaps,
144				 intel->nr_heaps,
145				 &intel->ctx.Const,
146				 4,
147				 11, /* max 2D texture size is 2048x2048 */
148				 8,  /* 3D texture */
149				 11, /* cube texture. */
150				 11, /* rect texture */
151				 12,
152				 GL_FALSE,
153				 i );
154
155   /* GL_ARB_fragment_program limits - don't think Mesa actually
156    * validates programs against these, and in any case one ARB
157    * instruction can translate to more than one HW instruction, so
158    * we'll still have to check and fallback each time.
159    */
160
161   ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
162   ctx->Const.FragmentProgram.MaxNativeAttribs = 11; /* 8 tex, 2 color, fog */
163   ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
164   ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
165   ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
166   ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
167						I915_MAX_TEX_INSN);
168   ctx->Const.FragmentProgram.MaxNativeTexIndirections = I915_MAX_TEX_INDIRECT;
169   ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
170   ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
171
172
173   driInitExtensions( ctx, i915_extensions, GL_FALSE );
174
175
176   _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12,
177		       36 * sizeof(GLfloat) );
178
179   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
180
181   i915InitState( i915 );
182
183   return GL_TRUE;
184}
185
186