i915_context.c revision 4b4632f94c726c19d3c1efd05ceb5770a430cefd 
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 "array_cache/acache.h"
40
41#include "utils.h"
42#include "i915_reg.h"
43
44/***************************************
45 * Mesa's Driver Functions
46 ***************************************/
47
48static const struct dri_extension i915_extensions[] =
49{
50    { "GL_ARB_depth_texture",              NULL },
51    { "GL_ARB_fragment_program",           NULL },
52    { "GL_ARB_shadow",                     NULL },
53    { "GL_ARB_texture_env_crossbar",       NULL },
54    { "GL_EXT_shadow_funcs",               NULL },
55    /* ARB extn won't work if not enabled */
56    { "GL_SGIX_depth_texture",             NULL },
57    { NULL,                                NULL }
58};
59
60/* Override intel default.
61 */
62static void i915InvalidateState( GLcontext *ctx, GLuint new_state )
63{
64   _swrast_InvalidateState( ctx, new_state );
65   _swsetup_InvalidateState( ctx, new_state );
66   _ac_InvalidateState( ctx, new_state );
67   _tnl_InvalidateState( ctx, new_state );
68   _tnl_invalidate_vertex_state( ctx, new_state );
69   INTEL_CONTEXT(ctx)->NewGLState |= new_state;
70
71   /* Todo: gather state values under which tracked parameters become
72    * invalidated, add callbacks for things like
73    * ProgramLocalParameters, etc.
74    */
75   {
76      struct i915_fragment_program *p =
77	 (struct i915_fragment_program *)ctx->FragmentProgram._Current;
78      if (p && p->nr_params)
79	 p->params_uptodate = 0;
80   }
81
82   if (new_state & (_NEW_FOG|_NEW_HINT|_NEW_PROGRAM))
83      i915_update_fog(ctx);
84}
85
86
87static void i915InitDriverFunctions( struct dd_function_table *functions )
88{
89   intelInitDriverFunctions( functions );
90   i915InitStateFunctions( functions );
91   i915InitTextureFuncs( functions );
92   i915InitFragProgFuncs( functions );
93   functions->UpdateState = i915InvalidateState;
94}
95
96
97
98GLboolean i915CreateContext( const __GLcontextModes *mesaVis,
99			    __DRIcontextPrivate *driContextPriv,
100			    void *sharedContextPrivate)
101{
102   struct dd_function_table functions;
103   i915ContextPtr i915 = (i915ContextPtr) CALLOC_STRUCT(i915_context);
104   intelContextPtr intel = &i915->intel;
105   GLcontext *ctx = &intel->ctx;
106   GLuint i;
107
108   if (!i915) return GL_FALSE;
109
110   i915InitVtbl( i915 );
111
112   i915InitDriverFunctions( &functions );
113
114   if (!intelInitContext( intel, mesaVis, driContextPriv,
115			  sharedContextPrivate, &functions )) {
116      FREE(i915);
117      return GL_FALSE;
118   }
119
120   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
121   ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
122   ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
123
124   intel->nr_heaps = 1;
125   intel->texture_heaps[0] =
126      driCreateTextureHeap( 0, intel,
127			    intel->intelScreen->tex.size,
128			    12,
129			    I830_NR_TEX_REGIONS,
130			    intel->sarea->texList,
131			    (unsigned *) & intel->sarea->texAge,
132			    & intel->swapped,
133			    sizeof( struct i915_texture_object ),
134			    (destroy_texture_object_t *)intelDestroyTexObj );
135
136   /* FIXME: driCalculateMaxTextureLevels assumes that mipmaps are
137    * tightly packed, but they're not in Intel graphics
138    * hardware.
139    */
140   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
141   i = driQueryOptioni( &intel->optionCache, "allow_large_textures");
142   driCalculateMaxTextureLevels( intel->texture_heaps,
143				 intel->nr_heaps,
144				 &intel->ctx.Const,
145				 4,
146				 11, /* max 2D texture size is 2048x2048 */
147				 8,  /* 3D texture */
148				 11, /* cube texture. */
149				 11, /* rect texture */
150				 12,
151				 GL_FALSE,
152				 i );
153
154   /* GL_ARB_fragment_program limits - don't think Mesa actually
155    * validates programs against these, and in any case one ARB
156    * instruction can translate to more than one HW instruction, so
157    * we'll still have to check and fallback each time.
158    */
159
160   ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
161   ctx->Const.FragmentProgram.MaxNativeAttribs = 11; /* 8 tex, 2 color, fog */
162   ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
163   ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
164   ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
165   ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
166						I915_MAX_TEX_INSN);
167   ctx->Const.FragmentProgram.MaxNativeTexIndirections = I915_MAX_TEX_INDIRECT;
168   ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
169   ctx->_MaintainTexEnvProgram = GL_TRUE;
170
171
172   driInitExtensions( ctx, i915_extensions, GL_FALSE );
173
174
175   _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12,
176		       36 * sizeof(GLfloat) );
177
178   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
179
180   i915InitState( i915 );
181
182   return GL_TRUE;
183}
184
185