i915_context.c revision f9995b30756140724f41daf963fa06167912be7f 
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 "main/imports.h"
30#include "main/macros.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 "i915_reg.h"
41#include "i915_program.h"
42
43#include "intel_span.h"
44
45/***************************************
46 * Mesa's Driver Functions
47 ***************************************/
48
49/* Override intel default.
50 */
51static void
52i915InvalidateState(struct gl_context * ctx, GLuint new_state)
53{
54   _swrast_InvalidateState(ctx, new_state);
55   _swsetup_InvalidateState(ctx, new_state);
56   _vbo_InvalidateState(ctx, new_state);
57   _tnl_InvalidateState(ctx, new_state);
58   _tnl_invalidate_vertex_state(ctx, new_state);
59   intel_context(ctx)->NewGLState |= new_state;
60
61   /* Todo: gather state values under which tracked parameters become
62    * invalidated, add callbacks for things like
63    * ProgramLocalParameters, etc.
64    */
65   {
66      struct i915_fragment_program *p =
67         (struct i915_fragment_program *) ctx->FragmentProgram._Current;
68      if (p && p->nr_params)
69         p->params_uptodate = 0;
70   }
71
72   if (new_state & (_NEW_FOG | _NEW_HINT | _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
73      i915_update_fog(ctx);
74   if (new_state & (_NEW_STENCIL | _NEW_BUFFERS | _NEW_POLYGON))
75      i915_update_stencil(ctx);
76   if (new_state & (_NEW_LIGHT))
77       i915_update_provoking_vertex(ctx);
78   if (new_state & (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
79       i915_update_program(ctx);
80}
81
82
83static void
84i915InitDriverFunctions(struct dd_function_table *functions)
85{
86   intelInitDriverFunctions(functions);
87   i915InitStateFunctions(functions);
88   i915InitFragProgFuncs(functions);
89   functions->UpdateState = i915InvalidateState;
90}
91
92
93extern const struct tnl_pipeline_stage *intel_pipeline[];
94
95GLboolean
96i915CreateContext(int api,
97		  const struct gl_config * mesaVis,
98                  __DRIcontext * driContextPriv,
99                  void *sharedContextPrivate)
100{
101   struct dd_function_table functions;
102   struct i915_context *i915 =
103      (struct i915_context *) CALLOC_STRUCT(i915_context);
104   struct intel_context *intel = &i915->intel;
105   struct gl_context *ctx = &intel->ctx;
106
107   if (!i915)
108      return GL_FALSE;
109
110   i915InitVtbl(i915);
111
112   i915InitDriverFunctions(&functions);
113
114   if (!intelInitContext(intel, api, mesaVis, driContextPriv,
115                         sharedContextPrivate, &functions)) {
116      FREE(i915);
117      return GL_FALSE;
118   }
119
120   _math_matrix_ctr(&intel->ViewportMatrix);
121
122   /* Initialize swrast, tnl driver tables: */
123   intelInitSpanFuncs(ctx);
124   intelInitTriFuncs(ctx);
125
126   /* Install the customized pipeline: */
127   _tnl_destroy_pipeline(ctx);
128   _tnl_install_pipeline(ctx, intel_pipeline);
129
130   if (intel->no_rast)
131      FALLBACK(intel, INTEL_FALLBACK_USER, 1);
132
133   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
134   ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
135   ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
136   ctx->Const.MaxVarying = I915_TEX_UNITS;
137   ctx->Const.MaxCombinedTextureImageUnits =
138      ctx->Const.MaxVertexTextureImageUnits +
139      ctx->Const.MaxTextureImageUnits;
140
141   /* Advertise the full hardware capabilities.  The new memory
142    * manager should cope much better with overload situations:
143    */
144   ctx->Const.MaxTextureLevels = 12;
145   ctx->Const.Max3DTextureLevels = 9;
146   ctx->Const.MaxCubeTextureLevels = 12;
147   ctx->Const.MaxTextureRectSize = (1 << 11);
148   ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
149
150   ctx->Const.MaxTextureMaxAnisotropy = 4.0;
151
152   /* GL_ARB_fragment_program limits - don't think Mesa actually
153    * validates programs against these, and in any case one ARB
154    * instruction can translate to more than one HW instruction, so
155    * we'll still have to check and fallback each time.
156    */
157   ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
158   ctx->Const.FragmentProgram.MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
159   ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
160   ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
161   ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
162   ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
163                                                       I915_MAX_TEX_INSN);
164   ctx->Const.FragmentProgram.MaxNativeTexIndirections =
165      I915_MAX_TEX_INDIRECT;
166   ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
167   ctx->Const.FragmentProgram.MaxEnvParams =
168      MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
169	   ctx->Const.FragmentProgram.MaxEnvParams);
170
171   ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
172
173   /* FINISHME: Are there other options that should be enabled for software
174    * FINISHME: vertex shaders?
175    */
176   ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitCondCodes = GL_TRUE;
177   ctx->ShaderCompilerOptions[MESA_SHADER_FRAGMENT].EmitNoIfs = GL_TRUE;
178   ctx->ShaderCompilerOptions[MESA_SHADER_FRAGMENT].EmitNoNoise = GL_TRUE;
179
180   ctx->Const.MaxDrawBuffers = 1;
181
182   _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
183                      36 * sizeof(GLfloat));
184
185   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
186
187   i915InitState(i915);
188
189   return GL_TRUE;
190}
191