brw_context.c revision 6ef27b88e6f767cd476676b33cb7c4ea6922234e 
1/*
2 Copyright (C) Intel Corp.  2006.  All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
5
6 Permission is hereby granted, free of charge, to any person obtaining
7 a 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, sublicense, 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
16 portions of the Software.
17
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25
26 **********************************************************************/
27 /*
28  * Authors:
29  *   Keith Whitwell <keith@tungstengraphics.com>
30  */
31
32
33#include "brw_context.h"
34#include "brw_defines.h"
35#include "brw_draw.h"
36#include "brw_vs.h"
37#include "imports.h"
38#include "intel_tex.h"
39#include "intel_blit.h"
40#include "intel_batchbuffer.h"
41
42#include "utils.h"
43#include "api_noop.h"
44#include "vtxfmt.h"
45
46#include "shader/shader_api.h"
47
48/***************************************
49 * Mesa's Driver Functions
50 ***************************************/
51
52static const struct dri_extension brw_extensions[] =
53{
54    { "GL_ARB_depth_texture",              NULL },
55    { "GL_ARB_fragment_program",           NULL },
56    { "GL_ARB_shadow",                     NULL },
57    { "GL_EXT_shadow_funcs",               NULL },
58    /* ARB extn won't work if not enabled */
59    { "GL_SGIX_depth_texture",             NULL },
60    { "GL_ARB_texture_env_crossbar",       NULL },
61    { NULL,                                NULL }
62};
63
64static void brwUseProgram(GLcontext *ctx, GLuint program)
65{
66        struct brw_context *brw = brw_context(ctx);
67        struct gl_shader_program *sh_prog;
68        _mesa_use_program(ctx, program);
69        sh_prog = ctx->Shader.CurrentProgram;
70        if (sh_prog) {
71	    if (sh_prog->VertexProgram) {
72		brw->attribs.VertexProgram->Current = sh_prog->VertexProgram;
73		ctx->VertexProgram.Enabled = GL_TRUE;
74	    }else
75		ctx->VertexProgram.Enabled = GL_FALSE;
76
77	    if (sh_prog->FragmentProgram) {
78		brw->attribs.FragmentProgram->Current = sh_prog->FragmentProgram;
79		ctx->FragmentProgram.Enabled = GL_TRUE;
80	    } else
81		ctx->FragmentProgram.Enabled = GL_FALSE;
82	}
83}
84
85static void brwInitProgFuncs( struct dd_function_table *functions )
86{
87   functions->UseProgram = brwUseProgram;
88}
89static void brwInitDriverFunctions( struct dd_function_table *functions )
90{
91   intelInitDriverFunctions( functions );
92   brwInitTextureFuncs( functions );
93   brwInitFragProgFuncs( functions );
94   brwInitProgFuncs( functions );
95}
96
97
98static void brw_init_attribs( struct brw_context *brw )
99{
100   GLcontext *ctx = &brw->intel.ctx;
101
102   brw->attribs.Color = &ctx->Color;
103   brw->attribs.Depth = &ctx->Depth;
104   brw->attribs.Fog = &ctx->Fog;
105   brw->attribs.Hint = &ctx->Hint;
106   brw->attribs.Light = &ctx->Light;
107   brw->attribs.Line = &ctx->Line;
108   brw->attribs.Point = &ctx->Point;
109   brw->attribs.Polygon = &ctx->Polygon;
110   brw->attribs.Scissor = &ctx->Scissor;
111   brw->attribs.Stencil = &ctx->Stencil;
112   brw->attribs.Texture = &ctx->Texture;
113   brw->attribs.Transform = &ctx->Transform;
114   brw->attribs.Viewport = &ctx->Viewport;
115   brw->attribs.VertexProgram = &ctx->VertexProgram;
116   brw->attribs.FragmentProgram = &ctx->FragmentProgram;
117   brw->attribs.PolygonStipple = &ctx->PolygonStipple[0];
118}
119
120
121GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
122			    __DRIcontextPrivate *driContextPriv,
123			    void *sharedContextPrivate)
124{
125   struct dd_function_table functions;
126   struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
127   struct intel_context *intel = &brw->intel;
128   GLcontext *ctx = &intel->ctx;
129
130   if (!brw) {
131      _mesa_printf("%s: failed to alloc context\n", __FUNCTION__);
132      return GL_FALSE;
133   }
134
135   brwInitVtbl( brw );
136   brwInitDriverFunctions( &functions );
137
138   if (!intelInitContext( intel, mesaVis, driContextPriv,
139			  sharedContextPrivate, &functions )) {
140      _mesa_printf("%s: failed to init intel context\n", __FUNCTION__);
141      FREE(brw);
142      return GL_FALSE;
143   }
144
145   ctx->Const.MaxTextureUnits = BRW_MAX_TEX_UNIT;
146   ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
147   ctx->Const.MaxTextureCoordUnits = BRW_MAX_TEX_UNIT;
148
149
150   /* Advertise the full hardware capabilities.  The new memory
151    * manager should cope much better with overload situations:
152    */
153   ctx->Const.MaxTextureLevels = 12;
154   ctx->Const.Max3DTextureLevels = 9;
155   ctx->Const.MaxCubeTextureLevels = 12;
156   ctx->Const.MaxTextureRectSize = (1<<11);
157   ctx->Const.MaxTextureUnits = BRW_MAX_TEX_UNIT;
158
159/*    ctx->Const.MaxNativeVertexProgramTemps = 32; */
160
161
162   driInitExtensions( ctx, brw_extensions, GL_FALSE );
163
164   brw_init_attribs( brw );
165   brw_init_metaops( brw );
166   brw_init_state( brw );
167
168   brw->state.dirty.mesa = ~0;
169   brw->state.dirty.brw = ~0;
170
171   memset(&brw->wm.bind, ~0, sizeof(brw->wm.bind));
172
173   brw->emit_state_always = 0;
174
175   ctx->FragmentProgram._MaintainTexEnvProgram = 1;
176
177   brw_draw_init( brw );
178
179   brw_ProgramCacheInit( ctx );
180
181   brw_FrameBufferTexInit( brw );
182
183   return GL_TRUE;
184}
185
186