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 #include "../glsl/ralloc.h"
40
41 #include "i915_reg.h"
42 #include "i915_program.h"
43
44 #include "intel_span.h"
45
46 /***************************************
47 * Mesa's Driver Functions
48 ***************************************/
49
50 /* Override intel default.
51 */
52 static void
i915InvalidateState(struct gl_context * ctx,GLuint new_state)53 i915InvalidateState(struct gl_context * ctx, GLuint new_state)
54 {
55 _swrast_InvalidateState(ctx, new_state);
56 _swsetup_InvalidateState(ctx, new_state);
57 _vbo_InvalidateState(ctx, new_state);
58 _tnl_InvalidateState(ctx, new_state);
59 _tnl_invalidate_vertex_state(ctx, new_state);
60 intel_context(ctx)->NewGLState |= new_state;
61
62 /* Todo: gather state values under which tracked parameters become
63 * invalidated, add callbacks for things like
64 * ProgramLocalParameters, etc.
65 */
66 {
67 struct i915_fragment_program *p =
68 (struct i915_fragment_program *) ctx->FragmentProgram._Current;
69 if (p && p->nr_params)
70 p->params_uptodate = 0;
71 }
72
73 if (new_state & (_NEW_STENCIL | _NEW_BUFFERS | _NEW_POLYGON))
74 i915_update_stencil(ctx);
75 if (new_state & (_NEW_LIGHT))
76 i915_update_provoking_vertex(ctx);
77 if (new_state & (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
78 i915_update_program(ctx);
79 if (new_state & (_NEW_PROGRAM | _NEW_POINT))
80 i915_update_sprite_point_enable(ctx);
81 }
82
83
84 static void
i915InitDriverFunctions(struct dd_function_table * functions)85 i915InitDriverFunctions(struct dd_function_table *functions)
86 {
87 intelInitDriverFunctions(functions);
88 i915InitStateFunctions(functions);
89 i915InitFragProgFuncs(functions);
90 functions->UpdateState = i915InvalidateState;
91 }
92
93 /* Note: this is shared with i830. */
94 void
intel_init_texture_formats(struct gl_context * ctx)95 intel_init_texture_formats(struct gl_context *ctx)
96 {
97 struct intel_context *intel = intel_context(ctx);
98 struct intel_screen *intel_screen = intel->intelScreen;
99
100 ctx->TextureFormatSupported[MESA_FORMAT_ARGB8888] = true;
101 if (intel_screen->deviceID != PCI_CHIP_I830_M &&
102 intel_screen->deviceID != PCI_CHIP_845_G)
103 ctx->TextureFormatSupported[MESA_FORMAT_XRGB8888] = true;
104 ctx->TextureFormatSupported[MESA_FORMAT_ARGB4444] = true;
105 ctx->TextureFormatSupported[MESA_FORMAT_ARGB1555] = true;
106 ctx->TextureFormatSupported[MESA_FORMAT_RGB565] = true;
107 ctx->TextureFormatSupported[MESA_FORMAT_L8] = true;
108 ctx->TextureFormatSupported[MESA_FORMAT_A8] = true;
109 ctx->TextureFormatSupported[MESA_FORMAT_I8] = true;
110 ctx->TextureFormatSupported[MESA_FORMAT_AL88] = true;
111
112 /* Depth and stencil */
113 ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = true;
114 ctx->TextureFormatSupported[MESA_FORMAT_X8_Z24] = true;
115 ctx->TextureFormatSupported[MESA_FORMAT_S8] = intel->has_separate_stencil;
116
117 /*
118 * This was disabled in initial FBO enabling to avoid combinations
119 * of depth+stencil that wouldn't work together. We since decided
120 * that it was OK, since it's up to the app to come up with the
121 * combo that actually works, so this can probably be re-enabled.
122 */
123 /*
124 ctx->TextureFormatSupported[MESA_FORMAT_Z16] = true;
125 ctx->TextureFormatSupported[MESA_FORMAT_Z24] = true;
126 */
127
128 /* ctx->Extensions.MESA_ycbcr_texture */
129 ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = true;
130 ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = true;
131
132 /* GL_3DFX_texture_compression_FXT1 */
133 ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = true;
134 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = true;
135
136 /* GL_EXT_texture_compression_s3tc */
137 ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = true;
138 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = true;
139 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = true;
140 ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = true;
141 }
142
143 extern const struct tnl_pipeline_stage *intel_pipeline[];
144
145 bool
i915CreateContext(int api,const struct gl_config * mesaVis,__DRIcontext * driContextPriv,unsigned major_version,unsigned minor_version,unsigned * error,void * sharedContextPrivate)146 i915CreateContext(int api,
147 const struct gl_config * mesaVis,
148 __DRIcontext * driContextPriv,
149 unsigned major_version,
150 unsigned minor_version,
151 unsigned *error,
152 void *sharedContextPrivate)
153 {
154 struct dd_function_table functions;
155 struct i915_context *i915 = rzalloc(NULL, struct i915_context);
156 struct intel_context *intel = &i915->intel;
157 struct gl_context *ctx = &intel->ctx;
158
159 if (!i915) {
160 *error = __DRI_CTX_ERROR_NO_MEMORY;
161 return false;
162 }
163
164 i915InitVtbl(i915);
165
166 i915InitDriverFunctions(&functions);
167
168 if (!intelInitContext(intel, api, mesaVis, driContextPriv,
169 sharedContextPrivate, &functions)) {
170 *error = __DRI_CTX_ERROR_NO_MEMORY;
171 return false;
172 }
173
174 /* Now that the extension bits are known, filter against the requested API
175 * and version.
176 */
177 switch (api) {
178 case API_OPENGL: {
179 const unsigned max_version =
180 (ctx->Extensions.ARB_fragment_shader &&
181 ctx->Extensions.ARB_occlusion_query) ? 20 : 15;
182 const unsigned req_version = major_version * 10 + minor_version;
183
184 if (req_version > max_version) {
185 *error = __DRI_CTX_ERROR_BAD_VERSION;
186 return false;
187 }
188 break;
189 }
190 case API_OPENGLES:
191 case API_OPENGLES2:
192 break;
193 default:
194 *error = __DRI_CTX_ERROR_BAD_API;
195 return false;
196 }
197
198 intel_init_texture_formats(ctx);
199
200 _math_matrix_ctr(&intel->ViewportMatrix);
201
202 /* Initialize swrast, tnl driver tables: */
203 intelInitSpanFuncs(ctx);
204 intelInitTriFuncs(ctx);
205
206 /* Install the customized pipeline: */
207 _tnl_destroy_pipeline(ctx);
208 _tnl_install_pipeline(ctx, intel_pipeline);
209
210 if (intel->no_rast)
211 FALLBACK(intel, INTEL_FALLBACK_USER, 1);
212
213 ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
214 ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
215 ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
216 ctx->Const.MaxVarying = I915_TEX_UNITS;
217 ctx->Const.MaxCombinedTextureImageUnits =
218 ctx->Const.MaxVertexTextureImageUnits +
219 ctx->Const.MaxTextureImageUnits;
220
221 /* Advertise the full hardware capabilities. The new memory
222 * manager should cope much better with overload situations:
223 */
224 ctx->Const.MaxTextureLevels = 12;
225 ctx->Const.Max3DTextureLevels = 9;
226 ctx->Const.MaxCubeTextureLevels = 12;
227 ctx->Const.MaxTextureRectSize = (1 << 11);
228 ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
229
230 ctx->Const.MaxTextureMaxAnisotropy = 4.0;
231
232 /* GL_ARB_fragment_program limits - don't think Mesa actually
233 * validates programs against these, and in any case one ARB
234 * instruction can translate to more than one HW instruction, so
235 * we'll still have to check and fallback each time.
236 */
237 ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
238 ctx->Const.FragmentProgram.MaxNativeAttribs = 11; /* 8 tex, 2 color, fog */
239 ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
240 ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
241 ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
242 ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
243 I915_MAX_TEX_INSN);
244 ctx->Const.FragmentProgram.MaxNativeTexIndirections =
245 I915_MAX_TEX_INDIRECT;
246 ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
247 ctx->Const.FragmentProgram.MaxEnvParams =
248 MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
249 ctx->Const.FragmentProgram.MaxEnvParams);
250
251 /* i915 stores all values in single-precision floats. Values aren't set
252 * for other program targets because software is used for those targets.
253 */
254 ctx->Const.FragmentProgram.MediumFloat.RangeMin = 127;
255 ctx->Const.FragmentProgram.MediumFloat.RangeMax = 127;
256 ctx->Const.FragmentProgram.MediumFloat.Precision = 23;
257 ctx->Const.FragmentProgram.LowFloat = ctx->Const.FragmentProgram.HighFloat =
258 ctx->Const.FragmentProgram.MediumFloat;
259 ctx->Const.FragmentProgram.MediumInt.RangeMin = 24;
260 ctx->Const.FragmentProgram.MediumInt.RangeMax = 24;
261 ctx->Const.FragmentProgram.MediumInt.Precision = 0;
262 ctx->Const.FragmentProgram.LowInt = ctx->Const.FragmentProgram.HighInt =
263 ctx->Const.FragmentProgram.MediumInt;
264
265 ctx->FragmentProgram._MaintainTexEnvProgram = true;
266
267 /* FINISHME: Are there other options that should be enabled for software
268 * FINISHME: vertex shaders?
269 */
270 ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitCondCodes = true;
271
272 struct gl_shader_compiler_options *const fs_options =
273 & ctx->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
274 fs_options->MaxIfDepth = 0;
275 fs_options->EmitNoNoise = true;
276 fs_options->EmitNoPow = true;
277 fs_options->EmitNoMainReturn = true;
278 fs_options->EmitNoIndirectInput = true;
279 fs_options->EmitNoIndirectOutput = true;
280 fs_options->EmitNoIndirectUniform = true;
281 fs_options->EmitNoIndirectTemp = true;
282
283 ctx->Const.MaxDrawBuffers = 1;
284
285 _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
286 36 * sizeof(GLfloat));
287
288 intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
289
290 i915InitState(i915);
291
292 /* Always enable pixel fog. Vertex fog using fog coord will conflict
293 * with fog code appended onto fragment program.
294 */
295 _tnl_allow_vertex_fog(ctx, 0);
296 _tnl_allow_pixel_fog(ctx, 1);
297
298 return true;
299 }
300