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1 /**************************************************************************
2  *
3  * Copyright 2003 VMware, Inc.
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 VMWARE 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 
29 #include "main/glheader.h"
30 #include "main/context.h"
31 #include "main/macros.h"
32 #include "main/enums.h"
33 #include "main/fbobject.h"
34 #include "main/dd.h"
35 #include "main/state.h"
36 #include "main/stencil.h"
37 #include "main/viewport.h"
38 #include "tnl/tnl.h"
39 #include "tnl/t_context.h"
40 
41 #include "drivers/common/driverfuncs.h"
42 
43 #include "intel_fbo.h"
44 #include "intel_screen.h"
45 #include "intel_batchbuffer.h"
46 #include "intel_buffers.h"
47 
48 #include "i915_context.h"
49 #include "i915_reg.h"
50 
51 #define FILE_DEBUG_FLAG DEBUG_STATE
52 
53 void
i915_update_stencil(struct gl_context * ctx)54 i915_update_stencil(struct gl_context * ctx)
55 {
56    struct i915_context *i915 = I915_CONTEXT(ctx);
57    GLuint front_ref, front_writemask, front_mask;
58    GLenum front_func, front_fail, front_pass_z_fail, front_pass_z_pass;
59    GLuint back_ref, back_writemask, back_mask;
60    GLenum back_func, back_fail, back_pass_z_fail, back_pass_z_pass;
61    GLuint dirty = 0;
62 
63    /* The 915 considers CW to be "front" for two-sided stencil, so choose
64     * appropriately.
65     */
66    /* _NEW_POLYGON | _NEW_STENCIL */
67    if (ctx->Polygon.FrontFace == GL_CW) {
68       front_ref = _mesa_get_stencil_ref(ctx, 0);
69       front_mask = ctx->Stencil.ValueMask[0];
70       front_writemask = ctx->Stencil.WriteMask[0];
71       front_func = ctx->Stencil.Function[0];
72       front_fail = ctx->Stencil.FailFunc[0];
73       front_pass_z_fail = ctx->Stencil.ZFailFunc[0];
74       front_pass_z_pass = ctx->Stencil.ZPassFunc[0];
75       back_ref = _mesa_get_stencil_ref(ctx, ctx->Stencil._BackFace);
76       back_mask = ctx->Stencil.ValueMask[ctx->Stencil._BackFace];
77       back_writemask = ctx->Stencil.WriteMask[ctx->Stencil._BackFace];
78       back_func = ctx->Stencil.Function[ctx->Stencil._BackFace];
79       back_fail = ctx->Stencil.FailFunc[ctx->Stencil._BackFace];
80       back_pass_z_fail = ctx->Stencil.ZFailFunc[ctx->Stencil._BackFace];
81       back_pass_z_pass = ctx->Stencil.ZPassFunc[ctx->Stencil._BackFace];
82    } else {
83       front_ref = _mesa_get_stencil_ref(ctx, ctx->Stencil._BackFace);
84       front_mask = ctx->Stencil.ValueMask[ctx->Stencil._BackFace];
85       front_writemask = ctx->Stencil.WriteMask[ctx->Stencil._BackFace];
86       front_func = ctx->Stencil.Function[ctx->Stencil._BackFace];
87       front_fail = ctx->Stencil.FailFunc[ctx->Stencil._BackFace];
88       front_pass_z_fail = ctx->Stencil.ZFailFunc[ctx->Stencil._BackFace];
89       front_pass_z_pass = ctx->Stencil.ZPassFunc[ctx->Stencil._BackFace];
90       back_ref = _mesa_get_stencil_ref(ctx, 0);
91       back_mask = ctx->Stencil.ValueMask[0];
92       back_writemask = ctx->Stencil.WriteMask[0];
93       back_func = ctx->Stencil.Function[0];
94       back_fail = ctx->Stencil.FailFunc[0];
95       back_pass_z_fail = ctx->Stencil.ZFailFunc[0];
96       back_pass_z_pass = ctx->Stencil.ZPassFunc[0];
97    }
98 #define set_ctx_bits(reg, mask, set) do{ \
99    GLuint dw = i915->state.Ctx[reg]; \
100    dw &= ~(mask); \
101    dw |= (set); \
102    dirty |= dw != i915->state.Ctx[reg]; \
103    i915->state.Ctx[reg] = dw; \
104 } while(0)
105 
106    /* Set front state. */
107    set_ctx_bits(I915_CTXREG_STATE4,
108                 MODE4_ENABLE_STENCIL_TEST_MASK |
109                 MODE4_ENABLE_STENCIL_WRITE_MASK,
110                 ENABLE_STENCIL_TEST_MASK |
111                 ENABLE_STENCIL_WRITE_MASK |
112                 STENCIL_TEST_MASK(front_mask) |
113                 STENCIL_WRITE_MASK(front_writemask));
114 
115    set_ctx_bits(I915_CTXREG_LIS5,
116                 S5_STENCIL_REF_MASK |
117                 S5_STENCIL_TEST_FUNC_MASK |
118                 S5_STENCIL_FAIL_MASK |
119                 S5_STENCIL_PASS_Z_FAIL_MASK |
120                 S5_STENCIL_PASS_Z_PASS_MASK,
121                 (front_ref << S5_STENCIL_REF_SHIFT) |
122                 (intel_translate_compare_func(front_func) << S5_STENCIL_TEST_FUNC_SHIFT) |
123                 (intel_translate_stencil_op(front_fail) << S5_STENCIL_FAIL_SHIFT) |
124                 (intel_translate_stencil_op(front_pass_z_fail) <<
125                  S5_STENCIL_PASS_Z_FAIL_SHIFT) |
126                 (intel_translate_stencil_op(front_pass_z_pass) <<
127                  S5_STENCIL_PASS_Z_PASS_SHIFT));
128 
129    /* Set back state if different from front. */
130    if (_mesa_stencil_is_two_sided(ctx)) {
131       set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS,
132                    BFO_STENCIL_REF_MASK |
133                    BFO_STENCIL_TEST_MASK |
134                    BFO_STENCIL_FAIL_MASK |
135                    BFO_STENCIL_PASS_Z_FAIL_MASK |
136                    BFO_STENCIL_PASS_Z_PASS_MASK,
137                    BFO_STENCIL_TWO_SIDE |
138                    (back_ref << BFO_STENCIL_REF_SHIFT) |
139                    (intel_translate_compare_func(back_func) << BFO_STENCIL_TEST_SHIFT) |
140                    (intel_translate_stencil_op(back_fail) << BFO_STENCIL_FAIL_SHIFT) |
141                    (intel_translate_stencil_op(back_pass_z_fail) <<
142                     BFO_STENCIL_PASS_Z_FAIL_SHIFT) |
143                    (intel_translate_stencil_op(back_pass_z_pass) <<
144                     BFO_STENCIL_PASS_Z_PASS_SHIFT));
145 
146       set_ctx_bits(I915_CTXREG_BF_STENCIL_MASKS,
147                    BFM_STENCIL_TEST_MASK_MASK |
148                    BFM_STENCIL_WRITE_MASK_MASK,
149                    BFM_STENCIL_TEST_MASK(back_mask) |
150                    BFM_STENCIL_WRITE_MASK(back_writemask));
151    } else {
152       set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS,
153                    BFO_STENCIL_TWO_SIDE, 0);
154    }
155 
156 #undef set_ctx_bits
157 
158    if (dirty)
159       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
160 }
161 
162 static void
i915StencilFuncSeparate(struct gl_context * ctx,GLenum face,GLenum func,GLint ref,GLuint mask)163 i915StencilFuncSeparate(struct gl_context * ctx, GLenum face, GLenum func, GLint ref,
164                         GLuint mask)
165 {
166 }
167 
168 static void
i915StencilMaskSeparate(struct gl_context * ctx,GLenum face,GLuint mask)169 i915StencilMaskSeparate(struct gl_context * ctx, GLenum face, GLuint mask)
170 {
171 }
172 
173 static void
i915StencilOpSeparate(struct gl_context * ctx,GLenum face,GLenum fail,GLenum zfail,GLenum zpass)174 i915StencilOpSeparate(struct gl_context * ctx, GLenum face, GLenum fail, GLenum zfail,
175                       GLenum zpass)
176 {
177 }
178 
179 static void
i915AlphaFunc(struct gl_context * ctx,GLenum func,GLfloat ref)180 i915AlphaFunc(struct gl_context * ctx, GLenum func, GLfloat ref)
181 {
182    struct i915_context *i915 = I915_CONTEXT(ctx);
183    int test = intel_translate_compare_func(func);
184    GLubyte refByte;
185    GLuint dw;
186 
187    UNCLAMPED_FLOAT_TO_UBYTE(refByte, ref);
188 
189    dw = i915->state.Ctx[I915_CTXREG_LIS6];
190    dw &= ~(S6_ALPHA_TEST_FUNC_MASK | S6_ALPHA_REF_MASK);
191    dw |= ((test << S6_ALPHA_TEST_FUNC_SHIFT) |
192 	  (((GLuint) refByte) << S6_ALPHA_REF_SHIFT));
193    if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
194       i915->state.Ctx[I915_CTXREG_LIS6] = dw;
195       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
196    }
197 }
198 
199 /* This function makes sure that the proper enables are
200  * set for LogicOp, Independent Alpha Blend, and Blending.
201  * It needs to be called from numerous places where we
202  * could change the LogicOp or Independent Alpha Blend without subsequent
203  * calls to glEnable.
204  */
205 static void
i915EvalLogicOpBlendState(struct gl_context * ctx)206 i915EvalLogicOpBlendState(struct gl_context * ctx)
207 {
208    struct i915_context *i915 = I915_CONTEXT(ctx);
209    GLuint dw0, dw1;
210 
211    dw0 = i915->state.Ctx[I915_CTXREG_LIS5];
212    dw1 = i915->state.Ctx[I915_CTXREG_LIS6];
213 
214    if (ctx->Color.ColorLogicOpEnabled) {
215       dw0 |= S5_LOGICOP_ENABLE;
216       dw1 &= ~S6_CBUF_BLEND_ENABLE;
217    }
218    else {
219       dw0 &= ~S5_LOGICOP_ENABLE;
220 
221       if (ctx->Color.BlendEnabled) {
222          dw1 |= S6_CBUF_BLEND_ENABLE;
223       }
224       else {
225          dw1 &= ~S6_CBUF_BLEND_ENABLE;
226       }
227    }
228    if (dw0 != i915->state.Ctx[I915_CTXREG_LIS5] ||
229        dw1 != i915->state.Ctx[I915_CTXREG_LIS6]) {
230       i915->state.Ctx[I915_CTXREG_LIS5] = dw0;
231       i915->state.Ctx[I915_CTXREG_LIS6] = dw1;
232 
233       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
234    }
235 }
236 
237 static void
i915BlendColor(struct gl_context * ctx,const GLfloat color[4])238 i915BlendColor(struct gl_context * ctx, const GLfloat color[4])
239 {
240    struct i915_context *i915 = I915_CONTEXT(ctx);
241    GLubyte r, g, b, a;
242    GLuint dw;
243 
244    DBG("%s\n", __func__);
245 
246    UNCLAMPED_FLOAT_TO_UBYTE(r, color[RCOMP]);
247    UNCLAMPED_FLOAT_TO_UBYTE(g, color[GCOMP]);
248    UNCLAMPED_FLOAT_TO_UBYTE(b, color[BCOMP]);
249    UNCLAMPED_FLOAT_TO_UBYTE(a, color[ACOMP]);
250 
251    dw = (a << 24) | (r << 16) | (g << 8) | b;
252    if (dw != i915->state.Blend[I915_BLENDREG_BLENDCOLOR1]) {
253       i915->state.Blend[I915_BLENDREG_BLENDCOLOR1] = dw;
254       I915_STATECHANGE(i915, I915_UPLOAD_BLEND);
255    }
256 }
257 
258 
259 #define DST_BLND_FACT(f) ((f)<<S6_CBUF_DST_BLEND_FACT_SHIFT)
260 #define SRC_BLND_FACT(f) ((f)<<S6_CBUF_SRC_BLEND_FACT_SHIFT)
261 #define DST_ABLND_FACT(f) ((f)<<IAB_DST_FACTOR_SHIFT)
262 #define SRC_ABLND_FACT(f) ((f)<<IAB_SRC_FACTOR_SHIFT)
263 
264 
265 
266 static GLuint
translate_blend_equation(GLenum mode)267 translate_blend_equation(GLenum mode)
268 {
269    switch (mode) {
270    case GL_FUNC_ADD:
271       return BLENDFUNC_ADD;
272    case GL_MIN:
273       return BLENDFUNC_MIN;
274    case GL_MAX:
275       return BLENDFUNC_MAX;
276    case GL_FUNC_SUBTRACT:
277       return BLENDFUNC_SUBTRACT;
278    case GL_FUNC_REVERSE_SUBTRACT:
279       return BLENDFUNC_REVERSE_SUBTRACT;
280    default:
281       return 0;
282    }
283 }
284 
285 static void
i915UpdateBlendState(struct gl_context * ctx)286 i915UpdateBlendState(struct gl_context * ctx)
287 {
288    struct i915_context *i915 = I915_CONTEXT(ctx);
289    GLuint iab = (i915->state.Blend[I915_BLENDREG_IAB] &
290                  ~(IAB_SRC_FACTOR_MASK |
291                    IAB_DST_FACTOR_MASK |
292                    (BLENDFUNC_MASK << IAB_FUNC_SHIFT) | IAB_ENABLE));
293 
294    GLuint lis6 = (i915->state.Ctx[I915_CTXREG_LIS6] &
295                   ~(S6_CBUF_SRC_BLEND_FACT_MASK |
296                     S6_CBUF_DST_BLEND_FACT_MASK | S6_CBUF_BLEND_FUNC_MASK));
297 
298    GLuint eqRGB = ctx->Color.Blend[0].EquationRGB;
299    GLuint eqA = ctx->Color.Blend[0].EquationA;
300    GLuint srcRGB = ctx->Color.Blend[0].SrcRGB;
301    GLuint dstRGB = ctx->Color.Blend[0].DstRGB;
302    GLuint srcA = ctx->Color.Blend[0].SrcA;
303    GLuint dstA = ctx->Color.Blend[0].DstA;
304 
305    if (eqRGB == GL_MIN || eqRGB == GL_MAX) {
306       srcRGB = dstRGB = GL_ONE;
307    }
308 
309    if (eqA == GL_MIN || eqA == GL_MAX) {
310       srcA = dstA = GL_ONE;
311    }
312 
313    lis6 |= SRC_BLND_FACT(intel_translate_blend_factor(srcRGB));
314    lis6 |= DST_BLND_FACT(intel_translate_blend_factor(dstRGB));
315    lis6 |= translate_blend_equation(eqRGB) << S6_CBUF_BLEND_FUNC_SHIFT;
316 
317    iab |= SRC_ABLND_FACT(intel_translate_blend_factor(srcA));
318    iab |= DST_ABLND_FACT(intel_translate_blend_factor(dstA));
319    iab |= translate_blend_equation(eqA) << IAB_FUNC_SHIFT;
320 
321    if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB)
322       iab |= IAB_ENABLE;
323 
324    if (iab != i915->state.Blend[I915_BLENDREG_IAB]) {
325       i915->state.Blend[I915_BLENDREG_IAB] = iab;
326       I915_STATECHANGE(i915, I915_UPLOAD_BLEND);
327    }
328    if (lis6 != i915->state.Ctx[I915_CTXREG_LIS6]) {
329       i915->state.Ctx[I915_CTXREG_LIS6] = lis6;
330       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
331    }
332 
333    /* This will catch a logicop blend equation */
334    i915EvalLogicOpBlendState(ctx);
335 }
336 
337 
338 static void
i915BlendFuncSeparate(struct gl_context * ctx,GLenum srcRGB,GLenum dstRGB,GLenum srcA,GLenum dstA)339 i915BlendFuncSeparate(struct gl_context * ctx, GLenum srcRGB,
340                       GLenum dstRGB, GLenum srcA, GLenum dstA)
341 {
342    i915UpdateBlendState(ctx);
343 }
344 
345 
346 static void
i915BlendEquationSeparate(struct gl_context * ctx,GLenum eqRGB,GLenum eqA)347 i915BlendEquationSeparate(struct gl_context * ctx, GLenum eqRGB, GLenum eqA)
348 {
349    i915UpdateBlendState(ctx);
350 }
351 
352 
353 static void
i915DepthFunc(struct gl_context * ctx,GLenum func)354 i915DepthFunc(struct gl_context * ctx, GLenum func)
355 {
356    struct i915_context *i915 = I915_CONTEXT(ctx);
357    int test = intel_translate_compare_func(func);
358    GLuint dw;
359 
360    DBG("%s\n", __func__);
361 
362    dw = i915->state.Ctx[I915_CTXREG_LIS6];
363    dw &= ~S6_DEPTH_TEST_FUNC_MASK;
364    dw |= test << S6_DEPTH_TEST_FUNC_SHIFT;
365    if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
366       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
367       i915->state.Ctx[I915_CTXREG_LIS6] = dw;
368    }
369 }
370 
371 static void
i915DepthMask(struct gl_context * ctx,GLboolean flag)372 i915DepthMask(struct gl_context * ctx, GLboolean flag)
373 {
374    struct i915_context *i915 = I915_CONTEXT(ctx);
375    GLuint dw;
376 
377    DBG("%s flag (%d)\n", __func__, flag);
378 
379    if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.depthBits)
380       flag = false;
381 
382    dw = i915->state.Ctx[I915_CTXREG_LIS6];
383    if (flag && ctx->Depth.Test)
384       dw |= S6_DEPTH_WRITE_ENABLE;
385    else
386       dw &= ~S6_DEPTH_WRITE_ENABLE;
387    if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
388       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
389       i915->state.Ctx[I915_CTXREG_LIS6] = dw;
390    }
391 }
392 
393 
394 
395 /**
396  * Update the viewport transformation matrix.  Depends on:
397  *  - viewport pos/size
398  *  - depthrange
399  *  - window pos/size or FBO size
400  */
401 void
intelCalcViewport(struct gl_context * ctx)402 intelCalcViewport(struct gl_context * ctx)
403 {
404    struct intel_context *intel = intel_context(ctx);
405    float scale[3], translate[3];
406 
407    _mesa_get_viewport_xform(ctx, 0, scale, translate);
408 
409    if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
410       scale[1] = -scale[1];
411       translate[1] = ctx->DrawBuffer->Height - translate[1];
412    }
413 
414    _math_matrix_viewport(&intel->ViewportMatrix,
415                          scale, translate, 1.0);
416 }
417 
418 
419 /** Called from ctx->Driver.DepthRange() */
420 static void
i915DepthRange(struct gl_context * ctx)421 i915DepthRange(struct gl_context *ctx)
422 {
423    intelCalcViewport(ctx);
424 }
425 
426 
427 /* =============================================================
428  * Polygon stipple
429  *
430  * The i915 supports a 4x4 stipple natively, GL wants 32x32.
431  * Fortunately stipple is usually a repeating pattern.
432  */
433 static void
i915PolygonStipple(struct gl_context * ctx,const GLubyte * mask)434 i915PolygonStipple(struct gl_context * ctx, const GLubyte * mask)
435 {
436    struct i915_context *i915 = I915_CONTEXT(ctx);
437    const GLubyte *m;
438    GLubyte p[4];
439    int i, j, k;
440    int active = (ctx->Polygon.StippleFlag &&
441                  i915->intel.reduced_primitive == GL_TRIANGLES);
442    GLuint newMask;
443 
444    if (active) {
445       I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE);
446       i915->state.Stipple[I915_STPREG_ST1] &= ~ST1_ENABLE;
447    }
448 
449    /* Use the already unpacked stipple data from the context rather than the
450     * uninterpreted mask passed in.
451     */
452    mask = (const GLubyte *)ctx->PolygonStipple;
453    m = mask;
454 
455    p[0] = mask[12] & 0xf;
456    p[0] |= p[0] << 4;
457    p[1] = mask[8] & 0xf;
458    p[1] |= p[1] << 4;
459    p[2] = mask[4] & 0xf;
460    p[2] |= p[2] << 4;
461    p[3] = mask[0] & 0xf;
462    p[3] |= p[3] << 4;
463 
464    for (k = 0; k < 8; k++)
465       for (j = 3; j >= 0; j--)
466          for (i = 0; i < 4; i++, m++)
467             if (*m != p[j]) {
468                i915->intel.hw_stipple = 0;
469                return;
470             }
471 
472    newMask = (((p[0] & 0xf) << 0) |
473               ((p[1] & 0xf) << 4) |
474               ((p[2] & 0xf) << 8) | ((p[3] & 0xf) << 12));
475 
476 
477    if (newMask == 0xffff || newMask == 0x0) {
478       /* this is needed to make conform pass */
479       i915->intel.hw_stipple = 0;
480       return;
481    }
482 
483    i915->state.Stipple[I915_STPREG_ST1] &= ~0xffff;
484    i915->state.Stipple[I915_STPREG_ST1] |= newMask;
485    i915->intel.hw_stipple = 1;
486 
487    if (active)
488       i915->state.Stipple[I915_STPREG_ST1] |= ST1_ENABLE;
489 }
490 
491 
492 /* =============================================================
493  * Hardware clipping
494  */
495 static void
i915Scissor(struct gl_context * ctx)496 i915Scissor(struct gl_context * ctx)
497 {
498    struct i915_context *i915 = I915_CONTEXT(ctx);
499    int x1, y1, x2, y2;
500 
501    if (!ctx->DrawBuffer)
502       return;
503 
504    DBG("%s %d,%d %dx%d\n", __func__,
505        ctx->Scissor.ScissorArray[0].X,     ctx->Scissor.ScissorArray[0].Y,
506        ctx->Scissor.ScissorArray[0].Width, ctx->Scissor.ScissorArray[0].Height);
507 
508    if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
509       x1 = ctx->Scissor.ScissorArray[0].X;
510       y1 = ctx->DrawBuffer->Height - (ctx->Scissor.ScissorArray[0].Y
511                                       + ctx->Scissor.ScissorArray[0].Height);
512       x2 = ctx->Scissor.ScissorArray[0].X
513          + ctx->Scissor.ScissorArray[0].Width - 1;
514       y2 = y1 + ctx->Scissor.ScissorArray[0].Height - 1;
515       DBG("%s %d..%d,%d..%d (inverted)\n", __func__, x1, x2, y1, y2);
516    }
517    else {
518       /* FBO - not inverted
519        */
520       x1 = ctx->Scissor.ScissorArray[0].X;
521       y1 = ctx->Scissor.ScissorArray[0].Y;
522       x2 = ctx->Scissor.ScissorArray[0].X
523          + ctx->Scissor.ScissorArray[0].Width - 1;
524       y2 = ctx->Scissor.ScissorArray[0].Y
525          + ctx->Scissor.ScissorArray[0].Height - 1;
526       DBG("%s %d..%d,%d..%d (not inverted)\n", __func__, x1, x2, y1, y2);
527    }
528 
529    x1 = CLAMP(x1, 0, ctx->DrawBuffer->Width - 1);
530    y1 = CLAMP(y1, 0, ctx->DrawBuffer->Height - 1);
531    x2 = CLAMP(x2, 0, ctx->DrawBuffer->Width - 1);
532    y2 = CLAMP(y2, 0, ctx->DrawBuffer->Height - 1);
533 
534    DBG("%s %d..%d,%d..%d (clamped)\n", __func__, x1, x2, y1, y2);
535 
536    I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS);
537    i915->state.Buffer[I915_DESTREG_SR1] = (y1 << 16) | (x1 & 0xffff);
538    i915->state.Buffer[I915_DESTREG_SR2] = (y2 << 16) | (x2 & 0xffff);
539 }
540 
541 static void
i915LogicOp(struct gl_context * ctx,GLenum opcode)542 i915LogicOp(struct gl_context * ctx, GLenum opcode)
543 {
544    struct i915_context *i915 = I915_CONTEXT(ctx);
545    int tmp = intel_translate_logic_op(opcode);
546 
547    DBG("%s\n", __func__);
548 
549    I915_STATECHANGE(i915, I915_UPLOAD_CTX);
550    i915->state.Ctx[I915_CTXREG_STATE4] &= ~LOGICOP_MASK;
551    i915->state.Ctx[I915_CTXREG_STATE4] |= LOGIC_OP_FUNC(tmp);
552 }
553 
554 
555 
556 static void
i915CullFaceFrontFace(struct gl_context * ctx,GLenum unused)557 i915CullFaceFrontFace(struct gl_context * ctx, GLenum unused)
558 {
559    struct i915_context *i915 = I915_CONTEXT(ctx);
560    GLuint mode, dw;
561 
562    DBG("%s %d\n", __func__,
563        ctx->DrawBuffer ? ctx->DrawBuffer->Name : 0);
564 
565    if (!ctx->Polygon.CullFlag) {
566       mode = S4_CULLMODE_NONE;
567    }
568    else if (ctx->Polygon.CullFaceMode != GL_FRONT_AND_BACK) {
569       mode = S4_CULLMODE_CW;
570 
571       if (ctx->DrawBuffer && _mesa_is_user_fbo(ctx->DrawBuffer))
572          mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW);
573       if (ctx->Polygon.CullFaceMode == GL_FRONT)
574          mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW);
575       if (ctx->Polygon.FrontFace != GL_CCW)
576          mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW);
577    }
578    else {
579       mode = S4_CULLMODE_BOTH;
580    }
581 
582    dw = i915->state.Ctx[I915_CTXREG_LIS4];
583    dw &= ~S4_CULLMODE_MASK;
584    dw |= mode;
585    if (dw != i915->state.Ctx[I915_CTXREG_LIS4]) {
586       i915->state.Ctx[I915_CTXREG_LIS4] = dw;
587       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
588    }
589 }
590 
591 static void
i915LineWidth(struct gl_context * ctx,GLfloat widthf)592 i915LineWidth(struct gl_context * ctx, GLfloat widthf)
593 {
594    struct i915_context *i915 = I915_CONTEXT(ctx);
595    int lis4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_LINE_WIDTH_MASK;
596    int width;
597 
598    DBG("%s\n", __func__);
599 
600    width = (int) (widthf * 2);
601    width = CLAMP(width, 1, 0xf);
602    lis4 |= width << S4_LINE_WIDTH_SHIFT;
603 
604    if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
605       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
606       i915->state.Ctx[I915_CTXREG_LIS4] = lis4;
607    }
608 }
609 
610 static void
i915PointSize(struct gl_context * ctx,GLfloat size)611 i915PointSize(struct gl_context * ctx, GLfloat size)
612 {
613    struct i915_context *i915 = I915_CONTEXT(ctx);
614    int lis4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_POINT_WIDTH_MASK;
615    GLint point_size = (int) round(size);
616 
617    DBG("%s\n", __func__);
618 
619    point_size = CLAMP(point_size, 1, 255);
620    lis4 |= point_size << S4_POINT_WIDTH_SHIFT;
621 
622    if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
623       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
624       i915->state.Ctx[I915_CTXREG_LIS4] = lis4;
625    }
626 }
627 
628 
629 static void
i915PointParameterfv(struct gl_context * ctx,GLenum pname,const GLfloat * params)630 i915PointParameterfv(struct gl_context * ctx, GLenum pname, const GLfloat *params)
631 {
632    struct i915_context *i915 = I915_CONTEXT(ctx);
633 
634    switch (pname) {
635    case GL_POINT_SPRITE_COORD_ORIGIN:
636       /* This could be supported, but it would require modifying the fragment
637        * program to invert the y component of the texture coordinate by
638        * inserting a 'SUB tc.y, {1.0}.xxxx, tc' instruction.
639        */
640       FALLBACK(&i915->intel, I915_FALLBACK_POINT_SPRITE_COORD_ORIGIN,
641 	       (params[0] != GL_UPPER_LEFT));
642       break;
643    }
644 }
645 
646 void
i915_update_sprite_point_enable(struct gl_context * ctx)647 i915_update_sprite_point_enable(struct gl_context *ctx)
648 {
649    struct intel_context *intel = intel_context(ctx);
650    /* _NEW_PROGRAM */
651    struct i915_fragment_program *p =
652       (struct i915_fragment_program *) ctx->FragmentProgram._Current;
653    const GLbitfield64 inputsRead = p->FragProg.info.inputs_read;
654    struct i915_context *i915 = i915_context(ctx);
655    GLuint s4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_VFMT_MASK;
656    GLuint coord_replace_bits = 0x0;
657 
658    /* _NEW_POINT */
659    if (ctx->Point.PointSprite)
660       coord_replace_bits = ctx->Point.CoordReplace;
661 
662    GLuint tex_coord_unit_bits =
663       (GLuint)((inputsRead & VARYING_BITS_TEX_ANY) >> VARYING_SLOT_TEX0);
664 
665    /*
666     * Here we can't enable the SPRITE_POINT_ENABLE bit when the mis-match
667     * of tex_coord_unit_bits and coord_replace_bits, or this will make all
668     * the other non-point-sprite coords(like varying inputs, as we now use
669     * tex coord to implement varying inputs) be replaced to value (0, 0)-(1, 1).
670     *
671     * Thus, do fallback when needed.
672     */
673    FALLBACK(intel, I915_FALLBACK_COORD_REPLACE,
674             coord_replace_bits && coord_replace_bits != tex_coord_unit_bits);
675 
676    s4 &= ~S4_SPRITE_POINT_ENABLE;
677    s4 |= (coord_replace_bits && coord_replace_bits == tex_coord_unit_bits) ?
678          S4_SPRITE_POINT_ENABLE : 0;
679    if (s4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
680       i915->state.Ctx[I915_CTXREG_LIS4] = s4;
681       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
682    }
683 }
684 
685 
686 /* =============================================================
687  * Color masks
688  */
689 
690 static void
i915ColorMask(struct gl_context * ctx,GLboolean r,GLboolean g,GLboolean b,GLboolean a)691 i915ColorMask(struct gl_context * ctx,
692               GLboolean r, GLboolean g, GLboolean b, GLboolean a)
693 {
694    struct i915_context *i915 = I915_CONTEXT(ctx);
695    GLuint tmp = i915->state.Ctx[I915_CTXREG_LIS5] & ~S5_WRITEDISABLE_MASK;
696 
697    DBG("%s r(%d) g(%d) b(%d) a(%d)\n", __func__, r, g, b,
698        a);
699 
700    if (!r)
701       tmp |= S5_WRITEDISABLE_RED;
702    if (!g)
703       tmp |= S5_WRITEDISABLE_GREEN;
704    if (!b)
705       tmp |= S5_WRITEDISABLE_BLUE;
706    if (!a)
707       tmp |= S5_WRITEDISABLE_ALPHA;
708 
709    if (tmp != i915->state.Ctx[I915_CTXREG_LIS5]) {
710       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
711       i915->state.Ctx[I915_CTXREG_LIS5] = tmp;
712    }
713 }
714 
715 static void
update_specular(struct gl_context * ctx)716 update_specular(struct gl_context * ctx)
717 {
718    /* A hack to trigger the rebuild of the fragment program.
719     */
720    intel_context(ctx)->NewGLState |= _NEW_TEXTURE;
721 }
722 
723 static void
i915LightModelfv(struct gl_context * ctx,GLenum pname,const GLfloat * param)724 i915LightModelfv(struct gl_context * ctx, GLenum pname, const GLfloat * param)
725 {
726    DBG("%s\n", __func__);
727 
728    if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) {
729       update_specular(ctx);
730    }
731 }
732 
733 static void
i915ShadeModel(struct gl_context * ctx,GLenum mode)734 i915ShadeModel(struct gl_context * ctx, GLenum mode)
735 {
736    struct i915_context *i915 = I915_CONTEXT(ctx);
737    I915_STATECHANGE(i915, I915_UPLOAD_CTX);
738 
739    if (mode == GL_SMOOTH) {
740       i915->state.Ctx[I915_CTXREG_LIS4] &= ~(S4_FLATSHADE_ALPHA |
741                                              S4_FLATSHADE_COLOR |
742                                              S4_FLATSHADE_SPECULAR);
743    }
744    else {
745       i915->state.Ctx[I915_CTXREG_LIS4] |= (S4_FLATSHADE_ALPHA |
746                                             S4_FLATSHADE_COLOR |
747                                             S4_FLATSHADE_SPECULAR);
748    }
749 }
750 
751 /* =============================================================
752  * Fog
753  *
754  * This empty function remains because _mesa_init_driver_state calls
755  * dd_function_table::Fogfv unconditionally.  We have to have some function
756  * there so that it doesn't try to call a NULL pointer.
757  */
758 static void
i915Fogfv(struct gl_context * ctx,GLenum pname,const GLfloat * param)759 i915Fogfv(struct gl_context * ctx, GLenum pname, const GLfloat * param)
760 {
761    (void) ctx;
762    (void) pname;
763    (void) param;
764 }
765 
766 /* =============================================================
767  */
768 
769 static void
i915Enable(struct gl_context * ctx,GLenum cap,GLboolean state)770 i915Enable(struct gl_context * ctx, GLenum cap, GLboolean state)
771 {
772    struct i915_context *i915 = I915_CONTEXT(ctx);
773    GLuint dw;
774 
775    switch (cap) {
776    case GL_TEXTURE_2D:
777       break;
778 
779    case GL_LIGHTING:
780    case GL_COLOR_SUM:
781       update_specular(ctx);
782       break;
783 
784    case GL_ALPHA_TEST:
785       dw = i915->state.Ctx[I915_CTXREG_LIS6];
786       if (state)
787          dw |= S6_ALPHA_TEST_ENABLE;
788       else
789          dw &= ~S6_ALPHA_TEST_ENABLE;
790       if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
791 	 i915->state.Ctx[I915_CTXREG_LIS6] = dw;
792 	 I915_STATECHANGE(i915, I915_UPLOAD_CTX);
793       }
794       break;
795 
796    case GL_BLEND:
797       i915EvalLogicOpBlendState(ctx);
798       break;
799 
800    case GL_COLOR_LOGIC_OP:
801       i915EvalLogicOpBlendState(ctx);
802 
803       /* Logicop doesn't seem to work at 16bpp:
804        */
805       if (ctx->Visual.rgbBits == 16)
806          FALLBACK(&i915->intel, I915_FALLBACK_LOGICOP, state);
807       break;
808 
809    case GL_FRAGMENT_PROGRAM_ARB:
810       break;
811 
812    case GL_DITHER:
813       dw = i915->state.Ctx[I915_CTXREG_LIS5];
814       if (state)
815          dw |= S5_COLOR_DITHER_ENABLE;
816       else
817          dw &= ~S5_COLOR_DITHER_ENABLE;
818       if (dw != i915->state.Ctx[I915_CTXREG_LIS5]) {
819 	 i915->state.Ctx[I915_CTXREG_LIS5] = dw;
820 	 I915_STATECHANGE(i915, I915_UPLOAD_CTX);
821       }
822       break;
823 
824    case GL_DEPTH_TEST:
825       dw = i915->state.Ctx[I915_CTXREG_LIS6];
826 
827       if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.depthBits)
828 	 state = false;
829 
830       if (state)
831          dw |= S6_DEPTH_TEST_ENABLE;
832       else
833          dw &= ~S6_DEPTH_TEST_ENABLE;
834       if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
835 	 i915->state.Ctx[I915_CTXREG_LIS6] = dw;
836 	 I915_STATECHANGE(i915, I915_UPLOAD_CTX);
837       }
838 
839       i915DepthMask(ctx, ctx->Depth.Mask);
840       break;
841 
842    case GL_SCISSOR_TEST:
843       I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS);
844       if (state)
845          i915->state.Buffer[I915_DESTREG_SENABLE] =
846             (_3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT);
847       else
848          i915->state.Buffer[I915_DESTREG_SENABLE] =
849             (_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);
850       break;
851 
852    case GL_LINE_SMOOTH:
853       dw = i915->state.Ctx[I915_CTXREG_LIS4];
854       if (state)
855          dw |= S4_LINE_ANTIALIAS_ENABLE;
856       else
857          dw &= ~S4_LINE_ANTIALIAS_ENABLE;
858       if (dw != i915->state.Ctx[I915_CTXREG_LIS4]) {
859 	 i915->state.Ctx[I915_CTXREG_LIS4] = dw;
860 	 I915_STATECHANGE(i915, I915_UPLOAD_CTX);
861       }
862       break;
863 
864    case GL_CULL_FACE:
865       i915CullFaceFrontFace(ctx, 0);
866       break;
867 
868    case GL_STENCIL_TEST:
869       if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.stencilBits)
870 	 state = false;
871 
872       dw = i915->state.Ctx[I915_CTXREG_LIS5];
873       if (state)
874 	 dw |= (S5_STENCIL_TEST_ENABLE | S5_STENCIL_WRITE_ENABLE);
875       else
876 	 dw &= ~(S5_STENCIL_TEST_ENABLE | S5_STENCIL_WRITE_ENABLE);
877       if (dw != i915->state.Ctx[I915_CTXREG_LIS5]) {
878 	 i915->state.Ctx[I915_CTXREG_LIS5] = dw;
879 	 I915_STATECHANGE(i915, I915_UPLOAD_CTX);
880       }
881       break;
882 
883    case GL_POLYGON_STIPPLE:
884       /* The stipple command worked on my 855GM box, but not my 845G.
885        * I'll do more testing later to find out exactly which hardware
886        * supports it.  Disabled for now.
887        */
888       if (i915->intel.hw_stipple &&
889           i915->intel.reduced_primitive == GL_TRIANGLES) {
890          I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE);
891          if (state)
892             i915->state.Stipple[I915_STPREG_ST1] |= ST1_ENABLE;
893          else
894             i915->state.Stipple[I915_STPREG_ST1] &= ~ST1_ENABLE;
895       }
896       break;
897 
898    case GL_POLYGON_SMOOTH:
899       break;
900 
901    case GL_POINT_SPRITE:
902       /* Handle it at i915_update_sprite_point_enable () */
903       break;
904 
905    case GL_POINT_SMOOTH:
906       break;
907 
908    default:
909       ;
910    }
911 }
912 
913 
914 static void
i915_init_packets(struct i915_context * i915)915 i915_init_packets(struct i915_context *i915)
916 {
917    /* Zero all state */
918    memset(&i915->state, 0, sizeof(i915->state));
919 
920 
921    {
922       I915_STATECHANGE(i915, I915_UPLOAD_CTX);
923       I915_STATECHANGE(i915, I915_UPLOAD_BLEND);
924       /* Probably don't want to upload all this stuff every time one
925        * piece changes.
926        */
927       i915->state.Ctx[I915_CTXREG_LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
928                                          I1_LOAD_S(2) | I1_LOAD_S(3) |
929                                          I1_LOAD_S(4) | I1_LOAD_S(5) |
930                                          I1_LOAD_S(6) | (4));
931       i915->state.Ctx[I915_CTXREG_LIS2] = 0;
932       i915->state.Ctx[I915_CTXREG_LIS4] = 0;
933       i915->state.Ctx[I915_CTXREG_LIS3] = 0;
934       i915->state.Ctx[I915_CTXREG_LIS5] = 0;
935 
936       if (i915->intel.ctx.Visual.rgbBits == 16)
937          i915->state.Ctx[I915_CTXREG_LIS5] |= S5_COLOR_DITHER_ENABLE;
938 
939 
940       i915->state.Ctx[I915_CTXREG_LIS6] = (S6_COLOR_WRITE_ENABLE |
941                                            (2 << S6_TRISTRIP_PV_SHIFT));
942 
943       i915->state.Ctx[I915_CTXREG_STATE4] = (_3DSTATE_MODES_4_CMD |
944                                              ENABLE_LOGIC_OP_FUNC |
945                                              LOGIC_OP_FUNC(LOGICOP_COPY) |
946                                              ENABLE_STENCIL_TEST_MASK |
947                                              STENCIL_TEST_MASK(0xff) |
948                                              ENABLE_STENCIL_WRITE_MASK |
949                                              STENCIL_WRITE_MASK(0xff));
950 
951       i915->state.Blend[I915_BLENDREG_IAB] =
952          (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE |
953           IAB_MODIFY_FUNC | IAB_MODIFY_SRC_FACTOR | IAB_MODIFY_DST_FACTOR);
954 
955       i915->state.Blend[I915_BLENDREG_BLENDCOLOR0] =
956          _3DSTATE_CONST_BLEND_COLOR_CMD;
957       i915->state.Blend[I915_BLENDREG_BLENDCOLOR1] = 0;
958 
959       i915->state.Ctx[I915_CTXREG_BF_STENCIL_MASKS] =
960 	 _3DSTATE_BACKFACE_STENCIL_MASKS |
961 	 BFM_ENABLE_STENCIL_TEST_MASK |
962 	 BFM_ENABLE_STENCIL_WRITE_MASK |
963 	 (0xff << BFM_STENCIL_WRITE_MASK_SHIFT) |
964 	 (0xff << BFM_STENCIL_TEST_MASK_SHIFT);
965       i915->state.Ctx[I915_CTXREG_BF_STENCIL_OPS] =
966 	 _3DSTATE_BACKFACE_STENCIL_OPS |
967 	 BFO_ENABLE_STENCIL_REF |
968 	 BFO_ENABLE_STENCIL_FUNCS |
969 	 BFO_ENABLE_STENCIL_TWO_SIDE;
970    }
971 
972    {
973       I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE);
974       i915->state.Stipple[I915_STPREG_ST0] = _3DSTATE_STIPPLE;
975    }
976 
977    {
978       i915->state.Buffer[I915_DESTREG_DV0] = _3DSTATE_DST_BUF_VARS_CMD;
979 
980       /* scissor */
981       i915->state.Buffer[I915_DESTREG_SR0] = _3DSTATE_SCISSOR_RECT_0_CMD;
982       i915->state.Buffer[I915_DESTREG_SR1] = 0;
983       i915->state.Buffer[I915_DESTREG_SR2] = 0;
984       i915->state.Buffer[I915_DESTREG_SENABLE] =
985          (_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);
986    }
987 
988    i915->state.RasterRules[I915_RASTER_RULES] = _3DSTATE_RASTER_RULES_CMD |
989       ENABLE_POINT_RASTER_RULE |
990       OGL_POINT_RASTER_RULE |
991       ENABLE_LINE_STRIP_PROVOKE_VRTX |
992       ENABLE_TRI_FAN_PROVOKE_VRTX |
993       LINE_STRIP_PROVOKE_VRTX(1) |
994       TRI_FAN_PROVOKE_VRTX(2) | ENABLE_TEXKILL_3D_4D | TEXKILL_4D;
995 
996 #if 0
997    {
998       I915_STATECHANGE(i915, I915_UPLOAD_DEFAULTS);
999       i915->state.Default[I915_DEFREG_C0] = _3DSTATE_DEFAULT_DIFFUSE;
1000       i915->state.Default[I915_DEFREG_C1] = 0;
1001       i915->state.Default[I915_DEFREG_S0] = _3DSTATE_DEFAULT_SPECULAR;
1002       i915->state.Default[I915_DEFREG_S1] = 0;
1003       i915->state.Default[I915_DEFREG_Z0] = _3DSTATE_DEFAULT_Z;
1004       i915->state.Default[I915_DEFREG_Z1] = 0;
1005    }
1006 #endif
1007 
1008 
1009    /* These will be emitted every at the head of every buffer, unless
1010     * we get hardware contexts working.
1011     */
1012    i915->state.active = (I915_UPLOAD_PROGRAM |
1013                          I915_UPLOAD_STIPPLE |
1014                          I915_UPLOAD_CTX |
1015                          I915_UPLOAD_BLEND |
1016                          I915_UPLOAD_BUFFERS |
1017 			 I915_UPLOAD_INVARIENT |
1018 			 I915_UPLOAD_RASTER_RULES);
1019 }
1020 
1021 void
i915_update_provoking_vertex(struct gl_context * ctx)1022 i915_update_provoking_vertex(struct gl_context * ctx)
1023 {
1024    struct i915_context *i915 = I915_CONTEXT(ctx);
1025 
1026    I915_STATECHANGE(i915, I915_UPLOAD_CTX);
1027    i915->state.Ctx[I915_CTXREG_LIS6] &= ~(S6_TRISTRIP_PV_MASK);
1028 
1029    I915_STATECHANGE(i915, I915_UPLOAD_RASTER_RULES);
1030    i915->state.RasterRules[I915_RASTER_RULES] &= ~(LINE_STRIP_PROVOKE_VRTX_MASK |
1031 						   TRI_FAN_PROVOKE_VRTX_MASK);
1032 
1033    /* _NEW_LIGHT */
1034    if (ctx->Light.ProvokingVertex == GL_LAST_VERTEX_CONVENTION) {
1035       i915->state.RasterRules[I915_RASTER_RULES] |= (LINE_STRIP_PROVOKE_VRTX(1) |
1036 						     TRI_FAN_PROVOKE_VRTX(2));
1037       i915->state.Ctx[I915_CTXREG_LIS6] |= (2 << S6_TRISTRIP_PV_SHIFT);
1038    } else {
1039       i915->state.RasterRules[I915_RASTER_RULES] |= (LINE_STRIP_PROVOKE_VRTX(0) |
1040 						     TRI_FAN_PROVOKE_VRTX(1));
1041       i915->state.Ctx[I915_CTXREG_LIS6] |= (0 << S6_TRISTRIP_PV_SHIFT);
1042     }
1043 }
1044 
1045 /* Fallback to swrast for select and feedback.
1046  */
1047 static void
i915RenderMode(struct gl_context * ctx,GLenum mode)1048 i915RenderMode(struct gl_context *ctx, GLenum mode)
1049 {
1050    struct intel_context *intel = intel_context(ctx);
1051    FALLBACK(intel, INTEL_FALLBACK_RENDERMODE, (mode != GL_RENDER));
1052 }
1053 
1054 void
i915InitStateFunctions(struct dd_function_table * functions)1055 i915InitStateFunctions(struct dd_function_table *functions)
1056 {
1057    functions->AlphaFunc = i915AlphaFunc;
1058    functions->BlendColor = i915BlendColor;
1059    functions->BlendEquationSeparate = i915BlendEquationSeparate;
1060    functions->BlendFuncSeparate = i915BlendFuncSeparate;
1061    functions->ColorMask = i915ColorMask;
1062    functions->CullFace = i915CullFaceFrontFace;
1063    functions->DepthFunc = i915DepthFunc;
1064    functions->DepthMask = i915DepthMask;
1065    functions->Enable = i915Enable;
1066    functions->Fogfv = i915Fogfv;
1067    functions->FrontFace = i915CullFaceFrontFace;
1068    functions->LightModelfv = i915LightModelfv;
1069    functions->LineWidth = i915LineWidth;
1070    functions->LogicOpcode = i915LogicOp;
1071    functions->PointSize = i915PointSize;
1072    functions->PointParameterfv = i915PointParameterfv;
1073    functions->PolygonStipple = i915PolygonStipple;
1074    functions->RenderMode = i915RenderMode;
1075    functions->Scissor = i915Scissor;
1076    functions->ShadeModel = i915ShadeModel;
1077    functions->StencilFuncSeparate = i915StencilFuncSeparate;
1078    functions->StencilMaskSeparate = i915StencilMaskSeparate;
1079    functions->StencilOpSeparate = i915StencilOpSeparate;
1080    functions->DepthRange = i915DepthRange;
1081 }
1082 
1083 
1084 void
i915InitState(struct i915_context * i915)1085 i915InitState(struct i915_context *i915)
1086 {
1087    struct gl_context *ctx = &i915->intel.ctx;
1088 
1089    i915_init_packets(i915);
1090 
1091    _mesa_init_driver_state(ctx);
1092 }
1093