intel_tris.c revision 8d68a90e225d831a395ba788e425cb717eec1f9a 
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/** @file intel_tris.c
29 *
30 * This file contains functions for managing the vertex buffer and emitting
31 * primitives into it.
32 */
33
34#include "main/glheader.h"
35#include "main/context.h"
36#include "main/macros.h"
37#include "main/enums.h"
38#include "main/texobj.h"
39#include "main/state.h"
40#include "main/dd.h"
41
42#include "swrast/swrast.h"
43#include "swrast_setup/swrast_setup.h"
44#include "tnl/t_context.h"
45#include "tnl/t_pipeline.h"
46#include "tnl/t_vertex.h"
47
48#include "intel_screen.h"
49#include "intel_context.h"
50#include "intel_tris.h"
51#include "intel_batchbuffer.h"
52#include "intel_buffers.h"
53#include "intel_reg.h"
54#include "intel_span.h"
55#include "i830_context.h"
56#include "i830_reg.h"
57
58static void intelRenderPrimitive(struct gl_context * ctx, GLenum prim);
59static void intelRasterPrimitive(struct gl_context * ctx, GLenum rprim,
60                                 GLuint hwprim);
61
62static void
63intel_flush_inline_primitive(struct intel_context *intel)
64{
65   GLuint used = intel->batch.used - intel->prim.start_ptr;
66
67   assert(intel->prim.primitive != ~0);
68
69/*    printf("/\n"); */
70
71   if (used < 2)
72      goto do_discard;
73
74   intel->batch.map[intel->prim.start_ptr] =
75      _3DPRIMITIVE | intel->prim.primitive | (used - 2);
76
77   goto finished;
78
79 do_discard:
80   intel->batch.used = intel->prim.start_ptr;
81
82 finished:
83   intel->prim.primitive = ~0;
84   intel->prim.start_ptr = 0;
85   intel->prim.flush = 0;
86}
87
88static void intel_start_inline(struct intel_context *intel, uint32_t prim)
89{
90   BATCH_LOCALS;
91
92   intel->vtbl.emit_state(intel);
93
94   intel->no_batch_wrap = GL_TRUE;
95
96   /*printf("%s *", __progname);*/
97
98   /* Emit a slot which will be filled with the inline primitive
99    * command later.
100    */
101   BEGIN_BATCH(1);
102
103   intel->prim.start_ptr = intel->batch.used;
104   intel->prim.primitive = prim;
105   intel->prim.flush = intel_flush_inline_primitive;
106
107   OUT_BATCH(0);
108   ADVANCE_BATCH();
109
110   intel->no_batch_wrap = GL_FALSE;
111/*    printf(">"); */
112}
113
114static void intel_wrap_inline(struct intel_context *intel)
115{
116   GLuint prim = intel->prim.primitive;
117
118   intel_flush_inline_primitive(intel);
119   intel_batchbuffer_flush(intel);
120   intel_start_inline(intel, prim);  /* ??? */
121}
122
123static GLuint *intel_extend_inline(struct intel_context *intel, GLuint dwords)
124{
125   GLuint *ptr;
126
127   assert(intel->prim.flush == intel_flush_inline_primitive);
128
129   if (intel_batchbuffer_space(intel) < dwords * sizeof(GLuint))
130      intel_wrap_inline(intel);
131
132/*    printf("."); */
133
134   intel->vtbl.assert_not_dirty(intel);
135
136   ptr = intel->batch.map + intel->batch.used;
137   intel->batch.used += dwords;
138
139   return ptr;
140}
141
142/** Sets the primitive type for a primitive sequence, flushing as needed. */
143void intel_set_prim(struct intel_context *intel, uint32_t prim)
144{
145   /* if we have no VBOs */
146
147   if (intel->intelScreen->no_vbo) {
148      intel_start_inline(intel, prim);
149      return;
150   }
151   if (prim != intel->prim.primitive) {
152      INTEL_FIREVERTICES(intel);
153      intel->prim.primitive = prim;
154   }
155}
156
157/** Returns mapped VB space for the given number of vertices */
158uint32_t *intel_get_prim_space(struct intel_context *intel, unsigned int count)
159{
160   uint32_t *addr;
161
162   if (intel->intelScreen->no_vbo) {
163      return intel_extend_inline(intel, count * intel->vertex_size);
164   }
165
166   /* Check for space in the existing VB */
167   if (intel->prim.vb_bo == NULL ||
168       (intel->prim.current_offset +
169	count * intel->vertex_size * 4) > INTEL_VB_SIZE ||
170       (intel->prim.count + count) >= (1 << 16)) {
171      /* Flush existing prim if any */
172      INTEL_FIREVERTICES(intel);
173
174      intel_finish_vb(intel);
175
176      /* Start a new VB */
177      if (intel->prim.vb == NULL)
178	 intel->prim.vb = malloc(INTEL_VB_SIZE);
179      intel->prim.vb_bo = drm_intel_bo_alloc(intel->bufmgr, "vb",
180					     INTEL_VB_SIZE, 4);
181      intel->prim.start_offset = 0;
182      intel->prim.current_offset = 0;
183   }
184
185   intel->prim.flush = intel_flush_prim;
186
187   addr = (uint32_t *)(intel->prim.vb + intel->prim.current_offset);
188   intel->prim.current_offset += intel->vertex_size * 4 * count;
189   intel->prim.count += count;
190
191   return addr;
192}
193
194/** Dispatches the accumulated primitive to the batchbuffer. */
195void intel_flush_prim(struct intel_context *intel)
196{
197   drm_intel_bo *aper_array[2];
198   drm_intel_bo *vb_bo;
199   unsigned int offset, count;
200   BATCH_LOCALS;
201
202   /* Must be called after an intel_start_prim. */
203   assert(intel->prim.primitive != ~0);
204
205   if (intel->prim.count == 0)
206      return;
207
208   /* Clear the current prims out of the context state so that a batch flush
209    * flush triggered by emit_state doesn't loop back to flush_prim again.
210    */
211   vb_bo = intel->prim.vb_bo;
212   drm_intel_bo_reference(vb_bo);
213   count = intel->prim.count;
214   intel->prim.count = 0;
215   offset = intel->prim.start_offset;
216   intel->prim.start_offset = intel->prim.current_offset;
217   if (intel->gen < 3)
218      intel->prim.start_offset = ALIGN(intel->prim.start_offset, 128);
219   intel->prim.flush = NULL;
220
221   intel->vtbl.emit_state(intel);
222
223   aper_array[0] = intel->batch.bo;
224   aper_array[1] = vb_bo;
225   if (dri_bufmgr_check_aperture_space(aper_array, 2)) {
226      intel_batchbuffer_flush(intel);
227      intel->vtbl.emit_state(intel);
228   }
229
230   /* Ensure that we don't start a new batch for the following emit, which
231    * depends on the state just emitted. emit_state should be making sure we
232    * have the space for this.
233    */
234   intel->no_batch_wrap = GL_TRUE;
235
236#if 0
237   printf("emitting %d..%d=%d vertices size %d\n", offset,
238	  intel->prim.current_offset, count,
239	  intel->vertex_size * 4);
240#endif
241
242   if (intel->gen >= 3) {
243      BEGIN_BATCH(5);
244      OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
245		I1_LOAD_S(0) | I1_LOAD_S(1) | 1);
246      assert((offset & ~S0_VB_OFFSET_MASK) == 0);
247      OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0, offset);
248      OUT_BATCH((intel->vertex_size << S1_VERTEX_WIDTH_SHIFT) |
249		(intel->vertex_size << S1_VERTEX_PITCH_SHIFT));
250
251      OUT_BATCH(_3DPRIMITIVE |
252		PRIM_INDIRECT |
253		PRIM_INDIRECT_SEQUENTIAL |
254		intel->prim.primitive |
255		count);
256      OUT_BATCH(0); /* Beginning vertex index */
257      ADVANCE_BATCH();
258   } else {
259      struct i830_context *i830 = i830_context(&intel->ctx);
260
261      BEGIN_BATCH(5);
262      OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
263		I1_LOAD_S(0) | I1_LOAD_S(2) | 1);
264      /* S0 */
265      assert((offset & ~S0_VB_OFFSET_MASK_830) == 0);
266      OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0,
267		offset | (intel->vertex_size << S0_VB_PITCH_SHIFT_830) |
268		S0_VB_ENABLE_830);
269      /* S2
270       * This is somewhat unfortunate -- VB width is tied up with
271       * vertex format data that we've already uploaded through
272       * _3DSTATE_VFT[01]_CMD.  We may want to replace emits of VFT state with
273       * STATE_IMMEDIATE_1 like this to avoid duplication.
274       */
275      OUT_BATCH((i830->state.Ctx[I830_CTXREG_VF] & VFT0_TEX_COUNT_MASK) >>
276		VFT0_TEX_COUNT_SHIFT << S2_TEX_COUNT_SHIFT_830 |
277		(i830->state.Ctx[I830_CTXREG_VF2] << 16) |
278		intel->vertex_size << S2_VERTEX_0_WIDTH_SHIFT_830);
279
280      OUT_BATCH(_3DPRIMITIVE |
281		PRIM_INDIRECT |
282		PRIM_INDIRECT_SEQUENTIAL |
283		intel->prim.primitive |
284		count);
285      OUT_BATCH(0); /* Beginning vertex index */
286      ADVANCE_BATCH();
287   }
288
289   intel->no_batch_wrap = GL_FALSE;
290
291   drm_intel_bo_unreference(vb_bo);
292}
293
294/**
295 * Uploads the locally-accumulated VB into the buffer object.
296 *
297 * This avoids us thrashing the cachelines in and out as the buffer gets
298 * filled, dispatched, then reused as the hardware completes rendering from it,
299 * and also lets us clflush less if we dispatch with a partially-filled VB.
300 *
301 * This is called normally from get_space when we're finishing a BO, but also
302 * at batch flush time so that we don't try accessing the contents of a
303 * just-dispatched buffer.
304 */
305void intel_finish_vb(struct intel_context *intel)
306{
307   if (intel->prim.vb_bo == NULL)
308      return;
309
310   drm_intel_bo_subdata(intel->prim.vb_bo, 0, intel->prim.start_offset,
311			intel->prim.vb);
312   drm_intel_bo_unreference(intel->prim.vb_bo);
313   intel->prim.vb_bo = NULL;
314}
315
316/***********************************************************************
317 *                    Emit primitives as inline vertices               *
318 ***********************************************************************/
319
320#ifdef __i386__
321#define COPY_DWORDS( j, vb, vertsize, v )			\
322do {								\
323   int __tmp;							\
324   __asm__ __volatile__( "rep ; movsl"				\
325			 : "=%c" (j), "=D" (vb), "=S" (__tmp)	\
326			 : "0" (vertsize),			\
327			 "D" ((long)vb),			\
328			 "S" ((long)v) );			\
329} while (0)
330#else
331#define COPY_DWORDS( j, vb, vertsize, v )	\
332do {						\
333   for ( j = 0 ; j < vertsize ; j++ ) {		\
334      vb[j] = ((GLuint *)v)[j];			\
335   }						\
336   vb += vertsize;				\
337} while (0)
338#endif
339
340static void
341intel_draw_quad(struct intel_context *intel,
342                intelVertexPtr v0,
343                intelVertexPtr v1, intelVertexPtr v2, intelVertexPtr v3)
344{
345   GLuint vertsize = intel->vertex_size;
346   GLuint *vb = intel_get_prim_space(intel, 6);
347   int j;
348
349   COPY_DWORDS(j, vb, vertsize, v0);
350   COPY_DWORDS(j, vb, vertsize, v1);
351
352   /* If smooth shading, draw like a trifan which gives better
353    * rasterization.  Otherwise draw as two triangles with provoking
354    * vertex in third position as required for flat shading.
355    */
356   if (intel->ctx.Light.ShadeModel == GL_FLAT) {
357      COPY_DWORDS(j, vb, vertsize, v3);
358      COPY_DWORDS(j, vb, vertsize, v1);
359   }
360   else {
361      COPY_DWORDS(j, vb, vertsize, v2);
362      COPY_DWORDS(j, vb, vertsize, v0);
363   }
364
365   COPY_DWORDS(j, vb, vertsize, v2);
366   COPY_DWORDS(j, vb, vertsize, v3);
367}
368
369static void
370intel_draw_triangle(struct intel_context *intel,
371                    intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
372{
373   GLuint vertsize = intel->vertex_size;
374   GLuint *vb = intel_get_prim_space(intel, 3);
375   int j;
376
377   COPY_DWORDS(j, vb, vertsize, v0);
378   COPY_DWORDS(j, vb, vertsize, v1);
379   COPY_DWORDS(j, vb, vertsize, v2);
380}
381
382
383static void
384intel_draw_line(struct intel_context *intel,
385                intelVertexPtr v0, intelVertexPtr v1)
386{
387   GLuint vertsize = intel->vertex_size;
388   GLuint *vb = intel_get_prim_space(intel, 2);
389   int j;
390
391   COPY_DWORDS(j, vb, vertsize, v0);
392   COPY_DWORDS(j, vb, vertsize, v1);
393}
394
395
396static void
397intel_draw_point(struct intel_context *intel, intelVertexPtr v0)
398{
399   GLuint vertsize = intel->vertex_size;
400   GLuint *vb = intel_get_prim_space(intel, 1);
401   int j;
402
403   /* Adjust for sub pixel position -- still required for conform. */
404   *(float *) &vb[0] = v0->v.x;
405   *(float *) &vb[1] = v0->v.y;
406   for (j = 2; j < vertsize; j++)
407      vb[j] = v0->ui[j];
408}
409
410
411
412/***********************************************************************
413 *                Fixup for ARB_point_parameters                       *
414 ***********************************************************************/
415
416/* Currently not working - VERT_ATTRIB_POINTSIZE isn't correctly
417 * represented in the fragment program InputsRead field.
418 */
419static void
420intel_atten_point(struct intel_context *intel, intelVertexPtr v0)
421{
422   struct gl_context *ctx = &intel->ctx;
423   GLfloat psz[4], col[4], restore_psz, restore_alpha;
424
425   _tnl_get_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
426   _tnl_get_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
427
428   restore_psz = psz[0];
429   restore_alpha = col[3];
430
431   if (psz[0] >= ctx->Point.Threshold) {
432      psz[0] = MIN2(psz[0], ctx->Point.MaxSize);
433   }
434   else {
435      GLfloat dsize = psz[0] / ctx->Point.Threshold;
436      psz[0] = MAX2(ctx->Point.Threshold, ctx->Point.MinSize);
437      col[3] *= dsize * dsize;
438   }
439
440   if (psz[0] < 1.0)
441      psz[0] = 1.0;
442
443   if (restore_psz != psz[0] || restore_alpha != col[3]) {
444      _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
445      _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
446
447      intel_draw_point(intel, v0);
448
449      psz[0] = restore_psz;
450      col[3] = restore_alpha;
451
452      _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
453      _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
454   }
455   else
456      intel_draw_point(intel, v0);
457}
458
459
460
461
462
463/***********************************************************************
464 *                Fixup for I915 WPOS texture coordinate                *
465 ***********************************************************************/
466
467
468
469static void
470intel_wpos_triangle(struct intel_context *intel,
471                    intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
472{
473   GLuint offset = intel->wpos_offset;
474   GLuint size = intel->wpos_size;
475   GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
476   GLfloat *v1_wpos = (GLfloat *)((char *)v1 + offset);
477   GLfloat *v2_wpos = (GLfloat *)((char *)v2 + offset);
478
479   __memcpy(v0_wpos, v0, size);
480   __memcpy(v1_wpos, v1, size);
481   __memcpy(v2_wpos, v2, size);
482
483   v0_wpos[1] = -v0_wpos[1] + intel->ctx.DrawBuffer->Height;
484   v1_wpos[1] = -v1_wpos[1] + intel->ctx.DrawBuffer->Height;
485   v2_wpos[1] = -v2_wpos[1] + intel->ctx.DrawBuffer->Height;
486
487
488   intel_draw_triangle(intel, v0, v1, v2);
489}
490
491
492static void
493intel_wpos_line(struct intel_context *intel,
494                intelVertexPtr v0, intelVertexPtr v1)
495{
496   GLuint offset = intel->wpos_offset;
497   GLuint size = intel->wpos_size;
498   GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
499   GLfloat *v1_wpos = (GLfloat *)((char *)v1 + offset);
500
501   __memcpy(v0_wpos, v0, size);
502   __memcpy(v1_wpos, v1, size);
503
504   v0_wpos[1] = -v0_wpos[1] + intel->ctx.DrawBuffer->Height;
505   v1_wpos[1] = -v1_wpos[1] + intel->ctx.DrawBuffer->Height;
506
507   intel_draw_line(intel, v0, v1);
508}
509
510
511static void
512intel_wpos_point(struct intel_context *intel, intelVertexPtr v0)
513{
514   GLuint offset = intel->wpos_offset;
515   GLuint size = intel->wpos_size;
516   GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
517
518   __memcpy(v0_wpos, v0, size);
519   v0_wpos[1] = -v0_wpos[1] + intel->ctx.DrawBuffer->Height;
520
521   intel_draw_point(intel, v0);
522}
523
524
525
526
527
528
529/***********************************************************************
530 *          Macros for t_dd_tritmp.h to draw basic primitives          *
531 ***********************************************************************/
532
533#define TRI( a, b, c )				\
534do { 						\
535   if (DO_FALLBACK)				\
536      intel->draw_tri( intel, a, b, c );	\
537   else						\
538      intel_draw_triangle( intel, a, b, c );	\
539} while (0)
540
541#define QUAD( a, b, c, d )			\
542do { 						\
543   if (DO_FALLBACK) {				\
544      intel->draw_tri( intel, a, b, d );	\
545      intel->draw_tri( intel, b, c, d );	\
546   } else					\
547      intel_draw_quad( intel, a, b, c, d );	\
548} while (0)
549
550#define LINE( v0, v1 )				\
551do { 						\
552   if (DO_FALLBACK)				\
553      intel->draw_line( intel, v0, v1 );	\
554   else						\
555      intel_draw_line( intel, v0, v1 );		\
556} while (0)
557
558#define POINT( v0 )				\
559do { 						\
560   if (DO_FALLBACK)				\
561      intel->draw_point( intel, v0 );		\
562   else						\
563      intel_draw_point( intel, v0 );		\
564} while (0)
565
566
567/***********************************************************************
568 *              Build render functions from dd templates               *
569 ***********************************************************************/
570
571#define INTEL_OFFSET_BIT 	0x01
572#define INTEL_TWOSIDE_BIT	0x02
573#define INTEL_UNFILLED_BIT	0x04
574#define INTEL_FALLBACK_BIT	0x08
575#define INTEL_MAX_TRIFUNC	0x10
576
577
578static struct
579{
580   tnl_points_func points;
581   tnl_line_func line;
582   tnl_triangle_func triangle;
583   tnl_quad_func quad;
584} rast_tab[INTEL_MAX_TRIFUNC];
585
586
587#define DO_FALLBACK (IND & INTEL_FALLBACK_BIT)
588#define DO_OFFSET   (IND & INTEL_OFFSET_BIT)
589#define DO_UNFILLED (IND & INTEL_UNFILLED_BIT)
590#define DO_TWOSIDE  (IND & INTEL_TWOSIDE_BIT)
591#define DO_FLAT      0
592#define DO_TRI       1
593#define DO_QUAD      1
594#define DO_LINE      1
595#define DO_POINTS    1
596#define DO_FULL_QUAD 1
597
598#define HAVE_SPEC         1
599#define HAVE_BACK_COLORS  0
600#define HAVE_HW_FLATSHADE 1
601#define VERTEX            intelVertex
602#define TAB               rast_tab
603
604/* Only used to pull back colors into vertices (ie, we know color is
605 * floating point).
606 */
607#define INTEL_COLOR( dst, src )				\
608do {							\
609   UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);	\
610   UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);	\
611   UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);	\
612   UNCLAMPED_FLOAT_TO_UBYTE((dst)[3], (src)[3]);	\
613} while (0)
614
615#define INTEL_SPEC( dst, src )				\
616do {							\
617   UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);	\
618   UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);	\
619   UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);	\
620} while (0)
621
622
623#define DEPTH_SCALE intel->polygon_offset_scale
624#define UNFILLED_TRI unfilled_tri
625#define UNFILLED_QUAD unfilled_quad
626#define VERT_X(_v) _v->v.x
627#define VERT_Y(_v) _v->v.y
628#define VERT_Z(_v) _v->v.z
629#define AREA_IS_CCW( a ) (a > 0)
630#define GET_VERTEX(e) (intel->verts + (e * intel->vertex_size * sizeof(GLuint)))
631
632#define VERT_SET_RGBA( v, c )    if (coloroffset) INTEL_COLOR( v->ub4[coloroffset], c )
633#define VERT_COPY_RGBA( v0, v1 ) if (coloroffset) v0->ui[coloroffset] = v1->ui[coloroffset]
634#define VERT_SAVE_RGBA( idx )    if (coloroffset) color[idx] = v[idx]->ui[coloroffset]
635#define VERT_RESTORE_RGBA( idx ) if (coloroffset) v[idx]->ui[coloroffset] = color[idx]
636
637#define VERT_SET_SPEC( v, c )    if (specoffset) INTEL_SPEC( v->ub4[specoffset], c )
638#define VERT_COPY_SPEC( v0, v1 ) if (specoffset) COPY_3V(v0->ub4[specoffset], v1->ub4[specoffset])
639#define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
640#define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
641
642#define LOCAL_VARS(n)							\
643   struct intel_context *intel = intel_context(ctx);			\
644   GLuint color[n] = { 0, }, spec[n] = { 0, };				\
645   GLuint coloroffset = intel->coloroffset;				\
646   GLboolean specoffset = intel->specoffset;				\
647   (void) color; (void) spec; (void) coloroffset; (void) specoffset;
648
649
650/***********************************************************************
651 *                Helpers for rendering unfilled primitives            *
652 ***********************************************************************/
653
654static const GLuint hw_prim[GL_POLYGON + 1] = {
655   PRIM3D_POINTLIST,
656   PRIM3D_LINELIST,
657   PRIM3D_LINELIST,
658   PRIM3D_LINELIST,
659   PRIM3D_TRILIST,
660   PRIM3D_TRILIST,
661   PRIM3D_TRILIST,
662   PRIM3D_TRILIST,
663   PRIM3D_TRILIST,
664   PRIM3D_TRILIST
665};
666
667#define RASTERIZE(x) intelRasterPrimitive( ctx, x, hw_prim[x] )
668#define RENDER_PRIMITIVE intel->render_primitive
669#define TAG(x) x
670#define IND INTEL_FALLBACK_BIT
671#include "tnl_dd/t_dd_unfilled.h"
672#undef IND
673
674/***********************************************************************
675 *                      Generate GL render functions                   *
676 ***********************************************************************/
677
678#define IND (0)
679#define TAG(x) x
680#include "tnl_dd/t_dd_tritmp.h"
681
682#define IND (INTEL_OFFSET_BIT)
683#define TAG(x) x##_offset
684#include "tnl_dd/t_dd_tritmp.h"
685
686#define IND (INTEL_TWOSIDE_BIT)
687#define TAG(x) x##_twoside
688#include "tnl_dd/t_dd_tritmp.h"
689
690#define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT)
691#define TAG(x) x##_twoside_offset
692#include "tnl_dd/t_dd_tritmp.h"
693
694#define IND (INTEL_UNFILLED_BIT)
695#define TAG(x) x##_unfilled
696#include "tnl_dd/t_dd_tritmp.h"
697
698#define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
699#define TAG(x) x##_offset_unfilled
700#include "tnl_dd/t_dd_tritmp.h"
701
702#define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT)
703#define TAG(x) x##_twoside_unfilled
704#include "tnl_dd/t_dd_tritmp.h"
705
706#define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
707#define TAG(x) x##_twoside_offset_unfilled
708#include "tnl_dd/t_dd_tritmp.h"
709
710#define IND (INTEL_FALLBACK_BIT)
711#define TAG(x) x##_fallback
712#include "tnl_dd/t_dd_tritmp.h"
713
714#define IND (INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
715#define TAG(x) x##_offset_fallback
716#include "tnl_dd/t_dd_tritmp.h"
717
718#define IND (INTEL_TWOSIDE_BIT|INTEL_FALLBACK_BIT)
719#define TAG(x) x##_twoside_fallback
720#include "tnl_dd/t_dd_tritmp.h"
721
722#define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
723#define TAG(x) x##_twoside_offset_fallback
724#include "tnl_dd/t_dd_tritmp.h"
725
726#define IND (INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
727#define TAG(x) x##_unfilled_fallback
728#include "tnl_dd/t_dd_tritmp.h"
729
730#define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
731#define TAG(x) x##_offset_unfilled_fallback
732#include "tnl_dd/t_dd_tritmp.h"
733
734#define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
735#define TAG(x) x##_twoside_unfilled_fallback
736#include "tnl_dd/t_dd_tritmp.h"
737
738#define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT| \
739	     INTEL_FALLBACK_BIT)
740#define TAG(x) x##_twoside_offset_unfilled_fallback
741#include "tnl_dd/t_dd_tritmp.h"
742
743
744static void
745init_rast_tab(void)
746{
747   init();
748   init_offset();
749   init_twoside();
750   init_twoside_offset();
751   init_unfilled();
752   init_offset_unfilled();
753   init_twoside_unfilled();
754   init_twoside_offset_unfilled();
755   init_fallback();
756   init_offset_fallback();
757   init_twoside_fallback();
758   init_twoside_offset_fallback();
759   init_unfilled_fallback();
760   init_offset_unfilled_fallback();
761   init_twoside_unfilled_fallback();
762   init_twoside_offset_unfilled_fallback();
763}
764
765
766/***********************************************************************
767 *                    Rasterization fallback helpers                   *
768 ***********************************************************************/
769
770
771/* This code is hit only when a mix of accelerated and unaccelerated
772 * primitives are being drawn, and only for the unaccelerated
773 * primitives.
774 */
775static void
776intel_fallback_tri(struct intel_context *intel,
777                   intelVertex * v0, intelVertex * v1, intelVertex * v2)
778{
779   struct gl_context *ctx = &intel->ctx;
780   SWvertex v[3];
781
782   if (0)
783      fprintf(stderr, "\n%s\n", __FUNCTION__);
784
785   INTEL_FIREVERTICES(intel);
786
787   _swsetup_Translate(ctx, v0, &v[0]);
788   _swsetup_Translate(ctx, v1, &v[1]);
789   _swsetup_Translate(ctx, v2, &v[2]);
790   intelSpanRenderStart(ctx);
791   _swrast_Triangle(ctx, &v[0], &v[1], &v[2]);
792   intelSpanRenderFinish(ctx);
793}
794
795
796static void
797intel_fallback_line(struct intel_context *intel,
798                    intelVertex * v0, intelVertex * v1)
799{
800   struct gl_context *ctx = &intel->ctx;
801   SWvertex v[2];
802
803   if (0)
804      fprintf(stderr, "\n%s\n", __FUNCTION__);
805
806   INTEL_FIREVERTICES(intel);
807
808   _swsetup_Translate(ctx, v0, &v[0]);
809   _swsetup_Translate(ctx, v1, &v[1]);
810   intelSpanRenderStart(ctx);
811   _swrast_Line(ctx, &v[0], &v[1]);
812   intelSpanRenderFinish(ctx);
813}
814
815static void
816intel_fallback_point(struct intel_context *intel,
817		     intelVertex * v0)
818{
819   struct gl_context *ctx = &intel->ctx;
820   SWvertex v[1];
821
822   if (0)
823      fprintf(stderr, "\n%s\n", __FUNCTION__);
824
825   INTEL_FIREVERTICES(intel);
826
827   _swsetup_Translate(ctx, v0, &v[0]);
828   intelSpanRenderStart(ctx);
829   _swrast_Point(ctx, &v[0]);
830   intelSpanRenderFinish(ctx);
831}
832
833
834/**********************************************************************/
835/*               Render unclipped begin/end objects                   */
836/**********************************************************************/
837
838#define IND 0
839#define V(x) (intelVertex *)(vertptr + ((x)*vertsize*sizeof(GLuint)))
840#define RENDER_POINTS( start, count )	\
841   for ( ; start < count ; start++) POINT( V(ELT(start)) );
842#define RENDER_LINE( v0, v1 )         LINE( V(v0), V(v1) )
843#define RENDER_TRI(  v0, v1, v2 )     TRI(  V(v0), V(v1), V(v2) )
844#define RENDER_QUAD( v0, v1, v2, v3 ) QUAD( V(v0), V(v1), V(v2), V(v3) )
845#define INIT(x) intelRenderPrimitive( ctx, x )
846#undef LOCAL_VARS
847#define LOCAL_VARS						\
848    struct intel_context *intel = intel_context(ctx);			\
849    GLubyte *vertptr = (GLubyte *)intel->verts;			\
850    const GLuint vertsize = intel->vertex_size;       	\
851    const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;	\
852    (void) elt;
853#define RESET_STIPPLE
854#define RESET_OCCLUSION
855#define PRESERVE_VB_DEFS
856#define ELT(x) x
857#define TAG(x) intel_##x##_verts
858#include "tnl/t_vb_rendertmp.h"
859#undef ELT
860#undef TAG
861#define TAG(x) intel_##x##_elts
862#define ELT(x) elt[x]
863#include "tnl/t_vb_rendertmp.h"
864
865/**********************************************************************/
866/*                   Render clipped primitives                        */
867/**********************************************************************/
868
869
870
871static void
872intelRenderClippedPoly(struct gl_context * ctx, const GLuint * elts, GLuint n)
873{
874   struct intel_context *intel = intel_context(ctx);
875   TNLcontext *tnl = TNL_CONTEXT(ctx);
876   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
877   GLuint prim = intel->render_primitive;
878
879   /* Render the new vertices as an unclipped polygon.
880    */
881   {
882      GLuint *tmp = VB->Elts;
883      VB->Elts = (GLuint *) elts;
884      tnl->Driver.Render.PrimTabElts[GL_POLYGON] (ctx, 0, n,
885                                                  PRIM_BEGIN | PRIM_END);
886      VB->Elts = tmp;
887   }
888
889   /* Restore the render primitive
890    */
891   if (prim != GL_POLYGON)
892      tnl->Driver.Render.PrimitiveNotify(ctx, prim);
893}
894
895static void
896intelRenderClippedLine(struct gl_context * ctx, GLuint ii, GLuint jj)
897{
898   TNLcontext *tnl = TNL_CONTEXT(ctx);
899
900   tnl->Driver.Render.Line(ctx, ii, jj);
901}
902
903static void
904intelFastRenderClippedPoly(struct gl_context * ctx, const GLuint * elts, GLuint n)
905{
906   struct intel_context *intel = intel_context(ctx);
907   const GLuint vertsize = intel->vertex_size;
908   GLuint *vb = intel_get_prim_space(intel, (n - 2) * 3);
909   GLubyte *vertptr = (GLubyte *) intel->verts;
910   const GLuint *start = (const GLuint *) V(elts[0]);
911   int i, j;
912
913   for (i = 2; i < n; i++) {
914      COPY_DWORDS(j, vb, vertsize, V(elts[i - 1]));
915      COPY_DWORDS(j, vb, vertsize, V(elts[i]));
916      COPY_DWORDS(j, vb, vertsize, start);
917   }
918}
919
920/**********************************************************************/
921/*                    Choose render functions                         */
922/**********************************************************************/
923
924
925
926
927#define ANY_FALLBACK_FLAGS (DD_LINE_STIPPLE | DD_TRI_STIPPLE | DD_POINT_ATTEN | DD_POINT_SMOOTH | DD_TRI_SMOOTH)
928#define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE | DD_TRI_OFFSET | DD_TRI_UNFILLED)
929
930void
931intelChooseRenderState(struct gl_context * ctx)
932{
933   TNLcontext *tnl = TNL_CONTEXT(ctx);
934   struct intel_context *intel = intel_context(ctx);
935   GLuint flags = ctx->_TriangleCaps;
936   const struct gl_fragment_program *fprog = ctx->FragmentProgram._Current;
937   GLboolean have_wpos = (fprog && (fprog->Base.InputsRead & FRAG_BIT_WPOS));
938   GLuint index = 0;
939
940   if (INTEL_DEBUG & DEBUG_STATE)
941      fprintf(stderr, "\n%s\n", __FUNCTION__);
942
943   if ((flags & (ANY_FALLBACK_FLAGS | ANY_RASTER_FLAGS)) || have_wpos) {
944
945      if (flags & ANY_RASTER_FLAGS) {
946         if (flags & DD_TRI_LIGHT_TWOSIDE)
947            index |= INTEL_TWOSIDE_BIT;
948         if (flags & DD_TRI_OFFSET)
949            index |= INTEL_OFFSET_BIT;
950         if (flags & DD_TRI_UNFILLED)
951            index |= INTEL_UNFILLED_BIT;
952      }
953
954      if (have_wpos) {
955         intel->draw_point = intel_wpos_point;
956         intel->draw_line = intel_wpos_line;
957         intel->draw_tri = intel_wpos_triangle;
958
959         /* Make sure these get called:
960          */
961         index |= INTEL_FALLBACK_BIT;
962      }
963      else {
964         intel->draw_point = intel_draw_point;
965         intel->draw_line = intel_draw_line;
966         intel->draw_tri = intel_draw_triangle;
967      }
968
969      /* Hook in fallbacks for specific primitives.
970       */
971      if (flags & ANY_FALLBACK_FLAGS) {
972         if (flags & DD_LINE_STIPPLE)
973            intel->draw_line = intel_fallback_line;
974
975         if ((flags & DD_TRI_STIPPLE) && !intel->hw_stipple)
976            intel->draw_tri = intel_fallback_tri;
977
978         if (flags & DD_TRI_SMOOTH) {
979	    if (intel->conformance_mode > 0)
980	       intel->draw_tri = intel_fallback_tri;
981	 }
982
983         if (flags & DD_POINT_ATTEN) {
984	    if (0)
985	       intel->draw_point = intel_atten_point;
986	    else
987	       intel->draw_point = intel_fallback_point;
988	 }
989
990	 if (flags & DD_POINT_SMOOTH) {
991	    if (intel->conformance_mode > 0)
992	       intel->draw_point = intel_fallback_point;
993	 }
994
995         index |= INTEL_FALLBACK_BIT;
996      }
997   }
998
999   if (intel->RenderIndex != index) {
1000      intel->RenderIndex = index;
1001
1002      tnl->Driver.Render.Points = rast_tab[index].points;
1003      tnl->Driver.Render.Line = rast_tab[index].line;
1004      tnl->Driver.Render.Triangle = rast_tab[index].triangle;
1005      tnl->Driver.Render.Quad = rast_tab[index].quad;
1006
1007      if (index == 0) {
1008         tnl->Driver.Render.PrimTabVerts = intel_render_tab_verts;
1009         tnl->Driver.Render.PrimTabElts = intel_render_tab_elts;
1010         tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
1011         tnl->Driver.Render.ClippedPolygon = intelFastRenderClippedPoly;
1012      }
1013      else {
1014         tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
1015         tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
1016         tnl->Driver.Render.ClippedLine = intelRenderClippedLine;
1017         tnl->Driver.Render.ClippedPolygon = intelRenderClippedPoly;
1018      }
1019   }
1020}
1021
1022static const GLenum reduced_prim[GL_POLYGON + 1] = {
1023   GL_POINTS,
1024   GL_LINES,
1025   GL_LINES,
1026   GL_LINES,
1027   GL_TRIANGLES,
1028   GL_TRIANGLES,
1029   GL_TRIANGLES,
1030   GL_TRIANGLES,
1031   GL_TRIANGLES,
1032   GL_TRIANGLES
1033};
1034
1035
1036/**********************************************************************/
1037/*                 High level hooks for t_vb_render.c                 */
1038/**********************************************************************/
1039
1040
1041
1042
1043static void
1044intelRunPipeline(struct gl_context * ctx)
1045{
1046   struct intel_context *intel = intel_context(ctx);
1047
1048   _mesa_lock_context_textures(ctx);
1049
1050   if (ctx->NewState)
1051      _mesa_update_state_locked(ctx);
1052
1053   if (intel->NewGLState) {
1054      if (intel->NewGLState & _NEW_TEXTURE) {
1055         intel->vtbl.update_texture_state(intel);
1056      }
1057
1058      if (!intel->Fallback) {
1059         if (intel->NewGLState & _INTEL_NEW_RENDERSTATE)
1060            intelChooseRenderState(ctx);
1061      }
1062
1063      intel->NewGLState = 0;
1064   }
1065
1066   intel_map_vertex_shader_textures(ctx);
1067   _tnl_run_pipeline(ctx);
1068   intel_unmap_vertex_shader_textures(ctx);
1069
1070   _mesa_unlock_context_textures(ctx);
1071}
1072
1073static void
1074intelRenderStart(struct gl_context * ctx)
1075{
1076   struct intel_context *intel = intel_context(ctx);
1077
1078   intel_check_front_buffer_rendering(intel);
1079   intel->vtbl.render_start(intel_context(ctx));
1080   intel->vtbl.emit_state(intel);
1081}
1082
1083static void
1084intelRenderFinish(struct gl_context * ctx)
1085{
1086   struct intel_context *intel = intel_context(ctx);
1087
1088   if (intel->RenderIndex & INTEL_FALLBACK_BIT)
1089      _swrast_flush(ctx);
1090
1091   INTEL_FIREVERTICES(intel);
1092}
1093
1094
1095
1096
1097 /* System to flush dma and emit state changes based on the rasterized
1098  * primitive.
1099  */
1100static void
1101intelRasterPrimitive(struct gl_context * ctx, GLenum rprim, GLuint hwprim)
1102{
1103   struct intel_context *intel = intel_context(ctx);
1104
1105   if (0)
1106      fprintf(stderr, "%s %s %x\n", __FUNCTION__,
1107              _mesa_lookup_enum_by_nr(rprim), hwprim);
1108
1109   intel->vtbl.reduced_primitive_state(intel, rprim);
1110
1111   /* Start a new primitive.  Arrange to have it flushed later on.
1112    */
1113   if (hwprim != intel->prim.primitive) {
1114      INTEL_FIREVERTICES(intel);
1115
1116      intel_set_prim(intel, hwprim);
1117   }
1118}
1119
1120
1121 /*
1122  */
1123static void
1124intelRenderPrimitive(struct gl_context * ctx, GLenum prim)
1125{
1126   struct intel_context *intel = intel_context(ctx);
1127
1128   if (0)
1129      fprintf(stderr, "%s %s\n", __FUNCTION__, _mesa_lookup_enum_by_nr(prim));
1130
1131   /* Let some clipping routines know which primitive they're dealing
1132    * with.
1133    */
1134   intel->render_primitive = prim;
1135
1136   /* Shortcircuit this when called from t_dd_rendertmp.h for unfilled
1137    * triangles.  The rasterized primitive will always be reset by
1138    * lower level functions in that case, potentially pingponging the
1139    * state:
1140    */
1141   if (reduced_prim[prim] == GL_TRIANGLES &&
1142       (ctx->_TriangleCaps & DD_TRI_UNFILLED))
1143      return;
1144
1145   /* Set some primitive-dependent state and Start? a new primitive.
1146    */
1147   intelRasterPrimitive(ctx, reduced_prim[prim], hw_prim[prim]);
1148}
1149
1150
1151 /**********************************************************************/
1152 /*           Transition to/from hardware rasterization.               */
1153 /**********************************************************************/
1154
1155static char *fallbackStrings[] = {
1156   [0] = "Draw buffer",
1157   [1] = "Read buffer",
1158   [2] = "Depth buffer",
1159   [3] = "Stencil buffer",
1160   [4] = "User disable",
1161   [5] = "Render mode",
1162
1163   [12] = "Texture",
1164   [13] = "Color mask",
1165   [14] = "Stencil",
1166   [15] = "Stipple",
1167   [16] = "Program",
1168   [17] = "Logic op",
1169   [18] = "Smooth polygon",
1170   [19] = "Smooth point",
1171   [20] = "point sprite coord origin",
1172   [21] = "depth/color drawing offset",
1173};
1174
1175
1176static char *
1177getFallbackString(GLuint bit)
1178{
1179   int i = 0;
1180   while (bit > 1) {
1181      i++;
1182      bit >>= 1;
1183   }
1184   return fallbackStrings[i];
1185}
1186
1187
1188
1189/**
1190 * Enable/disable a fallback flag.
1191 * \param bit  one of INTEL_FALLBACK_x flags.
1192 */
1193void
1194intelFallback(struct intel_context *intel, GLbitfield bit, GLboolean mode)
1195{
1196   struct gl_context *ctx = &intel->ctx;
1197   TNLcontext *tnl = TNL_CONTEXT(ctx);
1198   const GLbitfield oldfallback = intel->Fallback;
1199
1200   if (mode) {
1201      intel->Fallback |= bit;
1202      if (oldfallback == 0) {
1203         intel_flush(ctx);
1204         if (INTEL_DEBUG & DEBUG_FALLBACKS)
1205            fprintf(stderr, "ENTER FALLBACK %x: %s\n",
1206                    bit, getFallbackString(bit));
1207         _swsetup_Wakeup(ctx);
1208         intel->RenderIndex = ~0;
1209      }
1210   }
1211   else {
1212      intel->Fallback &= ~bit;
1213      if (oldfallback == bit) {
1214         _swrast_flush(ctx);
1215         if (INTEL_DEBUG & DEBUG_FALLBACKS)
1216            fprintf(stderr, "LEAVE FALLBACK %s\n", getFallbackString(bit));
1217         tnl->Driver.Render.Start = intelRenderStart;
1218         tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1219         tnl->Driver.Render.Finish = intelRenderFinish;
1220         tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1221         tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1222         tnl->Driver.Render.Interp = _tnl_interp;
1223
1224         _tnl_invalidate_vertex_state(ctx, ~0);
1225         _tnl_invalidate_vertices(ctx, ~0);
1226         _tnl_install_attrs(ctx,
1227                            intel->vertex_attrs,
1228                            intel->vertex_attr_count,
1229                            intel->ViewportMatrix.m, 0);
1230
1231         intel->NewGLState |= _INTEL_NEW_RENDERSTATE;
1232      }
1233   }
1234}
1235
1236union fi
1237{
1238   GLfloat f;
1239   GLint i;
1240};
1241
1242/**********************************************************************/
1243/*                            Initialization.                         */
1244/**********************************************************************/
1245
1246
1247void
1248intelInitTriFuncs(struct gl_context * ctx)
1249{
1250   TNLcontext *tnl = TNL_CONTEXT(ctx);
1251   static int firsttime = 1;
1252
1253   if (firsttime) {
1254      init_rast_tab();
1255      firsttime = 0;
1256   }
1257
1258   tnl->Driver.RunPipeline = intelRunPipeline;
1259   tnl->Driver.Render.Start = intelRenderStart;
1260   tnl->Driver.Render.Finish = intelRenderFinish;
1261   tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1262   tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
1263   tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1264   tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1265   tnl->Driver.Render.Interp = _tnl_interp;
1266}
1267