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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 #ifndef INTELCONTEXT_INC
29 #define INTELCONTEXT_INC
30 
31 
32 #include <stdbool.h>
33 #include <string.h>
34 #include "main/mtypes.h"
35 
36 #include <drm.h>
37 #include <intel_bufmgr.h>
38 #include <i915_drm.h>
39 
40 #include "intel_screen.h"
41 #include "intel_tex_obj.h"
42 
43 #include "tnl/t_vertex.h"
44 
45 #define TAG(x) intel##x
46 #include "tnl_dd/t_dd_vertex.h"
47 #undef TAG
48 
49 #define DV_PF_555  (1<<8)
50 #define DV_PF_565  (2<<8)
51 #define DV_PF_8888 (3<<8)
52 #define DV_PF_4444 (8<<8)
53 #define DV_PF_1555 (9<<8)
54 
55 struct intel_region;
56 struct intel_context;
57 
58 typedef void (*intel_tri_func) (struct intel_context *, intelVertex *,
59                                 intelVertex *, intelVertex *);
60 typedef void (*intel_line_func) (struct intel_context *, intelVertex *,
61                                  intelVertex *);
62 typedef void (*intel_point_func) (struct intel_context *, intelVertex *);
63 
64 /**
65  * Bits for intel->Fallback field
66  */
67 /*@{*/
68 #define INTEL_FALLBACK_DRAW_BUFFER	 0x1
69 #define INTEL_FALLBACK_READ_BUFFER	 0x2
70 #define INTEL_FALLBACK_DEPTH_BUFFER      0x4
71 #define INTEL_FALLBACK_STENCIL_BUFFER    0x8
72 #define INTEL_FALLBACK_USER		 0x10
73 #define INTEL_FALLBACK_RENDERMODE	 0x20
74 #define INTEL_FALLBACK_TEXTURE   	 0x40
75 #define INTEL_FALLBACK_DRIVER            0x1000  /**< first for drivers */
76 /*@}*/
77 
78 extern void intelFallback(struct intel_context *intel, GLbitfield bit,
79                           bool mode);
80 #define FALLBACK( intel, bit, mode ) intelFallback( intel, bit, mode )
81 
82 
83 #define INTEL_WRITE_PART  0x1
84 #define INTEL_WRITE_FULL  0x2
85 #define INTEL_READ        0x4
86 
87 #ifndef likely
88 #ifdef __GNUC__
89 #define likely(expr) (__builtin_expect(expr, 1))
90 #define unlikely(expr) (__builtin_expect(expr, 0))
91 #else
92 #define likely(expr) (expr)
93 #define unlikely(expr) (expr)
94 #endif
95 #endif
96 
97 struct intel_batchbuffer {
98    /** Current batchbuffer being queued up. */
99    drm_intel_bo *bo;
100    /** Last BO submitted to the hardware.  Used for glFinish(). */
101    drm_intel_bo *last_bo;
102 
103    uint16_t emit, total;
104    uint16_t used, reserved_space;
105    uint32_t *map;
106    uint32_t *cpu_map;
107 #define BATCH_SZ (8192*sizeof(uint32_t))
108 };
109 
110 /**
111  * intel_context is derived from Mesa's context class: struct gl_context.
112  */
113 struct intel_context
114 {
115    struct gl_context ctx;  /**< base class, must be first field */
116 
117    struct
118    {
119       void (*destroy) (struct intel_context * intel);
120       void (*emit_state) (struct intel_context * intel);
121       void (*finish_batch) (struct intel_context * intel);
122       void (*new_batch) (struct intel_context * intel);
123       void (*emit_invarient_state) (struct intel_context * intel);
124       void (*update_texture_state) (struct intel_context * intel);
125 
126       void (*render_start) (struct intel_context * intel);
127       void (*render_prevalidate) (struct intel_context * intel);
128       void (*set_draw_region) (struct intel_context * intel,
129                                struct intel_region * draw_regions[],
130                                struct intel_region * depth_region,
131 			       GLuint num_regions);
132       void (*update_draw_buffer)(struct intel_context *intel);
133 
134       void (*reduced_primitive_state) (struct intel_context * intel,
135                                        GLenum rprim);
136 
137       bool (*check_vertex_size) (struct intel_context * intel,
138 				      GLuint expected);
139       void (*invalidate_state) (struct intel_context *intel,
140 				GLuint new_state);
141 
142       void (*assert_not_dirty) (struct intel_context *intel);
143 
144       void (*debug_batch)(struct intel_context *intel);
145       void (*annotate_aub)(struct intel_context *intel);
146       bool (*render_target_supported)(struct intel_context *intel,
147 				      struct gl_renderbuffer *rb);
148    } vtbl;
149 
150    GLbitfield Fallback;  /**< mask of INTEL_FALLBACK_x bits */
151    GLuint NewGLState;
152 
153    dri_bufmgr *bufmgr;
154    unsigned int maxBatchSize;
155 
156    /**
157     * Generation number of the hardware: 2 is 8xx, 3 is 9xx pre-965, 4 is 965.
158     */
159    int gen;
160    bool is_945;
161    bool has_swizzling;
162 
163    struct intel_batchbuffer batch;
164 
165    drm_intel_bo *first_post_swapbuffers_batch;
166    bool need_throttle;
167    bool no_batch_wrap;
168    bool tnl_pipeline_running; /**< Set while i915's _tnl_run_pipeline. */
169 
170    /**
171     * Set if we're either a debug context or the INTEL_DEBUG=perf environment
172     * variable is set, this is the flag indicating to do expensive work that
173     * might lead to a perf_debug() call.
174     */
175    bool perf_debug;
176 
177    struct
178    {
179       GLuint id;
180       uint32_t start_ptr; /**< for i8xx */
181       uint32_t primitive;	/**< Current hardware primitive type */
182       void (*flush) (struct intel_context *);
183       drm_intel_bo *vb_bo;
184       uint8_t *vb;
185       unsigned int start_offset; /**< Byte offset of primitive sequence */
186       unsigned int current_offset; /**< Byte offset of next vertex */
187       unsigned int count;	/**< Number of vertices in current primitive */
188    } prim;
189 
190    struct {
191       drm_intel_bo *bo;
192       GLuint offset;
193       uint32_t buffer_len;
194       uint32_t buffer_offset;
195       char buffer[4096];
196    } upload;
197 
198    uint32_t max_gtt_map_object_size;
199 
200    /* Offsets of fields within the current vertex:
201     */
202    GLuint coloroffset;
203    GLuint specoffset;
204    GLuint wpos_offset;
205 
206    struct tnl_attr_map vertex_attrs[VERT_ATTRIB_MAX];
207    GLuint vertex_attr_count;
208 
209    GLfloat polygon_offset_scale;        /* dependent on depth_scale, bpp */
210 
211    bool hw_stipple;
212    bool no_rast;
213    bool always_flush_batch;
214    bool always_flush_cache;
215    bool disable_throttling;
216 
217    /* State for intelvb.c and inteltris.c.
218     */
219    GLuint RenderIndex;
220    GLmatrix ViewportMatrix;
221    GLenum render_primitive;
222    GLenum reduced_primitive; /*< Only gen < 6 */
223    GLuint vertex_size;
224    GLubyte *verts;              /* points to tnl->clipspace.vertex_buf */
225 
226    /* Fallback rasterization functions
227     */
228    intel_point_func draw_point;
229    intel_line_func draw_line;
230    intel_tri_func draw_tri;
231 
232    /**
233     * Set if rendering has occurred to the drawable's front buffer.
234     *
235     * This is used in the DRI2 case to detect that glFlush should also copy
236     * the contents of the fake front buffer to the real front buffer.
237     */
238    bool front_buffer_dirty;
239 
240    bool use_early_z;
241 
242    __DRIcontext *driContext;
243    struct intel_screen *intelScreen;
244 
245    /**
246     * Configuration cache
247     */
248    driOptionCache optionCache;
249 };
250 
251 extern char *__progname;
252 
253 
254 #define SUBPIXEL_X 0.125
255 #define SUBPIXEL_Y 0.125
256 
257 #define INTEL_FIREVERTICES(intel)		\
258 do {						\
259    if ((intel)->prim.flush)			\
260       (intel)->prim.flush(intel);		\
261 } while (0)
262 
263 /* ================================================================
264  * Debugging:
265  */
266 extern int INTEL_DEBUG;
267 
268 #define DEBUG_TEXTURE	0x1
269 #define DEBUG_STATE	0x2
270 #define DEBUG_BLIT	0x8
271 #define DEBUG_MIPTREE   0x10
272 #define DEBUG_PERF	0x20
273 #define DEBUG_BATCH     0x80
274 #define DEBUG_PIXEL     0x100
275 #define DEBUG_BUFMGR    0x200
276 #define DEBUG_REGION    0x400
277 #define DEBUG_FBO       0x800
278 #define DEBUG_SYNC	0x2000
279 #define DEBUG_DRI       0x10000
280 #define DEBUG_STATS     0x100000
281 #define DEBUG_WM        0x400000
282 #define DEBUG_AUB       0x4000000
283 
284 #ifdef HAVE_ANDROID_PLATFORM
285 #define LOG_TAG "INTEL-MESA"
286 #include <cutils/log.h>
287 #ifndef ALOGW
288 #define ALOGW LOGW
289 #endif
290 #define dbg_printf(...)	ALOGW(__VA_ARGS__)
291 #else
292 #define dbg_printf(...)	printf(__VA_ARGS__)
293 #endif /* HAVE_ANDROID_PLATFORM */
294 
295 #define DBG(...) do {						\
296 	if (unlikely(INTEL_DEBUG & FILE_DEBUG_FLAG))		\
297 		dbg_printf(__VA_ARGS__);			\
298 } while(0)
299 
300 #define perf_debug(...) do {					\
301    static GLuint msg_id = 0;                                    \
302    if (unlikely(INTEL_DEBUG & DEBUG_PERF))                      \
303       dbg_printf(__VA_ARGS__);                                  \
304    if (intel->perf_debug)                                       \
305       _mesa_gl_debug(&intel->ctx, &msg_id,                      \
306                      MESA_DEBUG_SOURCE_API,                     \
307                      MESA_DEBUG_TYPE_PERFORMANCE,               \
308                      MESA_DEBUG_SEVERITY_MEDIUM,                \
309                      __VA_ARGS__);                              \
310 } while(0)
311 
312 #define WARN_ONCE(cond, fmt...) do {                            \
313    if (unlikely(cond)) {                                        \
314       static bool _warned = false;                              \
315       static GLuint msg_id = 0;                                 \
316       if (!_warned) {                                           \
317          fprintf(stderr, "WARNING: ");                          \
318          fprintf(stderr, fmt);                                  \
319          _warned = true;                                        \
320                                                                 \
321          _mesa_gl_debug(ctx, &msg_id,                           \
322                         MESA_DEBUG_SOURCE_API,                  \
323                         MESA_DEBUG_TYPE_OTHER,                  \
324                         MESA_DEBUG_SEVERITY_HIGH, fmt);         \
325       }                                                         \
326    }                                                            \
327 } while (0)
328 
329 /* ================================================================
330  * intel_context.c:
331  */
332 
333 extern const char *const i915_vendor_string;
334 
335 extern const char *i915_get_renderer_string(unsigned deviceID);
336 
337 extern bool intelInitContext(struct intel_context *intel,
338                              int api,
339                              unsigned major_version,
340                              unsigned minor_version,
341                              uint32_t flags,
342                              const struct gl_config * mesaVis,
343                              __DRIcontext * driContextPriv,
344                              void *sharedContextPrivate,
345                              struct dd_function_table *functions,
346                              unsigned *dri_ctx_error);
347 
348 extern void intelFinish(struct gl_context * ctx);
349 extern void intel_flush_rendering_to_batch(struct gl_context *ctx);
350 extern void _intel_flush(struct gl_context * ctx, const char *file, int line);
351 
352 #define intel_flush(ctx) _intel_flush(ctx, __FILE__, __LINE__)
353 
354 extern void intelInitDriverFunctions(struct dd_function_table *functions);
355 
356 void intel_init_syncobj_functions(struct dd_function_table *functions);
357 
358 
359 /* ================================================================
360  * intel_state.c:
361  */
362 
363 #define COMPAREFUNC_ALWAYS		0
364 #define COMPAREFUNC_NEVER		0x1
365 #define COMPAREFUNC_LESS		0x2
366 #define COMPAREFUNC_EQUAL		0x3
367 #define COMPAREFUNC_LEQUAL		0x4
368 #define COMPAREFUNC_GREATER		0x5
369 #define COMPAREFUNC_NOTEQUAL		0x6
370 #define COMPAREFUNC_GEQUAL		0x7
371 
372 #define STENCILOP_KEEP			0
373 #define STENCILOP_ZERO			0x1
374 #define STENCILOP_REPLACE		0x2
375 #define STENCILOP_INCRSAT		0x3
376 #define STENCILOP_DECRSAT		0x4
377 #define STENCILOP_INCR			0x5
378 #define STENCILOP_DECR			0x6
379 #define STENCILOP_INVERT		0x7
380 
381 #define LOGICOP_CLEAR			0
382 #define LOGICOP_NOR			0x1
383 #define LOGICOP_AND_INV 		0x2
384 #define LOGICOP_COPY_INV		0x3
385 #define LOGICOP_AND_RVRSE		0x4
386 #define LOGICOP_INV			0x5
387 #define LOGICOP_XOR			0x6
388 #define LOGICOP_NAND			0x7
389 #define LOGICOP_AND			0x8
390 #define LOGICOP_EQUIV			0x9
391 #define LOGICOP_NOOP			0xa
392 #define LOGICOP_OR_INV			0xb
393 #define LOGICOP_COPY			0xc
394 #define LOGICOP_OR_RVRSE		0xd
395 #define LOGICOP_OR			0xe
396 #define LOGICOP_SET			0xf
397 
398 #define BLENDFACT_ZERO			0x01
399 #define BLENDFACT_ONE			0x02
400 #define BLENDFACT_SRC_COLR		0x03
401 #define BLENDFACT_INV_SRC_COLR 		0x04
402 #define BLENDFACT_SRC_ALPHA		0x05
403 #define BLENDFACT_INV_SRC_ALPHA 	0x06
404 #define BLENDFACT_DST_ALPHA		0x07
405 #define BLENDFACT_INV_DST_ALPHA 	0x08
406 #define BLENDFACT_DST_COLR		0x09
407 #define BLENDFACT_INV_DST_COLR		0x0a
408 #define BLENDFACT_SRC_ALPHA_SATURATE	0x0b
409 #define BLENDFACT_CONST_COLOR		0x0c
410 #define BLENDFACT_INV_CONST_COLOR	0x0d
411 #define BLENDFACT_CONST_ALPHA		0x0e
412 #define BLENDFACT_INV_CONST_ALPHA	0x0f
413 #define BLENDFACT_MASK          	0x0f
414 
415 enum {
416    DRI_CONF_BO_REUSE_DISABLED,
417    DRI_CONF_BO_REUSE_ALL
418 };
419 
420 extern int intel_translate_shadow_compare_func(GLenum func);
421 extern int intel_translate_compare_func(GLenum func);
422 extern int intel_translate_stencil_op(GLenum op);
423 extern int intel_translate_blend_factor(GLenum factor);
424 extern int intel_translate_logic_op(GLenum opcode);
425 
426 void intel_update_renderbuffers(__DRIcontext *context,
427 				__DRIdrawable *drawable);
428 void intel_prepare_render(struct intel_context *intel);
429 
430 void i915_set_buf_info_for_region(uint32_t *state, struct intel_region *region,
431 				  uint32_t buffer_id);
432 void intel_init_texture_formats(struct gl_context *ctx);
433 
434 /*======================================================================
435  * Inline conversion functions.
436  * These are better-typed than the macros used previously:
437  */
438 static inline struct intel_context *
intel_context(struct gl_context * ctx)439 intel_context(struct gl_context * ctx)
440 {
441    return (struct intel_context *) ctx;
442 }
443 
444 #endif
445