i915_context.h revision 23d4a0569dcb70bdfd748bf7e1f5102289bfad6b 
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#ifndef I915_CONTEXT_H
29#define I915_CONTEXT_H
30
31
32#include "pipe/p_context.h"
33#include "pipe/p_defines.h"
34#include "pipe/p_state.h"
35
36#include "draw/draw_vertex.h"
37
38#include "tgsi/tgsi_scan.h"
39
40#include "util/u_slab.h"
41#include "util/u_blitter.h"
42
43
44struct i915_winsys;
45struct i915_winsys_buffer;
46struct i915_winsys_batchbuffer;
47
48
49#define I915_TEX_UNITS 8
50
51#define I915_DYNAMIC_MODES4       0
52#define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
53#define I915_DYNAMIC_DEPTHSCALE_1 2
54#define I915_DYNAMIC_IAB          3
55#define I915_DYNAMIC_BC_0         4 /* just the header */
56#define I915_DYNAMIC_BC_1         5
57#define I915_DYNAMIC_BFO_0        6
58#define I915_DYNAMIC_BFO_1        7
59#define I915_DYNAMIC_STP_0        8
60#define I915_DYNAMIC_STP_1        9
61#define I915_DYNAMIC_SC_ENA_0     10
62#define I915_DYNAMIC_SC_RECT_0    11
63#define I915_DYNAMIC_SC_RECT_1    12
64#define I915_DYNAMIC_SC_RECT_2    13
65#define I915_MAX_DYNAMIC          14
66
67
68#define I915_IMMEDIATE_S0         0
69#define I915_IMMEDIATE_S1         1
70#define I915_IMMEDIATE_S2         2
71#define I915_IMMEDIATE_S3         3
72#define I915_IMMEDIATE_S4         4
73#define I915_IMMEDIATE_S5         5
74#define I915_IMMEDIATE_S6         6
75#define I915_IMMEDIATE_S7         7
76#define I915_MAX_IMMEDIATE        8
77
78/* These must mach the order of LI0_STATE_* bits, as they will be used
79 * to generate hardware packets:
80 */
81#define I915_CACHE_STATIC         0
82#define I915_CACHE_DYNAMIC        1 /* handled specially */
83#define I915_CACHE_SAMPLER        2
84#define I915_CACHE_MAP            3
85#define I915_CACHE_PROGRAM        4
86#define I915_CACHE_CONSTANTS      5
87#define I915_MAX_CACHE            6
88
89#define I915_MAX_CONSTANT  32
90
91
92/** See constant_flags[] below */
93#define I915_CONSTFLAG_USER 0x1f
94
95
96/**
97 * Subclass of pipe_shader_state
98 */
99struct i915_fragment_shader
100{
101   struct pipe_shader_state state;
102
103   struct tgsi_shader_info info;
104
105   struct draw_fragment_shader *draw_data;
106
107   uint *program;
108   uint program_len;
109
110   /**
111    * constants introduced during translation.
112    * These are placed at the end of the constant buffer and grow toward
113    * the beginning (eg: slot 31, 30 29, ...)
114    * User-provided constants start at 0.
115    * This allows both types of constants to co-exist (until there's too many)
116    * and doesn't require regenerating/changing the fragment program to
117    * shuffle constants around.
118    */
119   uint num_constants;
120   float constants[I915_MAX_CONSTANT][4];
121
122   /**
123    * Status of each constant
124    * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
125    * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
126    * Else, the bitmask indicates which components are occupied by immediates.
127    */
128   ubyte constant_flags[I915_MAX_CONSTANT];
129
130   /**
131    * The mapping between generics and hw texture coords.
132    * We need to share this between the vertex and fragment stages.
133    **/
134   int generic_mapping[I915_TEX_UNITS];
135};
136
137
138struct i915_cache_context;
139
140/* Use to calculate differences between state emitted to hardware and
141 * current driver-calculated state.
142 */
143struct i915_state
144{
145   unsigned immediate[I915_MAX_IMMEDIATE];
146   unsigned dynamic[I915_MAX_DYNAMIC];
147
148   /** number of constants passed in through a constant buffer */
149   uint num_user_constants[PIPE_SHADER_TYPES];
150
151   /* texture sampler state */
152   unsigned sampler[I915_TEX_UNITS][3];
153   unsigned sampler_enable_flags;
154   unsigned sampler_enable_nr;
155
156   /* texture image buffers */
157   unsigned texbuffer[I915_TEX_UNITS][2];
158
159   /** Describes the current hardware vertex layout */
160   struct vertex_info vertex_info;
161
162   /* static state (dst/depth buffer state) */
163   struct i915_winsys_buffer *cbuf_bo;
164   unsigned cbuf_flags;
165   struct i915_winsys_buffer *depth_bo;
166   unsigned depth_flags;
167   unsigned dst_buf_vars;
168   uint32_t draw_offset;
169   uint32_t draw_size;
170   uint32_t target_fixup_format;
171   uint32_t fixup_swizzle;
172
173   unsigned id;			/* track lost context events */
174};
175
176struct i915_blend_state {
177   unsigned iab;
178   unsigned modes4;
179   unsigned LIS5;
180   unsigned LIS6;
181};
182
183struct i915_depth_stencil_state {
184   unsigned stencil_modes4;
185   unsigned bfo[2];
186   unsigned stencil_LIS5;
187   unsigned depth_LIS6;
188};
189
190struct i915_rasterizer_state {
191   struct pipe_rasterizer_state templ;
192
193   unsigned light_twoside : 1;
194   unsigned st;
195   enum interp_mode color_interp;
196
197   unsigned LIS4;
198   unsigned LIS7;
199   unsigned sc[1];
200
201   union { float f; unsigned u; } ds[2];
202};
203
204struct i915_sampler_state {
205   struct pipe_sampler_state templ;
206   unsigned state[3];
207   unsigned minlod;
208   unsigned maxlod;
209};
210
211struct i915_velems_state {
212   unsigned count;
213   struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
214};
215
216
217struct i915_context {
218   struct pipe_context base;
219
220   struct i915_winsys *iws;
221
222   struct draw_context *draw;
223
224   /* The most recent drawing state as set by the driver:
225    */
226   const struct i915_blend_state           *blend;
227   const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
228   struct pipe_sampler_state *vertex_samplers[PIPE_MAX_VERTEX_SAMPLERS];
229   const struct i915_depth_stencil_state   *depth_stencil;
230   const struct i915_rasterizer_state      *rasterizer;
231
232   struct i915_fragment_shader *fs;
233
234   struct pipe_blend_color blend_color;
235   struct pipe_stencil_ref stencil_ref;
236   struct pipe_clip_state clip;
237   struct pipe_resource *constants[PIPE_SHADER_TYPES];
238   struct pipe_framebuffer_state framebuffer;
239   struct pipe_poly_stipple poly_stipple;
240   struct pipe_scissor_state scissor;
241   struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
242   struct pipe_sampler_view *vertex_sampler_views[PIPE_MAX_SAMPLERS];
243   struct pipe_viewport_state viewport;
244   struct pipe_index_buffer index_buffer;
245
246   unsigned dirty;
247
248   struct pipe_resource *mapped_vs_tex[PIPE_MAX_VERTEX_SAMPLERS];
249   struct i915_winsys_buffer* mapped_vs_tex_buffer[PIPE_MAX_VERTEX_SAMPLERS];
250
251   unsigned num_samplers;
252   unsigned num_fragment_sampler_views;
253   unsigned num_vertex_samplers;
254   unsigned num_vertex_sampler_views;
255
256   struct i915_winsys_batchbuffer *batch;
257
258   /** Vertex buffer */
259   struct i915_winsys_buffer *vbo;
260   size_t vbo_offset;
261   unsigned vbo_flushed;
262
263   struct i915_state current;
264   unsigned hardware_dirty;
265   unsigned immediate_dirty : I915_MAX_IMMEDIATE;
266   unsigned dynamic_dirty : I915_MAX_DYNAMIC;
267   unsigned static_dirty : 4;
268   unsigned flush_dirty : 2;
269
270   struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
271   int num_validation_buffers;
272
273   struct util_slab_mempool transfer_pool;
274   struct util_slab_mempool texture_transfer_pool;
275
276   /* state for tracking flushes */
277   int last_fired_vertices;
278   int fired_vertices;
279   int queued_vertices;
280
281   /** blitter/hw-clear */
282   struct blitter_context* blitter;
283
284   /** State tracking needed by u_blitter for save/restore. */
285   void *saved_fs;
286   void (*saved_bind_fs_state)(struct pipe_context *pipe, void *shader);
287   void *saved_vs;
288   struct pipe_clip_state saved_clip;
289   struct i915_velems_state *saved_velems;
290   unsigned saved_nr_vertex_buffers;
291   struct pipe_vertex_buffer saved_vertex_buffers[PIPE_MAX_ATTRIBS];
292   unsigned saved_nr_samplers;
293   void *saved_samplers[PIPE_MAX_SAMPLERS];
294   void (*saved_bind_sampler_states)(struct pipe_context *pipe,
295                                     unsigned num, void **sampler);
296   unsigned saved_nr_sampler_views;
297   struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
298   void (*saved_set_sampler_views)(struct pipe_context *pipe,
299                                   unsigned num, struct pipe_sampler_view **views);
300};
301
302/* A flag for each state_tracker state object:
303 */
304#define I915_NEW_VIEWPORT      0x1
305#define I915_NEW_RASTERIZER    0x2
306#define I915_NEW_FS            0x4
307#define I915_NEW_BLEND         0x8
308#define I915_NEW_CLIP          0x10
309#define I915_NEW_SCISSOR       0x20
310#define I915_NEW_STIPPLE       0x40
311#define I915_NEW_FRAMEBUFFER   0x80
312#define I915_NEW_ALPHA_TEST    0x100
313#define I915_NEW_DEPTH_STENCIL 0x200
314#define I915_NEW_SAMPLER       0x400
315#define I915_NEW_SAMPLER_VIEW  0x800
316#define I915_NEW_VS_CONSTANTS  0x1000
317#define I915_NEW_FS_CONSTANTS  0x2000
318#define I915_NEW_GS_CONSTANTS  0x4000
319#define I915_NEW_VBO           0x8000
320#define I915_NEW_VS            0x10000
321
322
323/* Driver's internally generated state flags:
324 */
325#define I915_NEW_VERTEX_FORMAT    0x10000
326
327
328/* Dirty flags for hardware emit
329 */
330#define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
331#define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
332#define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
333#define I915_HW_MAP               (1<<I915_CACHE_MAP)
334#define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
335#define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
336#define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
337#define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
338#define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
339
340/* hw flush handling */
341#define I915_FLUSH_CACHE		1
342#define I915_PIPELINE_FLUSH		2
343
344/* split up static state */
345#define I915_DST_BUF_COLOR              1
346#define I915_DST_BUF_DEPTH              2
347#define I915_DST_VARS                   4
348#define I915_DST_RECT                   8
349
350static INLINE
351void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
352{
353   i915->hardware_dirty |= I915_HW_FLUSH;
354   i915->flush_dirty |= flush;
355}
356
357
358/***********************************************************************
359 * i915_prim_emit.c:
360 */
361struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
362
363
364/***********************************************************************
365 * i915_prim_vbuf.c:
366 */
367struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
368
369
370/***********************************************************************
371 * i915_state.c:
372 */
373void i915_prepare_vertex_sampling(struct i915_context *i915);
374void i915_cleanup_vertex_sampling(struct i915_context *i915);
375
376
377
378/***********************************************************************
379 * i915_state_emit.c:
380 */
381void i915_emit_hardware_state(struct i915_context *i915 );
382
383
384
385/***********************************************************************
386 * i915_clear.c:
387 */
388void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers,
389                        const union pipe_color_union *color,
390                        double depth, unsigned stencil);
391void i915_clear_render(struct pipe_context *pipe, unsigned buffers,
392                       const union pipe_color_union *color,
393                       double depth, unsigned stencil);
394void i915_clear_emit(struct pipe_context *pipe, unsigned buffers,
395                     const union pipe_color_union *color,
396                     double depth, unsigned stencil,
397                     unsigned destx, unsigned desty, unsigned width, unsigned height);
398
399
400/***********************************************************************
401 *
402 */
403void i915_init_state_functions( struct i915_context *i915 );
404void i915_init_fixup_state_functions( struct i915_context *i915 );
405void i915_init_flush_functions( struct i915_context *i915 );
406void i915_init_string_functions( struct i915_context *i915 );
407
408
409/************************************************************************
410 * i915_context.c
411 */
412struct pipe_context *i915_create_context(struct pipe_screen *screen,
413					 void *priv);
414
415
416/***********************************************************************
417 * Inline conversion functions.  These are better-typed than the
418 * macros used previously:
419 */
420static INLINE struct i915_context *
421i915_context( struct pipe_context *pipe )
422{
423   return (struct i915_context *)pipe;
424}
425
426
427#endif
428