i915_context.h revision abb436526974bd090853c0927ece0839f9143393 
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   uint *program;
106   uint program_len;
107
108   /**
109    * constants introduced during translation.
110    * These are placed at the end of the constant buffer and grow toward
111    * the beginning (eg: slot 31, 30 29, ...)
112    * User-provided constants start at 0.
113    * This allows both types of constants to co-exist (until there's too many)
114    * and doesn't require regenerating/changing the fragment program to
115    * shuffle constants around.
116    */
117   uint num_constants;
118   float constants[I915_MAX_CONSTANT][4];
119
120   /**
121    * Status of each constant
122    * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
123    * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
124    * Else, the bitmask indicates which components are occupied by immediates.
125    */
126   ubyte constant_flags[I915_MAX_CONSTANT];
127
128   /**
129    * The mapping between generics and hw texture coords.
130    * We need to share this between the vertex and fragment stages.
131    **/
132   int generic_mapping[I915_TEX_UNITS];
133};
134
135
136struct i915_cache_context;
137
138/* Use to calculate differences between state emitted to hardware and
139 * current driver-calculated state.
140 */
141struct i915_state
142{
143   unsigned immediate[I915_MAX_IMMEDIATE];
144   unsigned dynamic[I915_MAX_DYNAMIC];
145
146   /** number of constants passed in through a constant buffer */
147   uint num_user_constants[PIPE_SHADER_TYPES];
148
149   /* texture sampler state */
150   unsigned sampler[I915_TEX_UNITS][3];
151   unsigned sampler_enable_flags;
152   unsigned sampler_enable_nr;
153
154   /* texture image buffers */
155   unsigned texbuffer[I915_TEX_UNITS][2];
156
157   /** Describes the current hardware vertex layout */
158   struct vertex_info vertex_info;
159
160   /* static state (dst/depth buffer state) */
161   struct i915_winsys_buffer *cbuf_bo;
162   unsigned cbuf_flags;
163   struct i915_winsys_buffer *depth_bo;
164   unsigned depth_flags;
165   unsigned dst_buf_vars;
166   uint32_t draw_offset;
167   uint32_t draw_size;
168
169   unsigned id;			/* track lost context events */
170};
171
172struct i915_blend_state {
173   unsigned iab;
174   unsigned modes4;
175   unsigned LIS5;
176   unsigned LIS6;
177};
178
179struct i915_depth_stencil_state {
180   unsigned stencil_modes4;
181   unsigned bfo[2];
182   unsigned stencil_LIS5;
183   unsigned depth_LIS6;
184};
185
186struct i915_rasterizer_state {
187   unsigned light_twoside : 1;
188   unsigned st;
189   enum interp_mode color_interp;
190
191   unsigned LIS4;
192   unsigned LIS7;
193   unsigned sc[1];
194
195   struct pipe_rasterizer_state templ;
196
197   union { float f; unsigned u; } ds[2];
198};
199
200struct i915_sampler_state {
201   unsigned state[3];
202   const struct pipe_sampler_state *templ;
203   unsigned minlod;
204   unsigned maxlod;
205};
206
207struct i915_velems_state {
208   unsigned count;
209   struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
210};
211
212
213struct i915_context {
214   struct pipe_context base;
215
216   struct i915_winsys *iws;
217
218   struct draw_context *draw;
219
220   /* The most recent drawing state as set by the driver:
221    */
222   const struct i915_blend_state           *blend;
223   const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
224   const struct i915_depth_stencil_state   *depth_stencil;
225   const struct i915_rasterizer_state      *rasterizer;
226
227   struct i915_fragment_shader *fs;
228
229   struct pipe_blend_color blend_color;
230   struct pipe_stencil_ref stencil_ref;
231   struct pipe_clip_state clip;
232   struct pipe_resource *constants[PIPE_SHADER_TYPES];
233   struct pipe_framebuffer_state framebuffer;
234   struct pipe_poly_stipple poly_stipple;
235   struct pipe_scissor_state scissor;
236   struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
237   struct pipe_viewport_state viewport;
238   struct pipe_index_buffer index_buffer;
239
240   unsigned dirty;
241
242   unsigned num_samplers;
243   unsigned num_fragment_sampler_views;
244
245   struct i915_winsys_batchbuffer *batch;
246
247   /** Vertex buffer */
248   struct i915_winsys_buffer *vbo;
249   size_t vbo_offset;
250   unsigned vbo_flushed;
251
252   struct i915_state current;
253   unsigned hardware_dirty;
254   unsigned immediate_dirty : I915_MAX_IMMEDIATE;
255   unsigned dynamic_dirty : I915_MAX_DYNAMIC;
256   unsigned static_dirty : 4;
257   unsigned flush_dirty : 2;
258
259   struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
260   int num_validation_buffers;
261
262   struct util_slab_mempool transfer_pool;
263
264   /** blitter/hw-clear */
265   struct blitter_context* blitter;
266
267   /** State tracking needed by u_blitter for save/restore. */
268   void *saved_fs;
269   void (*saved_bind_fs_state)(struct pipe_context *pipe, void *shader);
270   void *saved_vs;
271   struct pipe_clip_state saved_clip;
272   struct i915_velems_state *saved_velems;
273   unsigned saved_nr_vertex_buffers;
274   struct pipe_vertex_buffer saved_vertex_buffers[PIPE_MAX_ATTRIBS];
275   unsigned saved_nr_samplers;
276   void *saved_samplers[PIPE_MAX_SAMPLERS];
277   void (*saved_bind_sampler_states)(struct pipe_context *pipe,
278                                     unsigned num, void **sampler);
279   unsigned saved_nr_sampler_views;
280   struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
281   void (*saved_set_sampler_views)(struct pipe_context *pipe,
282                                   unsigned num, struct pipe_sampler_view **views);
283};
284
285/* A flag for each state_tracker state object:
286 */
287#define I915_NEW_VIEWPORT      0x1
288#define I915_NEW_RASTERIZER    0x2
289#define I915_NEW_FS            0x4
290#define I915_NEW_BLEND         0x8
291#define I915_NEW_CLIP          0x10
292#define I915_NEW_SCISSOR       0x20
293#define I915_NEW_STIPPLE       0x40
294#define I915_NEW_FRAMEBUFFER   0x80
295#define I915_NEW_ALPHA_TEST    0x100
296#define I915_NEW_DEPTH_STENCIL 0x200
297#define I915_NEW_SAMPLER       0x400
298#define I915_NEW_SAMPLER_VIEW  0x800
299#define I915_NEW_VS_CONSTANTS  0x1000
300#define I915_NEW_FS_CONSTANTS  0x2000
301#define I915_NEW_GS_CONSTANTS  0x4000
302#define I915_NEW_VBO           0x8000
303#define I915_NEW_VS            0x10000
304
305
306/* Driver's internally generated state flags:
307 */
308#define I915_NEW_VERTEX_FORMAT    0x10000
309
310
311/* Dirty flags for hardware emit
312 */
313#define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
314#define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
315#define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
316#define I915_HW_MAP               (1<<I915_CACHE_MAP)
317#define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
318#define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
319#define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
320#define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
321#define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
322
323/* hw flush handling */
324#define I915_FLUSH_CACHE		1
325#define I915_PIPELINE_FLUSH		2
326
327/* split up static state */
328#define I915_DST_BUF_COLOR              1
329#define I915_DST_BUF_DEPTH              2
330#define I915_DST_VARS                   4
331#define I915_DST_RECT                   8
332
333static INLINE
334void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
335{
336   i915->hardware_dirty |= I915_HW_FLUSH;
337   i915->flush_dirty |= flush;
338}
339
340
341/***********************************************************************
342 * i915_prim_emit.c:
343 */
344struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
345
346
347/***********************************************************************
348 * i915_prim_vbuf.c:
349 */
350struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
351
352
353/***********************************************************************
354 * i915_state_emit.c:
355 */
356void i915_emit_hardware_state(struct i915_context *i915 );
357
358
359
360/***********************************************************************
361 * i915_clear.c:
362 */
363void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers, const float *rgba,
364                        double depth, unsigned stencil);
365void i915_clear_render(struct pipe_context *pipe, unsigned buffers, const float *rgba,
366                       double depth, unsigned stencil);
367void i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
368                     double depth, unsigned stencil,
369                     unsigned destx, unsigned desty, unsigned width, unsigned height);
370
371
372/***********************************************************************
373 *
374 */
375void i915_init_state_functions( struct i915_context *i915 );
376void i915_init_fixup_state_functions( struct i915_context *i915 );
377void i915_init_flush_functions( struct i915_context *i915 );
378void i915_init_string_functions( struct i915_context *i915 );
379
380
381/************************************************************************
382 * i915_context.c
383 */
384struct pipe_context *i915_create_context(struct pipe_screen *screen,
385					 void *priv);
386
387
388/***********************************************************************
389 * Inline conversion functions.  These are better-typed than the
390 * macros used previously:
391 */
392static INLINE struct i915_context *
393i915_context( struct pipe_context *pipe )
394{
395   return (struct i915_context *)pipe;
396}
397
398
399#endif
400