summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/i915/i915_context.h
blob: ac02ab23325bcbab8ac359482d4320045cd3cac1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
 /**************************************************************************
 * 
 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#ifndef I915_CONTEXT_H
#define I915_CONTEXT_H


#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_state.h"

#include "draw/draw_vertex.h"

#include "tgsi/tgsi_scan.h"


struct i915_winsys;
struct i915_winsys_buffer;
struct i915_winsys_batchbuffer;


#define I915_TEX_UNITS 8

#define I915_DYNAMIC_MODES4       0
#define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
#define I915_DYNAMIC_DEPTHSCALE_1 2 
#define I915_DYNAMIC_IAB          3
#define I915_DYNAMIC_BC_0         4 /* just the header */
#define I915_DYNAMIC_BC_1         5
#define I915_DYNAMIC_BFO_0        6 
#define I915_DYNAMIC_BFO_1        7
#define I915_DYNAMIC_STP_0        8 
#define I915_DYNAMIC_STP_1        9 
#define I915_DYNAMIC_SC_ENA_0     10 
#define I915_DYNAMIC_SC_RECT_0    11 
#define I915_DYNAMIC_SC_RECT_1    12 
#define I915_DYNAMIC_SC_RECT_2    13 
#define I915_MAX_DYNAMIC          14


#define I915_IMMEDIATE_S0         0
#define I915_IMMEDIATE_S1         1
#define I915_IMMEDIATE_S2         2
#define I915_IMMEDIATE_S3         3
#define I915_IMMEDIATE_S4         4
#define I915_IMMEDIATE_S5         5
#define I915_IMMEDIATE_S6         6
#define I915_IMMEDIATE_S7         7
#define I915_MAX_IMMEDIATE        8

/* These must mach the order of LI0_STATE_* bits, as they will be used
 * to generate hardware packets:
 */
#define I915_CACHE_STATIC         0 
#define I915_CACHE_DYNAMIC        1 /* handled specially */
#define I915_CACHE_SAMPLER        2
#define I915_CACHE_MAP            3
#define I915_CACHE_PROGRAM        4
#define I915_CACHE_CONSTANTS      5
#define I915_MAX_CACHE            6

#define I915_MAX_CONSTANT  32


/** See constant_flags[] below */
#define I915_CONSTFLAG_USER 0x1f


/**
 * Subclass of pipe_shader_state
 */
struct i915_fragment_shader
{
   struct pipe_shader_state state;

   struct tgsi_shader_info info;

   uint *program;
   uint program_len;

   /**
    * constants introduced during translation.
    * These are placed at the end of the constant buffer and grow toward
    * the beginning (eg: slot 31, 30 29, ...)
    * User-provided constants start at 0.
    * This allows both types of constants to co-exist (until there's too many)
    * and doesn't require regenerating/changing the fragment program to
    * shuffle constants around.
    */
   uint num_constants;
   float constants[I915_MAX_CONSTANT][4];

   /**
    * Status of each constant
    * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
    * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
    * Else, the bitmask indicates which components are occupied by immediates.
    */
   ubyte constant_flags[I915_MAX_CONSTANT];
};


struct i915_cache_context;

/* Use to calculate differences between state emitted to hardware and
 * current driver-calculated state.  
 */
struct i915_state 
{
   unsigned immediate[I915_MAX_IMMEDIATE];
   unsigned dynamic[I915_MAX_DYNAMIC];

   float constants[PIPE_SHADER_TYPES][I915_MAX_CONSTANT][4];
   /** number of constants passed in through a constant buffer */
   uint num_user_constants[PIPE_SHADER_TYPES];

   /* texture sampler state */
   unsigned sampler[I915_TEX_UNITS][3];
   unsigned sampler_enable_flags;
   unsigned sampler_enable_nr;

   /* texture image buffers */
   unsigned texbuffer[I915_TEX_UNITS][2];

   /** Describes the current hardware vertex layout */
   struct vertex_info vertex_info;

   unsigned id;			/* track lost context events */
};

struct i915_blend_state {
   unsigned iab;
   unsigned modes4;
   unsigned LIS5;
   unsigned LIS6;
};

struct i915_depth_stencil_state {
   unsigned stencil_modes4;
   unsigned bfo[2];
   unsigned stencil_LIS5;
   unsigned depth_LIS6;
};

struct i915_rasterizer_state {
   unsigned light_twoside : 1;
   unsigned st;
   enum interp_mode color_interp;

   unsigned LIS4;
   unsigned LIS7;
   unsigned sc[1];

   const struct pipe_rasterizer_state *templ;

   union { float f; unsigned u; } ds[2];
};

struct i915_sampler_state {
   unsigned state[3];
   const struct pipe_sampler_state *templ;
   unsigned minlod;
   unsigned maxlod;
};

struct i915_velems_state {
   unsigned count;
   struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
};


struct i915_context
{
   struct pipe_context base;

   struct i915_winsys *iws;

   struct draw_context *draw;

   /* The most recent drawing state as set by the driver:
    */
   const struct i915_blend_state           *blend;
   const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
   const struct i915_depth_stencil_state   *depth_stencil;
   const struct i915_rasterizer_state      *rasterizer;

   struct i915_fragment_shader *fs;

   struct pipe_blend_color blend_color;
   struct pipe_stencil_ref stencil_ref;
   struct pipe_clip_state clip;
   /* XXX unneded */
   struct pipe_resource *constants[PIPE_SHADER_TYPES];
   struct pipe_framebuffer_state framebuffer;
   struct pipe_poly_stipple poly_stipple;
   struct pipe_scissor_state scissor;
   struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
   struct pipe_viewport_state viewport;
   struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];

   unsigned dirty;

   unsigned num_samplers;
   unsigned num_fragment_sampler_views;
   unsigned num_vertex_buffers;

   struct i915_winsys_batchbuffer *batch;

   /** Vertex buffer */
   struct i915_winsys_buffer *vbo;
   size_t vbo_offset;
   unsigned vbo_flushed;

   struct i915_state current;
   unsigned hardware_dirty;
};

/* A flag for each state_tracker state object:
 */
#define I915_NEW_VIEWPORT      0x1
#define I915_NEW_RASTERIZER    0x2
#define I915_NEW_FS            0x4
#define I915_NEW_BLEND         0x8
#define I915_NEW_CLIP          0x10
#define I915_NEW_SCISSOR       0x20
#define I915_NEW_STIPPLE       0x40
#define I915_NEW_FRAMEBUFFER   0x80
#define I915_NEW_ALPHA_TEST    0x100
#define I915_NEW_DEPTH_STENCIL 0x200
#define I915_NEW_SAMPLER       0x400
#define I915_NEW_SAMPLER_VIEW  0x800
#define I915_NEW_CONSTANTS     0x1000
#define I915_NEW_VBO           0x2000
#define I915_NEW_VS            0x4000


/* Driver's internally generated state flags:
 */
#define I915_NEW_VERTEX_FORMAT    0x10000


/* Dirty flags for hardware emit
 */
#define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
#define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
#define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
#define I915_HW_MAP               (1<<I915_CACHE_MAP)
#define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
#define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
#define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
#define I915_HW_INVARIENT         (1<<(I915_MAX_CACHE+1))


/***********************************************************************
 * i915_prim_emit.c: 
 */
struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );


/***********************************************************************
 * i915_prim_vbuf.c: 
 */
struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );


/***********************************************************************
 * i915_state_emit.c: 
 */
void i915_emit_hardware_state(struct i915_context *i915 );



/***********************************************************************
 * i915_clear.c: 
 */
void i915_clear( struct pipe_context *pipe, unsigned buffers, const float *rgba,
                 double depth, unsigned stencil);


/***********************************************************************
 * 
 */
void i915_init_state_functions( struct i915_context *i915 );
void i915_init_flush_functions( struct i915_context *i915 );
void i915_init_string_functions( struct i915_context *i915 );


/************************************************************************
 * i915_context.c
 */
struct pipe_context *i915_create_context(struct pipe_screen *screen,
					 void *priv);




/***********************************************************************
 * Inline conversion functions.  These are better-typed than the
 * macros used previously:
 */
static INLINE struct i915_context *
i915_context( struct pipe_context *pipe )
{
   return (struct i915_context *)pipe;
}



#endif