i915_context.h revision 3464ebd5 
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
171   unsigned id;			/* track lost context events */
172};
173
174struct i915_blend_state {
175   unsigned iab;
176   unsigned modes4;
177   unsigned LIS5;
178   unsigned LIS6;
179};
180
181struct i915_depth_stencil_state {
182   unsigned stencil_modes4;
183   unsigned bfo[2];
184   unsigned stencil_LIS5;
185   unsigned depth_LIS6;
186};
187
188struct i915_rasterizer_state {
189   unsigned light_twoside : 1;
190   unsigned st;
191   enum interp_mode color_interp;
192
193   unsigned LIS4;
194   unsigned LIS7;
195   unsigned sc[1];
196
197   struct pipe_rasterizer_state templ;
198
199   union { float f; unsigned u; } ds[2];
200};
201
202struct i915_sampler_state {
203   unsigned state[3];
204   const struct pipe_sampler_state *templ;
205   unsigned minlod;
206   unsigned maxlod;
207};
208
209struct i915_velems_state {
210   unsigned count;
211   struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
212};
213
214
215struct i915_context {
216   struct pipe_context base;
217
218   struct i915_winsys *iws;
219
220   struct draw_context *draw;
221
222   /* The most recent drawing state as set by the driver:
223    */
224   const struct i915_blend_state           *blend;
225   const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
226   const struct i915_depth_stencil_state   *depth_stencil;
227   const struct i915_rasterizer_state      *rasterizer;
228
229   struct i915_fragment_shader *fs;
230
231   struct pipe_blend_color blend_color;
232   struct pipe_stencil_ref stencil_ref;
233   struct pipe_clip_state clip;
234   struct pipe_resource *constants[PIPE_SHADER_TYPES];
235   struct pipe_framebuffer_state framebuffer;
236   struct pipe_poly_stipple poly_stipple;
237   struct pipe_scissor_state scissor;
238   struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
239   struct pipe_viewport_state viewport;
240   struct pipe_index_buffer index_buffer;
241
242   unsigned dirty;
243
244   unsigned num_samplers;
245   unsigned num_fragment_sampler_views;
246
247   struct i915_winsys_batchbuffer *batch;
248
249   /** Vertex buffer */
250   struct i915_winsys_buffer *vbo;
251   size_t vbo_offset;
252   unsigned vbo_flushed;
253
254   struct i915_state current;
255   unsigned hardware_dirty;
256   unsigned immediate_dirty : I915_MAX_IMMEDIATE;
257   unsigned dynamic_dirty : I915_MAX_DYNAMIC;
258   unsigned static_dirty : 4;
259   unsigned flush_dirty : 2;
260
261   struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
262   int num_validation_buffers;
263
264   struct util_slab_mempool transfer_pool;
265   struct util_slab_mempool texture_transfer_pool;
266
267   int vertices_since_last_flush;
268
269   /** blitter/hw-clear */
270   struct blitter_context* blitter;
271
272   /** State tracking needed by u_blitter for save/restore. */
273   void *saved_fs;
274   void (*saved_bind_fs_state)(struct pipe_context *pipe, void *shader);
275   void *saved_vs;
276   struct pipe_clip_state saved_clip;
277   struct i915_velems_state *saved_velems;
278   unsigned saved_nr_vertex_buffers;
279   struct pipe_vertex_buffer saved_vertex_buffers[PIPE_MAX_ATTRIBS];
280   unsigned saved_nr_samplers;
281   void *saved_samplers[PIPE_MAX_SAMPLERS];
282   void (*saved_bind_sampler_states)(struct pipe_context *pipe,
283                                     unsigned num, void **sampler);
284   unsigned saved_nr_sampler_views;
285   struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
286   void (*saved_set_sampler_views)(struct pipe_context *pipe,
287                                   unsigned num, struct pipe_sampler_view **views);
288};
289
290/* A flag for each state_tracker state object:
291 */
292#define I915_NEW_VIEWPORT      0x1
293#define I915_NEW_RASTERIZER    0x2
294#define I915_NEW_FS            0x4
295#define I915_NEW_BLEND         0x8
296#define I915_NEW_CLIP          0x10
297#define I915_NEW_SCISSOR       0x20
298#define I915_NEW_STIPPLE       0x40
299#define I915_NEW_FRAMEBUFFER   0x80
300#define I915_NEW_ALPHA_TEST    0x100
301#define I915_NEW_DEPTH_STENCIL 0x200
302#define I915_NEW_SAMPLER       0x400
303#define I915_NEW_SAMPLER_VIEW  0x800
304#define I915_NEW_VS_CONSTANTS  0x1000
305#define I915_NEW_FS_CONSTANTS  0x2000
306#define I915_NEW_GS_CONSTANTS  0x4000
307#define I915_NEW_VBO           0x8000
308#define I915_NEW_VS            0x10000
309
310
311/* Driver's internally generated state flags:
312 */
313#define I915_NEW_VERTEX_FORMAT    0x10000
314
315
316/* Dirty flags for hardware emit
317 */
318#define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
319#define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
320#define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
321#define I915_HW_MAP               (1<<I915_CACHE_MAP)
322#define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
323#define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
324#define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
325#define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
326#define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
327
328/* hw flush handling */
329#define I915_FLUSH_CACHE		1
330#define I915_PIPELINE_FLUSH		2
331
332/* split up static state */
333#define I915_DST_BUF_COLOR              1
334#define I915_DST_BUF_DEPTH              2
335#define I915_DST_VARS                   4
336#define I915_DST_RECT                   8
337
338static INLINE
339void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
340{
341   i915->hardware_dirty |= I915_HW_FLUSH;
342   i915->flush_dirty |= flush;
343}
344
345
346/***********************************************************************
347 * i915_prim_emit.c:
348 */
349struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
350
351
352/***********************************************************************
353 * i915_prim_vbuf.c:
354 */
355struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
356
357
358/***********************************************************************
359 * i915_state_emit.c:
360 */
361void i915_emit_hardware_state(struct i915_context *i915 );
362
363
364
365/***********************************************************************
366 * i915_clear.c:
367 */
368void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers, const float *rgba,
369                        double depth, unsigned stencil);
370void i915_clear_render(struct pipe_context *pipe, unsigned buffers, const float *rgba,
371                       double depth, unsigned stencil);
372void i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
373                     double depth, unsigned stencil,
374                     unsigned destx, unsigned desty, unsigned width, unsigned height);
375
376
377/***********************************************************************
378 *
379 */
380void i915_init_state_functions( struct i915_context *i915 );
381void i915_init_fixup_state_functions( struct i915_context *i915 );
382void i915_init_flush_functions( struct i915_context *i915 );
383void i915_init_string_functions( struct i915_context *i915 );
384
385
386/************************************************************************
387 * i915_context.c
388 */
389struct pipe_context *i915_create_context(struct pipe_screen *screen,
390					 void *priv);
391
392
393/***********************************************************************
394 * Inline conversion functions.  These are better-typed than the
395 * macros used previously:
396 */
397static INLINE struct i915_context *
398i915_context( struct pipe_context *pipe )
399{
400   return (struct i915_context *)pipe;
401}
402
403
404#endif
405