i915_context.h revision af69d88d 
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 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 *decl;
108   uint decl_len;
109
110   uint *program;
111   uint program_len;
112
113   /**
114    * constants introduced during translation.
115    * These are placed at the end of the constant buffer and grow toward
116    * the beginning (eg: slot 31, 30 29, ...)
117    * User-provided constants start at 0.
118    * This allows both types of constants to co-exist (until there's too many)
119    * and doesn't require regenerating/changing the fragment program to
120    * shuffle constants around.
121    */
122   uint num_constants;
123   float constants[I915_MAX_CONSTANT][4];
124
125   /**
126    * Status of each constant
127    * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
128    * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
129    * Else, the bitmask indicates which components are occupied by immediates.
130    */
131   ubyte constant_flags[I915_MAX_CONSTANT];
132
133   /**
134    * The mapping between generics and hw texture coords.
135    * We need to share this between the vertex and fragment stages.
136    **/
137   int generic_mapping[I915_TEX_UNITS];
138};
139
140
141struct i915_cache_context;
142
143/* Use to calculate differences between state emitted to hardware and
144 * current driver-calculated state.
145 */
146struct i915_state
147{
148   unsigned immediate[I915_MAX_IMMEDIATE];
149   unsigned dynamic[I915_MAX_DYNAMIC];
150
151   /** number of constants passed in through a constant buffer */
152   uint num_user_constants[PIPE_SHADER_TYPES];
153
154   /* texture sampler state */
155   unsigned sampler[I915_TEX_UNITS][3];
156   unsigned sampler_enable_flags;
157   unsigned sampler_enable_nr;
158
159   /* texture image buffers */
160   unsigned texbuffer[I915_TEX_UNITS][2];
161
162   /** Describes the current hardware vertex layout */
163   struct vertex_info vertex_info;
164
165   /* static state (dst/depth buffer state) */
166   struct i915_winsys_buffer *cbuf_bo;
167   unsigned cbuf_flags;
168   struct i915_winsys_buffer *depth_bo;
169   unsigned depth_flags;
170   unsigned dst_buf_vars;
171   uint32_t draw_offset;
172   uint32_t draw_size;
173   uint32_t target_fixup_format;
174   uint32_t fixup_swizzle;
175
176   unsigned id;			/* track lost context events */
177};
178
179struct i915_blend_state {
180   unsigned iab;
181   unsigned modes4;
182   unsigned LIS5;
183   unsigned LIS6;
184};
185
186struct i915_depth_stencil_state {
187   unsigned stencil_modes4;
188   unsigned bfo[2];
189   unsigned stencil_LIS5;
190   unsigned depth_LIS6;
191};
192
193struct i915_rasterizer_state {
194   struct pipe_rasterizer_state templ;
195
196   unsigned light_twoside : 1;
197   unsigned st;
198   enum interp_mode color_interp;
199
200   unsigned LIS4;
201   unsigned LIS7;
202   unsigned sc[1];
203
204   union { float f; unsigned u; } ds[2];
205};
206
207struct i915_sampler_state {
208   struct pipe_sampler_state templ;
209   unsigned state[3];
210   unsigned minlod;
211   unsigned maxlod;
212};
213
214struct i915_velems_state {
215   unsigned count;
216   struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
217};
218
219
220struct i915_context {
221   struct pipe_context base;
222
223   struct i915_winsys *iws;
224
225   struct draw_context *draw;
226
227   /* The most recent drawing state as set by the driver:
228    */
229   const struct i915_blend_state           *blend;
230   const struct i915_sampler_state         *fragment_sampler[PIPE_MAX_SAMPLERS];
231   struct pipe_sampler_state               *vertex_samplers[PIPE_MAX_SAMPLERS];
232   const struct i915_depth_stencil_state   *depth_stencil;
233   const struct i915_rasterizer_state      *rasterizer;
234
235   struct i915_fragment_shader *fs;
236
237   void *vs;
238
239   struct i915_velems_state *velems;
240   unsigned nr_vertex_buffers;
241   struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
242
243   struct pipe_blend_color blend_color;
244   struct pipe_stencil_ref stencil_ref;
245   struct pipe_clip_state clip;
246   struct pipe_resource *constants[PIPE_SHADER_TYPES];
247   struct pipe_framebuffer_state framebuffer;
248   struct pipe_poly_stipple poly_stipple;
249   struct pipe_scissor_state scissor;
250   struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
251   struct pipe_sampler_view *vertex_sampler_views[PIPE_MAX_SAMPLERS];
252   struct pipe_viewport_state viewport;
253   struct pipe_index_buffer index_buffer;
254
255   unsigned dirty;
256
257   struct pipe_resource *mapped_vs_tex[PIPE_MAX_SAMPLERS];
258   struct i915_winsys_buffer* mapped_vs_tex_buffer[PIPE_MAX_SAMPLERS];
259
260   unsigned num_samplers;
261   unsigned num_fragment_sampler_views;
262   unsigned num_vertex_samplers;
263   unsigned num_vertex_sampler_views;
264
265   struct i915_winsys_batchbuffer *batch;
266
267   /** Vertex buffer */
268   struct i915_winsys_buffer *vbo;
269   size_t vbo_offset;
270   unsigned vbo_flushed;
271
272   struct i915_state current;
273   unsigned hardware_dirty;
274   unsigned immediate_dirty : I915_MAX_IMMEDIATE;
275   unsigned dynamic_dirty : I915_MAX_DYNAMIC;
276   unsigned static_dirty : 4;
277   unsigned flush_dirty : 2;
278
279   struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
280   int num_validation_buffers;
281
282   struct util_slab_mempool transfer_pool;
283   struct util_slab_mempool texture_transfer_pool;
284
285   /* state for tracking flushes */
286   int last_fired_vertices;
287   int fired_vertices;
288   int queued_vertices;
289
290   /** blitter/hw-clear */
291   struct blitter_context* blitter;
292};
293
294/* A flag for each state_tracker state object:
295 */
296#define I915_NEW_VIEWPORT      0x1
297#define I915_NEW_RASTERIZER    0x2
298#define I915_NEW_FS            0x4
299#define I915_NEW_BLEND         0x8
300#define I915_NEW_CLIP          0x10
301#define I915_NEW_SCISSOR       0x20
302#define I915_NEW_STIPPLE       0x40
303#define I915_NEW_FRAMEBUFFER   0x80
304#define I915_NEW_ALPHA_TEST    0x100
305#define I915_NEW_DEPTH_STENCIL 0x200
306#define I915_NEW_SAMPLER       0x400
307#define I915_NEW_SAMPLER_VIEW  0x800
308#define I915_NEW_VS_CONSTANTS  0x1000
309#define I915_NEW_FS_CONSTANTS  0x2000
310#define I915_NEW_GS_CONSTANTS  0x4000
311#define I915_NEW_VBO           0x8000
312#define I915_NEW_VS            0x10000
313
314
315/* Driver's internally generated state flags:
316 */
317#define I915_NEW_VERTEX_FORMAT    0x10000
318
319
320/* Dirty flags for hardware emit
321 */
322#define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
323#define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
324#define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
325#define I915_HW_MAP               (1<<I915_CACHE_MAP)
326#define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
327#define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
328#define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
329#define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
330#define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
331
332/* hw flush handling */
333#define I915_FLUSH_CACHE		1
334#define I915_PIPELINE_FLUSH		2
335
336/* split up static state */
337#define I915_DST_BUF_COLOR              1
338#define I915_DST_BUF_DEPTH              2
339#define I915_DST_VARS                   4
340#define I915_DST_RECT                   8
341
342static INLINE
343void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
344{
345   i915->hardware_dirty |= I915_HW_FLUSH;
346   i915->flush_dirty |= flush;
347}
348
349
350/***********************************************************************
351 * i915_prim_emit.c:
352 */
353struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
354
355
356/***********************************************************************
357 * i915_prim_vbuf.c:
358 */
359struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
360
361
362/***********************************************************************
363 * i915_state.c:
364 */
365void i915_prepare_vertex_sampling(struct i915_context *i915);
366void i915_cleanup_vertex_sampling(struct i915_context *i915);
367
368
369
370/***********************************************************************
371 * i915_state_emit.c:
372 */
373void i915_emit_hardware_state(struct i915_context *i915 );
374
375
376
377/***********************************************************************
378 * i915_clear.c:
379 */
380void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers,
381                        const union pipe_color_union *color,
382                        double depth, unsigned stencil);
383void i915_clear_render(struct pipe_context *pipe, unsigned buffers,
384                       const union pipe_color_union *color,
385                       double depth, unsigned stencil);
386void i915_clear_emit(struct pipe_context *pipe, unsigned buffers,
387                     const union pipe_color_union *color,
388                     double depth, unsigned stencil,
389                     unsigned destx, unsigned desty, unsigned width, unsigned height);
390
391
392/***********************************************************************
393 *
394 */
395void i915_init_state_functions( struct i915_context *i915 );
396void i915_init_flush_functions( struct i915_context *i915 );
397void i915_init_string_functions( struct i915_context *i915 );
398
399
400/************************************************************************
401 * i915_context.c
402 */
403struct pipe_context *i915_create_context(struct pipe_screen *screen,
404					 void *priv);
405
406
407/***********************************************************************
408 * Inline conversion functions.  These are better-typed than the
409 * macros used previously:
410 */
411static INLINE struct i915_context *
412i915_context( struct pipe_context *pipe )
413{
414   return (struct i915_context *)pipe;
415}
416
417
418#endif
419