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/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][3];
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
199   unsigned LIS4;
200   unsigned LIS7;
201   unsigned sc[1];
202
203   union { float f; unsigned u; } ds[2];
204};
205
206struct i915_sampler_state {
207   struct pipe_sampler_state templ;
208   unsigned state[3];
209   unsigned minlod;
210   unsigned maxlod;
211};
212
213struct i915_velems_state {
214   unsigned count;
215   struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
216};
217
218
219struct i915_context {
220   struct pipe_context base;
221
222   struct i915_winsys *iws;
223
224   struct draw_context *draw;
225
226   /* The most recent drawing state as set by the driver:
227    */
228   const struct i915_blend_state           *blend;
229   const struct i915_sampler_state         *fragment_sampler[PIPE_MAX_SAMPLERS];
230   struct pipe_sampler_state               *vertex_samplers[PIPE_MAX_SAMPLERS];
231   const struct i915_depth_stencil_state   *depth_stencil;
232   const struct i915_rasterizer_state      *rasterizer;
233
234   struct i915_fragment_shader *fs;
235
236   void *vs;
237
238   struct i915_velems_state *velems;
239   unsigned nr_vertex_buffers;
240   struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
241
242   struct pipe_blend_color blend_color;
243   struct pipe_stencil_ref stencil_ref;
244   struct pipe_clip_state clip;
245   struct pipe_resource *constants[PIPE_SHADER_TYPES];
246   struct pipe_framebuffer_state framebuffer;
247   struct pipe_poly_stipple poly_stipple;
248   struct pipe_scissor_state scissor;
249   struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
250   struct pipe_sampler_view *vertex_sampler_views[PIPE_MAX_SAMPLERS];
251   struct pipe_viewport_state viewport;
252
253   unsigned dirty;
254
255   struct pipe_resource *mapped_vs_tex[PIPE_MAX_SAMPLERS];
256   struct i915_winsys_buffer* mapped_vs_tex_buffer[PIPE_MAX_SAMPLERS];
257
258   unsigned num_samplers;
259   unsigned num_fragment_sampler_views;
260   unsigned num_vertex_samplers;
261   unsigned num_vertex_sampler_views;
262
263   struct i915_winsys_batchbuffer *batch;
264
265   /** Vertex buffer */
266   struct i915_winsys_buffer *vbo;
267   size_t vbo_offset;
268   unsigned vbo_flushed;
269
270   struct i915_state current;
271   unsigned hardware_dirty;
272   unsigned immediate_dirty : I915_MAX_IMMEDIATE;
273   unsigned dynamic_dirty : I915_MAX_DYNAMIC;
274   unsigned static_dirty : 4;
275   unsigned flush_dirty : 2;
276
277   struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
278   int num_validation_buffers;
279
280   struct slab_mempool transfer_pool;
281   struct slab_mempool texture_transfer_pool;
282
283   /* state for tracking flushes */
284   int last_fired_vertices;
285   int fired_vertices;
286   int queued_vertices;
287
288   /** blitter/hw-clear */
289   struct blitter_context* blitter;
290};
291
292/* A flag for each state_tracker state object:
293 */
294#define I915_NEW_VIEWPORT      0x1
295#define I915_NEW_RASTERIZER    0x2
296#define I915_NEW_FS            0x4
297#define I915_NEW_BLEND         0x8
298#define I915_NEW_CLIP          0x10
299#define I915_NEW_SCISSOR       0x20
300#define I915_NEW_STIPPLE       0x40
301#define I915_NEW_FRAMEBUFFER   0x80
302#define I915_NEW_ALPHA_TEST    0x100
303#define I915_NEW_DEPTH_STENCIL 0x200
304#define I915_NEW_SAMPLER       0x400
305#define I915_NEW_SAMPLER_VIEW  0x800
306#define I915_NEW_VS_CONSTANTS  0x1000
307#define I915_NEW_FS_CONSTANTS  0x2000
308#define I915_NEW_GS_CONSTANTS  0x4000
309#define I915_NEW_VBO           0x8000
310#define I915_NEW_VS            0x10000
311
312
313/* Driver's internally generated state flags:
314 */
315#define I915_NEW_VERTEX_FORMAT    0x10000
316
317
318/* Dirty flags for hardware emit
319 */
320#define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
321#define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
322#define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
323#define I915_HW_MAP               (1<<I915_CACHE_MAP)
324#define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
325#define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
326#define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
327#define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
328#define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
329
330/* hw flush handling */
331#define I915_FLUSH_CACHE		1
332#define I915_PIPELINE_FLUSH		2
333
334/* split up static state */
335#define I915_DST_BUF_COLOR              1
336#define I915_DST_BUF_DEPTH              2
337#define I915_DST_VARS                   4
338#define I915_DST_RECT                   8
339
340static inline
341void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
342{
343   i915->hardware_dirty |= I915_HW_FLUSH;
344   i915->flush_dirty |= flush;
345}
346
347
348/***********************************************************************
349 * i915_prim_emit.c:
350 */
351struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
352
353
354/***********************************************************************
355 * i915_prim_vbuf.c:
356 */
357struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
358
359
360/***********************************************************************
361 * i915_state.c:
362 */
363void i915_prepare_vertex_sampling(struct i915_context *i915);
364void i915_cleanup_vertex_sampling(struct i915_context *i915);
365
366
367
368/***********************************************************************
369 * i915_state_emit.c:
370 */
371void i915_emit_hardware_state(struct i915_context *i915 );
372
373
374
375/***********************************************************************
376 * i915_clear.c:
377 */
378void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers,
379                        const union pipe_color_union *color,
380                        double depth, unsigned stencil);
381void i915_clear_render(struct pipe_context *pipe, unsigned buffers,
382                       const union pipe_color_union *color,
383                       double depth, unsigned stencil);
384void i915_clear_emit(struct pipe_context *pipe, unsigned buffers,
385                     const union pipe_color_union *color,
386                     double depth, unsigned stencil,
387                     unsigned destx, unsigned desty, unsigned width, unsigned height);
388
389
390/***********************************************************************
391 *
392 */
393void i915_init_state_functions( struct i915_context *i915 );
394void i915_init_flush_functions( struct i915_context *i915 );
395void i915_init_string_functions( struct i915_context *i915 );
396
397
398/************************************************************************
399 * i915_context.c
400 */
401struct pipe_context *i915_create_context(struct pipe_screen *screen,
402					 void *priv, unsigned flags);
403
404
405/***********************************************************************
406 * Inline conversion functions.  These are better-typed than the
407 * macros used previously:
408 */
409static inline struct i915_context *
410i915_context( struct pipe_context *pipe )
411{
412   return (struct i915_context *)pipe;
413}
414
415
416#endif
417