i915_context.h revision 685340a53e1dcb2a888e634ee71ba24356befe69 
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
41struct intel_winsys;
42struct intel_buffer;
43struct intel_batchbuffer;
44
45
46#define I915_TEX_UNITS 8
47
48#define I915_DYNAMIC_MODES4       0
49#define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
50#define I915_DYNAMIC_DEPTHSCALE_1 2
51#define I915_DYNAMIC_IAB          3
52#define I915_DYNAMIC_BC_0         4 /* just the header */
53#define I915_DYNAMIC_BC_1         5
54#define I915_DYNAMIC_BFO_0        6
55#define I915_DYNAMIC_BFO_1        7
56#define I915_DYNAMIC_STP_0        8
57#define I915_DYNAMIC_STP_1        9
58#define I915_DYNAMIC_SC_ENA_0     10
59#define I915_DYNAMIC_SC_RECT_0    11
60#define I915_DYNAMIC_SC_RECT_1    12
61#define I915_DYNAMIC_SC_RECT_2    13
62#define I915_MAX_DYNAMIC          14
63
64
65#define I915_IMMEDIATE_S0         0
66#define I915_IMMEDIATE_S1         1
67#define I915_IMMEDIATE_S2         2
68#define I915_IMMEDIATE_S3         3
69#define I915_IMMEDIATE_S4         4
70#define I915_IMMEDIATE_S5         5
71#define I915_IMMEDIATE_S6         6
72#define I915_IMMEDIATE_S7         7
73#define I915_MAX_IMMEDIATE        8
74
75/* These must mach the order of LI0_STATE_* bits, as they will be used
76 * to generate hardware packets:
77 */
78#define I915_CACHE_STATIC         0
79#define I915_CACHE_DYNAMIC        1 /* handled specially */
80#define I915_CACHE_SAMPLER        2
81#define I915_CACHE_MAP            3
82#define I915_CACHE_PROGRAM        4
83#define I915_CACHE_CONSTANTS      5
84#define I915_MAX_CACHE            6
85
86#define I915_MAX_CONSTANT  32
87
88
89/** See constant_flags[] below */
90#define I915_CONSTFLAG_USER 0x1f
91
92
93/**
94 * Subclass of pipe_shader_state
95 */
96struct i915_fragment_shader
97{
98   struct pipe_shader_state state;
99
100   struct tgsi_shader_info info;
101
102   uint *program;
103   uint program_len;
104
105   /**
106    * constants introduced during translation.
107    * These are placed at the end of the constant buffer and grow toward
108    * the beginning (eg: slot 31, 30 29, ...)
109    * User-provided constants start at 0.
110    * This allows both types of constants to co-exist (until there's too many)
111    * and doesn't require regenerating/changing the fragment program to
112    * shuffle constants around.
113    */
114   uint num_constants;
115   float constants[I915_MAX_CONSTANT][4];
116
117   /**
118    * Status of each constant
119    * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
120    * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
121    * Else, the bitmask indicates which components are occupied by immediates.
122    */
123   ubyte constant_flags[I915_MAX_CONSTANT];
124};
125
126
127struct i915_cache_context;
128
129/* Use to calculate differences between state emitted to hardware and
130 * current driver-calculated state.
131 */
132struct i915_state
133{
134   unsigned immediate[I915_MAX_IMMEDIATE];
135   unsigned dynamic[I915_MAX_DYNAMIC];
136
137   float constants[PIPE_SHADER_TYPES][I915_MAX_CONSTANT][4];
138   /** number of constants passed in through a constant buffer */
139   uint num_user_constants[PIPE_SHADER_TYPES];
140
141   /* texture sampler state */
142   unsigned sampler[I915_TEX_UNITS][3];
143   unsigned sampler_enable_flags;
144   unsigned sampler_enable_nr;
145
146   /* texture image buffers */
147   unsigned texbuffer[I915_TEX_UNITS][2];
148
149   /** Describes the current hardware vertex layout */
150   struct vertex_info vertex_info;
151
152   unsigned id;			/* track lost context events */
153};
154
155struct i915_blend_state {
156   unsigned iab;
157   unsigned modes4;
158   unsigned LIS5;
159   unsigned LIS6;
160};
161
162struct i915_depth_stencil_state {
163   unsigned stencil_modes4;
164   unsigned bfo[2];
165   unsigned stencil_LIS5;
166   unsigned depth_LIS6;
167};
168
169struct i915_rasterizer_state {
170   unsigned light_twoside : 1;
171   unsigned st;
172   enum interp_mode color_interp;
173
174   unsigned LIS4;
175   unsigned LIS7;
176   unsigned sc[1];
177
178   const struct pipe_rasterizer_state *templ;
179
180   union { float f; unsigned u; } ds[2];
181};
182
183struct i915_sampler_state {
184   unsigned state[3];
185   const struct pipe_sampler_state *templ;
186   unsigned minlod;
187   unsigned maxlod;
188};
189
190struct i915_velems_state {
191   unsigned count;
192   struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
193};
194
195#define I915_MAX_TEXTURE_2D_LEVELS 11  /* max 1024x1024 */
196#define I915_MAX_TEXTURE_3D_LEVELS  8  /* max 128x128x128 */
197
198struct i915_texture {
199   struct pipe_texture base;
200
201   /* Derived from the above:
202    */
203   unsigned stride;
204   unsigned depth_stride;          /* per-image on i945? */
205   unsigned total_nblocksy;
206
207   unsigned sw_tiled; /**< tiled with software flags */
208   unsigned hw_tiled; /**< tiled with hardware fences */
209
210   unsigned nr_images[I915_MAX_TEXTURE_2D_LEVELS];
211
212   /* Explicitly store the offset of each image for each cube face or
213    * depth value.  Pretty much have to accept that hardware formats
214    * are going to be so diverse that there is no unified way to
215    * compute the offsets of depth/cube images within a mipmap level,
216    * so have to store them as a lookup table:
217    */
218   unsigned *image_offset[I915_MAX_TEXTURE_2D_LEVELS];   /**< array [depth] of offsets */
219
220   /* The data is held here:
221    */
222   struct intel_buffer *buffer;
223};
224
225struct i915_context
226{
227   struct pipe_context base;
228
229   struct intel_winsys *iws;
230
231   struct draw_context *draw;
232
233   /* The most recent drawing state as set by the driver:
234    */
235   const struct i915_blend_state           *blend;
236   const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
237   const struct i915_depth_stencil_state   *depth_stencil;
238   const struct i915_rasterizer_state      *rasterizer;
239
240   struct i915_fragment_shader *fs;
241
242   struct pipe_blend_color blend_color;
243   struct pipe_stencil_ref stencil_ref;
244   struct pipe_clip_state clip;
245   /* XXX unneded */
246   struct pipe_buffer *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 i915_texture *texture[PIPE_MAX_SAMPLERS];
251   struct pipe_viewport_state viewport;
252   struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
253
254   unsigned dirty;
255
256   unsigned num_samplers;
257   unsigned num_textures;
258   unsigned num_vertex_buffers;
259
260   struct intel_batchbuffer *batch;
261
262   /** Vertex buffer */
263   struct intel_buffer *vbo;
264   size_t vbo_offset;
265   unsigned vbo_flushed;
266
267   struct i915_state current;
268   unsigned hardware_dirty;
269
270   unsigned debug;
271};
272
273/* A flag for each state_tracker state object:
274 */
275#define I915_NEW_VIEWPORT      0x1
276#define I915_NEW_RASTERIZER    0x2
277#define I915_NEW_FS            0x4
278#define I915_NEW_BLEND         0x8
279#define I915_NEW_CLIP          0x10
280#define I915_NEW_SCISSOR       0x20
281#define I915_NEW_STIPPLE       0x40
282#define I915_NEW_FRAMEBUFFER   0x80
283#define I915_NEW_ALPHA_TEST    0x100
284#define I915_NEW_DEPTH_STENCIL 0x200
285#define I915_NEW_SAMPLER       0x400
286#define I915_NEW_TEXTURE       0x800
287#define I915_NEW_CONSTANTS     0x1000
288#define I915_NEW_VBO           0x2000
289#define I915_NEW_VS            0x4000
290
291
292/* Driver's internally generated state flags:
293 */
294#define I915_NEW_VERTEX_FORMAT    0x10000
295
296
297/* Dirty flags for hardware emit
298 */
299#define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
300#define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
301#define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
302#define I915_HW_MAP               (1<<I915_CACHE_MAP)
303#define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
304#define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
305#define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
306#define I915_HW_INVARIENT         (1<<(I915_MAX_CACHE+1))
307
308
309/***********************************************************************
310 * i915_prim_emit.c:
311 */
312struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
313
314
315/***********************************************************************
316 * i915_prim_vbuf.c:
317 */
318struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
319
320
321/***********************************************************************
322 * i915_state_emit.c:
323 */
324void i915_emit_hardware_state(struct i915_context *i915 );
325
326
327
328/***********************************************************************
329 * i915_clear.c:
330 */
331void i915_clear( struct pipe_context *pipe, unsigned buffers, const float *rgba,
332                 double depth, unsigned stencil);
333
334
335/***********************************************************************
336 * i915_surface.c:
337 */
338void i915_init_surface_functions( struct i915_context *i915 );
339
340void i915_init_state_functions( struct i915_context *i915 );
341void i915_init_flush_functions( struct i915_context *i915 );
342void i915_init_string_functions( struct i915_context *i915 );
343
344
345/************************************************************************
346 * i915_context.c
347 */
348struct pipe_context *i915_create_context(struct pipe_screen *screen,
349					 void *priv);
350
351
352/***********************************************************************
353 * Inline conversion functions.  These are better-typed than the
354 * macros used previously:
355 */
356static INLINE struct i915_context *
357i915_context( struct pipe_context *pipe )
358{
359   return (struct i915_context *)pipe;
360}
361
362
363
364#endif
365