i915_context.h revision cdc920a0 
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_texture {
191   struct pipe_texture base;
192
193   /* Derived from the above:
194    */
195   unsigned stride;
196   unsigned depth_stride;          /* per-image on i945? */
197   unsigned total_nblocksy;
198
199   unsigned sw_tiled; /**< tiled with software flags */
200   unsigned hw_tiled; /**< tiled with hardware fences */
201
202   unsigned nr_images[PIPE_MAX_TEXTURE_LEVELS];
203
204   /* Explicitly store the offset of each image for each cube face or
205    * depth value.  Pretty much have to accept that hardware formats
206    * are going to be so diverse that there is no unified way to
207    * compute the offsets of depth/cube images within a mipmap level,
208    * so have to store them as a lookup table:
209    */
210   unsigned *image_offset[PIPE_MAX_TEXTURE_LEVELS];   /**< array [depth] of offsets */
211
212   /* The data is held here:
213    */
214   struct intel_buffer *buffer;
215};
216
217struct i915_context
218{
219   struct pipe_context base;
220
221   struct intel_winsys *iws;
222
223   struct draw_context *draw;
224
225   /* The most recent drawing state as set by the driver:
226    */
227   const struct i915_blend_state           *blend;
228   const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
229   const struct i915_depth_stencil_state   *depth_stencil;
230   const struct i915_rasterizer_state      *rasterizer;
231
232   struct i915_fragment_shader *fs;
233
234   struct pipe_blend_color blend_color;
235   struct pipe_stencil_ref stencil_ref;
236   struct pipe_clip_state clip;
237   /* XXX unneded */
238   struct pipe_buffer *constants[PIPE_SHADER_TYPES];
239   struct pipe_framebuffer_state framebuffer;
240   struct pipe_poly_stipple poly_stipple;
241   struct pipe_scissor_state scissor;
242   struct i915_texture *texture[PIPE_MAX_SAMPLERS];
243   struct pipe_viewport_state viewport;
244   struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
245
246   unsigned dirty;
247
248   unsigned num_samplers;
249   unsigned num_textures;
250   unsigned num_vertex_elements;
251   unsigned num_vertex_buffers;
252
253   struct intel_batchbuffer *batch;
254
255   /** Vertex buffer */
256   struct intel_buffer *vbo;
257   size_t vbo_offset;
258   unsigned vbo_flushed;
259
260   struct i915_state current;
261   unsigned hardware_dirty;
262
263   unsigned debug;
264};
265
266/* A flag for each state_tracker state object:
267 */
268#define I915_NEW_VIEWPORT      0x1
269#define I915_NEW_RASTERIZER    0x2
270#define I915_NEW_FS            0x4
271#define I915_NEW_BLEND         0x8
272#define I915_NEW_CLIP          0x10
273#define I915_NEW_SCISSOR       0x20
274#define I915_NEW_STIPPLE       0x40
275#define I915_NEW_FRAMEBUFFER   0x80
276#define I915_NEW_ALPHA_TEST    0x100
277#define I915_NEW_DEPTH_STENCIL 0x200
278#define I915_NEW_SAMPLER       0x400
279#define I915_NEW_TEXTURE       0x800
280#define I915_NEW_CONSTANTS     0x1000
281#define I915_NEW_VBO           0x2000
282#define I915_NEW_VS            0x4000
283
284
285/* Driver's internally generated state flags:
286 */
287#define I915_NEW_VERTEX_FORMAT    0x10000
288
289
290/* Dirty flags for hardware emit
291 */
292#define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
293#define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
294#define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
295#define I915_HW_MAP               (1<<I915_CACHE_MAP)
296#define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
297#define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
298#define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
299#define I915_HW_INVARIENT         (1<<(I915_MAX_CACHE+1))
300
301
302/***********************************************************************
303 * i915_prim_emit.c:
304 */
305struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
306
307
308/***********************************************************************
309 * i915_prim_vbuf.c:
310 */
311struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
312
313
314/***********************************************************************
315 * i915_state_emit.c:
316 */
317void i915_emit_hardware_state(struct i915_context *i915 );
318
319
320
321/***********************************************************************
322 * i915_clear.c:
323 */
324void i915_clear( struct pipe_context *pipe, unsigned buffers, const float *rgba,
325                 double depth, unsigned stencil);
326
327
328/***********************************************************************
329 * i915_surface.c:
330 */
331void i915_init_surface_functions( struct i915_context *i915 );
332
333void i915_init_state_functions( struct i915_context *i915 );
334void i915_init_flush_functions( struct i915_context *i915 );
335void i915_init_string_functions( struct i915_context *i915 );
336
337
338/************************************************************************
339 * i915_context.c
340 */
341struct pipe_context *i915_create_context(struct pipe_screen *screen,
342					 void *priv);
343
344
345/***********************************************************************
346 * Inline conversion functions.  These are better-typed than the
347 * macros used previously:
348 */
349static INLINE struct i915_context *
350i915_context( struct pipe_context *pipe )
351{
352   return (struct i915_context *)pipe;
353}
354
355
356
357#endif
358