1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #ifndef I915_CONTEXT_H
29 #define I915_CONTEXT_H
32 #include "pipe/p_context.h"
33 #include "pipe/p_defines.h"
34 #include "pipe/p_state.h"
36 #include "draw/draw_vertex.h"
38 #include "tgsi/util/tgsi_scan.h"
41 #define I915_TEX_UNITS 8
43 #define I915_DYNAMIC_MODES4 0
44 #define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
45 #define I915_DYNAMIC_DEPTHSCALE_1 2
46 #define I915_DYNAMIC_IAB 3
47 #define I915_DYNAMIC_BC_0 4 /* just the header */
48 #define I915_DYNAMIC_BC_1 5
49 #define I915_DYNAMIC_BFO_0 6
50 #define I915_DYNAMIC_BFO_1 7
51 #define I915_DYNAMIC_STP_0 8
52 #define I915_DYNAMIC_STP_1 9
53 #define I915_DYNAMIC_SC_ENA_0 10
54 #define I915_DYNAMIC_SC_RECT_0 11
55 #define I915_DYNAMIC_SC_RECT_1 12
56 #define I915_DYNAMIC_SC_RECT_2 13
57 #define I915_MAX_DYNAMIC 14
60 #define I915_IMMEDIATE_S0 0
61 #define I915_IMMEDIATE_S1 1
62 #define I915_IMMEDIATE_S2 2
63 #define I915_IMMEDIATE_S3 3
64 #define I915_IMMEDIATE_S4 4
65 #define I915_IMMEDIATE_S5 5
66 #define I915_IMMEDIATE_S6 6
67 #define I915_IMMEDIATE_S7 7
68 #define I915_MAX_IMMEDIATE 8
70 /* These must mach the order of LI0_STATE_* bits, as they will be used
71 * to generate hardware packets:
73 #define I915_CACHE_STATIC 0
74 #define I915_CACHE_DYNAMIC 1 /* handled specially */
75 #define I915_CACHE_SAMPLER 2
76 #define I915_CACHE_MAP 3
77 #define I915_CACHE_PROGRAM 4
78 #define I915_CACHE_CONSTANTS 5
79 #define I915_MAX_CACHE 6
81 #define I915_MAX_CONSTANT 32
84 /** See constant_flags[] below */
85 #define I915_CONSTFLAG_USER 0x1f
89 * Subclass of pipe_shader_state
91 struct i915_fragment_shader
93 struct pipe_shader_state state
;
95 struct tgsi_shader_info info
;
101 * constants introduced during translation.
102 * These are placed at the end of the constant buffer and grow toward
103 * the beginning (eg: slot 31, 30 29, ...)
104 * User-provided constants start at 0.
105 * This allows both types of constants to co-exist (until there's too many)
106 * and doesn't require regenerating/changing the fragment program to
107 * shuffle constants around.
110 float constants
[I915_MAX_CONSTANT
][4];
113 * Status of each constant
114 * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
115 * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
116 * Else, the bitmask indicates which components are occupied by immediates.
118 ubyte constant_flags
[I915_MAX_CONSTANT
];
122 struct i915_cache_context
;
124 /* Use to calculate differences between state emitted to hardware and
125 * current driver-calculated state.
129 unsigned immediate
[I915_MAX_IMMEDIATE
];
130 unsigned dynamic
[I915_MAX_DYNAMIC
];
132 float constants
[PIPE_SHADER_TYPES
][I915_MAX_CONSTANT
][4];
133 /** number of constants passed in through a constant buffer */
134 uint num_user_constants
[PIPE_SHADER_TYPES
];
136 /* texture sampler state */
137 unsigned sampler
[I915_TEX_UNITS
][3];
138 unsigned sampler_enable_flags
;
139 unsigned sampler_enable_nr
;
141 /* texture image buffers */
142 unsigned texbuffer
[I915_TEX_UNITS
][2];
144 /** Describes the current hardware vertex layout */
145 struct vertex_info vertex_info
;
147 unsigned id
; /* track lost context events */
150 struct i915_blend_state
{
157 struct i915_depth_stencil_state
{
158 unsigned stencil_modes4
;
160 unsigned stencil_LIS5
;
164 struct i915_rasterizer_state
{
165 int light_twoside
: 1;
167 enum interp_mode color_interp
;
173 const struct pipe_rasterizer_state
*templ
;
175 union { float f
; unsigned u
; } ds
[2];
178 struct i915_sampler_state
{
180 const struct pipe_sampler_state
*templ
;
184 struct i915_texture
{
185 struct pipe_texture base
;
187 /* Derived from the above:
190 unsigned depth_pitch
; /* per-image on i945? */
191 unsigned total_height
;
193 unsigned nr_images
[PIPE_MAX_TEXTURE_LEVELS
];
195 /* Explicitly store the offset of each image for each cube face or
196 * depth value. Pretty much have to accept that hardware formats
197 * are going to be so diverse that there is no unified way to
198 * compute the offsets of depth/cube images within a mipmap level,
199 * so have to store them as a lookup table:
201 unsigned *image_offset
[PIPE_MAX_TEXTURE_LEVELS
]; /**< array [depth] of offsets */
203 /* Includes image offset tables:
205 unsigned level_offset
[PIPE_MAX_TEXTURE_LEVELS
];
207 /* The data is held here:
209 struct pipe_buffer
*buffer
;
214 struct pipe_context pipe
;
215 struct i915_winsys
*winsys
;
216 struct draw_context
*draw
;
218 /* The most recent drawing state as set by the driver:
220 const struct i915_blend_state
*blend
;
221 const struct i915_sampler_state
*sampler
[PIPE_MAX_SAMPLERS
];
222 const struct i915_depth_stencil_state
*depth_stencil
;
223 const struct i915_rasterizer_state
*rasterizer
;
225 struct i915_fragment_shader
*fs
;
227 struct pipe_blend_color blend_color
;
228 struct pipe_clip_state clip
;
229 struct pipe_constant_buffer constants
[PIPE_SHADER_TYPES
];
230 struct pipe_framebuffer_state framebuffer
;
231 struct pipe_poly_stipple poly_stipple
;
232 struct pipe_scissor_state scissor
;
233 struct i915_texture
*texture
[PIPE_MAX_SAMPLERS
];
234 struct pipe_viewport_state viewport
;
235 struct pipe_vertex_buffer vertex_buffer
[PIPE_MAX_ATTRIBS
];
239 unsigned num_samplers
;
240 unsigned num_textures
;
242 unsigned *batch_start
;
245 struct pipe_buffer
*vbo
;
247 struct i915_state current
;
248 unsigned hardware_dirty
;
253 /* A flag for each state_tracker state object:
255 #define I915_NEW_VIEWPORT 0x1
256 #define I915_NEW_RASTERIZER 0x2
257 #define I915_NEW_FS 0x4
258 #define I915_NEW_BLEND 0x8
259 #define I915_NEW_CLIP 0x10
260 #define I915_NEW_SCISSOR 0x20
261 #define I915_NEW_STIPPLE 0x40
262 #define I915_NEW_FRAMEBUFFER 0x80
263 #define I915_NEW_ALPHA_TEST 0x100
264 #define I915_NEW_DEPTH_STENCIL 0x200
265 #define I915_NEW_SAMPLER 0x400
266 #define I915_NEW_TEXTURE 0x800
267 #define I915_NEW_CONSTANTS 0x1000
268 #define I915_NEW_VBO 0x2000
269 #define I915_NEW_VS 0x4000
272 /* Driver's internally generated state flags:
274 #define I915_NEW_VERTEX_FORMAT 0x10000
277 /* Dirty flags for hardware emit
279 #define I915_HW_STATIC (1<<I915_CACHE_STATIC)
280 #define I915_HW_DYNAMIC (1<<I915_CACHE_DYNAMIC)
281 #define I915_HW_SAMPLER (1<<I915_CACHE_SAMPLER)
282 #define I915_HW_MAP (1<<I915_CACHE_MAP)
283 #define I915_HW_PROGRAM (1<<I915_CACHE_PROGRAM)
284 #define I915_HW_CONSTANTS (1<<I915_CACHE_CONSTANTS)
285 #define I915_HW_IMMEDIATE (1<<(I915_MAX_CACHE+0))
286 #define I915_HW_INVARIENT (1<<(I915_MAX_CACHE+1))
289 /***********************************************************************
292 struct draw_stage
*i915_draw_render_stage( struct i915_context
*i915
);
295 /***********************************************************************
298 struct draw_stage
*i915_draw_vbuf_stage( struct i915_context
*i915
);
301 /***********************************************************************
304 void i915_emit_hardware_state(struct i915_context
*i915
);
308 /***********************************************************************
311 void i915_clear(struct pipe_context
*pipe
, struct pipe_surface
*ps
,
312 unsigned clearValue
);
315 /***********************************************************************
318 void i915_init_surface_functions( struct i915_context
*i915
);
320 void i915_init_state_functions( struct i915_context
*i915
);
321 void i915_init_flush_functions( struct i915_context
*i915
);
322 void i915_init_string_functions( struct i915_context
*i915
);
327 /***********************************************************************
328 * Inline conversion functions. These are better-typed than the
329 * macros used previously:
331 static INLINE
struct i915_context
*
332 i915_context( struct pipe_context
*pipe
)
334 return (struct i915_context
*)pipe
;