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/tgsi_scan.h"
43 struct intel_batchbuffer
;
46 #define I915_TEX_UNITS 8
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
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
75 /* These must mach the order of LI0_STATE_* bits, as they will be used
76 * to generate hardware packets:
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
86 #define I915_MAX_CONSTANT 32
89 /** See constant_flags[] below */
90 #define I915_CONSTFLAG_USER 0x1f
94 * Subclass of pipe_shader_state
96 struct i915_fragment_shader
98 struct pipe_shader_state state
;
100 struct tgsi_shader_info info
;
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.
115 float constants
[I915_MAX_CONSTANT
][4];
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.
123 ubyte constant_flags
[I915_MAX_CONSTANT
];
127 struct i915_cache_context
;
129 /* Use to calculate differences between state emitted to hardware and
130 * current driver-calculated state.
134 unsigned immediate
[I915_MAX_IMMEDIATE
];
135 unsigned dynamic
[I915_MAX_DYNAMIC
];
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
];
141 /* texture sampler state */
142 unsigned sampler
[I915_TEX_UNITS
][3];
143 unsigned sampler_enable_flags
;
144 unsigned sampler_enable_nr
;
146 /* texture image buffers */
147 unsigned texbuffer
[I915_TEX_UNITS
][2];
149 /** Describes the current hardware vertex layout */
150 struct vertex_info vertex_info
;
152 unsigned id
; /* track lost context events */
155 struct i915_blend_state
{
162 struct i915_depth_stencil_state
{
163 unsigned stencil_modes4
;
165 unsigned stencil_LIS5
;
169 struct i915_rasterizer_state
{
170 unsigned light_twoside
: 1;
172 enum interp_mode color_interp
;
178 const struct pipe_rasterizer_state
*templ
;
180 union { float f
; unsigned u
; } ds
[2];
183 struct i915_sampler_state
{
185 const struct pipe_sampler_state
*templ
;
190 #define I915_MAX_TEXTURE_2D_LEVELS 11 /* max 1024x1024 */
191 #define I915_MAX_TEXTURE_3D_LEVELS 8 /* max 128x128x128 */
193 struct i915_texture
{
194 struct pipe_texture base
;
196 /* Derived from the above:
199 unsigned depth_stride
; /* per-image on i945? */
200 unsigned total_nblocksy
;
202 unsigned sw_tiled
; /**< tiled with software flags */
203 unsigned hw_tiled
; /**< tiled with hardware fences */
205 unsigned nr_images
[I915_MAX_TEXTURE_2D_LEVELS
];
207 /* Explicitly store the offset of each image for each cube face or
208 * depth value. Pretty much have to accept that hardware formats
209 * are going to be so diverse that there is no unified way to
210 * compute the offsets of depth/cube images within a mipmap level,
211 * so have to store them as a lookup table:
213 unsigned *image_offset
[I915_MAX_TEXTURE_2D_LEVELS
]; /**< array [depth] of offsets */
215 /* The data is held here:
217 struct intel_buffer
*buffer
;
222 struct pipe_context base
;
224 struct intel_winsys
*iws
;
226 struct draw_context
*draw
;
228 /* The most recent drawing state as set by the driver:
230 const struct i915_blend_state
*blend
;
231 const struct i915_sampler_state
*sampler
[PIPE_MAX_SAMPLERS
];
232 const struct i915_depth_stencil_state
*depth_stencil
;
233 const struct i915_rasterizer_state
*rasterizer
;
235 struct i915_fragment_shader
*fs
;
237 struct pipe_blend_color blend_color
;
238 struct pipe_stencil_ref stencil_ref
;
239 struct pipe_clip_state clip
;
241 struct pipe_buffer
*constants
[PIPE_SHADER_TYPES
];
242 struct pipe_framebuffer_state framebuffer
;
243 struct pipe_poly_stipple poly_stipple
;
244 struct pipe_scissor_state scissor
;
245 struct i915_texture
*texture
[PIPE_MAX_SAMPLERS
];
246 struct pipe_viewport_state viewport
;
247 struct pipe_vertex_buffer vertex_buffer
[PIPE_MAX_ATTRIBS
];
251 unsigned num_samplers
;
252 unsigned num_textures
;
253 unsigned num_vertex_elements
;
254 unsigned num_vertex_buffers
;
256 struct intel_batchbuffer
*batch
;
259 struct intel_buffer
*vbo
;
261 unsigned vbo_flushed
;
263 struct i915_state current
;
264 unsigned hardware_dirty
;
269 /* A flag for each state_tracker state object:
271 #define I915_NEW_VIEWPORT 0x1
272 #define I915_NEW_RASTERIZER 0x2
273 #define I915_NEW_FS 0x4
274 #define I915_NEW_BLEND 0x8
275 #define I915_NEW_CLIP 0x10
276 #define I915_NEW_SCISSOR 0x20
277 #define I915_NEW_STIPPLE 0x40
278 #define I915_NEW_FRAMEBUFFER 0x80
279 #define I915_NEW_ALPHA_TEST 0x100
280 #define I915_NEW_DEPTH_STENCIL 0x200
281 #define I915_NEW_SAMPLER 0x400
282 #define I915_NEW_TEXTURE 0x800
283 #define I915_NEW_CONSTANTS 0x1000
284 #define I915_NEW_VBO 0x2000
285 #define I915_NEW_VS 0x4000
288 /* Driver's internally generated state flags:
290 #define I915_NEW_VERTEX_FORMAT 0x10000
293 /* Dirty flags for hardware emit
295 #define I915_HW_STATIC (1<<I915_CACHE_STATIC)
296 #define I915_HW_DYNAMIC (1<<I915_CACHE_DYNAMIC)
297 #define I915_HW_SAMPLER (1<<I915_CACHE_SAMPLER)
298 #define I915_HW_MAP (1<<I915_CACHE_MAP)
299 #define I915_HW_PROGRAM (1<<I915_CACHE_PROGRAM)
300 #define I915_HW_CONSTANTS (1<<I915_CACHE_CONSTANTS)
301 #define I915_HW_IMMEDIATE (1<<(I915_MAX_CACHE+0))
302 #define I915_HW_INVARIENT (1<<(I915_MAX_CACHE+1))
305 /***********************************************************************
308 struct draw_stage
*i915_draw_render_stage( struct i915_context
*i915
);
311 /***********************************************************************
314 struct draw_stage
*i915_draw_vbuf_stage( struct i915_context
*i915
);
317 /***********************************************************************
320 void i915_emit_hardware_state(struct i915_context
*i915
);
324 /***********************************************************************
327 void i915_clear( struct pipe_context
*pipe
, unsigned buffers
, const float *rgba
,
328 double depth
, unsigned stencil
);
331 /***********************************************************************
334 void i915_init_surface_functions( struct i915_context
*i915
);
336 void i915_init_state_functions( struct i915_context
*i915
);
337 void i915_init_flush_functions( struct i915_context
*i915
);
338 void i915_init_string_functions( struct i915_context
*i915
);
341 /************************************************************************
344 struct pipe_context
*i915_create_context(struct pipe_screen
*screen
,
348 /***********************************************************************
349 * Inline conversion functions. These are better-typed than the
350 * macros used previously:
352 static INLINE
struct i915_context
*
353 i915_context( struct pipe_context
*pipe
)
355 return (struct i915_context
*)pipe
;