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"
40 #include "util/u_slab.h"
41 #include "util/u_blitter.h"
45 struct i915_winsys_buffer
;
46 struct i915_winsys_batchbuffer
;
49 #define I915_TEX_UNITS 8
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
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
78 /* These must mach the order of LI0_STATE_* bits, as they will be used
79 * to generate hardware packets:
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
89 #define I915_MAX_CONSTANT 32
92 /** See constant_flags[] below */
93 #define I915_CONSTFLAG_USER 0x1f
97 * Subclass of pipe_shader_state
99 struct i915_fragment_shader
101 struct pipe_shader_state state
;
103 struct tgsi_shader_info info
;
109 * constants introduced during translation.
110 * These are placed at the end of the constant buffer and grow toward
111 * the beginning (eg: slot 31, 30 29, ...)
112 * User-provided constants start at 0.
113 * This allows both types of constants to co-exist (until there's too many)
114 * and doesn't require regenerating/changing the fragment program to
115 * shuffle constants around.
118 float constants
[I915_MAX_CONSTANT
][4];
121 * Status of each constant
122 * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
123 * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
124 * Else, the bitmask indicates which components are occupied by immediates.
126 ubyte constant_flags
[I915_MAX_CONSTANT
];
130 struct i915_cache_context
;
132 /* Use to calculate differences between state emitted to hardware and
133 * current driver-calculated state.
137 unsigned immediate
[I915_MAX_IMMEDIATE
];
138 unsigned dynamic
[I915_MAX_DYNAMIC
];
140 /** number of constants passed in through a constant buffer */
141 uint num_user_constants
[PIPE_SHADER_TYPES
];
143 /* texture sampler state */
144 unsigned sampler
[I915_TEX_UNITS
][3];
145 unsigned sampler_enable_flags
;
146 unsigned sampler_enable_nr
;
148 /* texture image buffers */
149 unsigned texbuffer
[I915_TEX_UNITS
][2];
151 /** Describes the current hardware vertex layout */
152 struct vertex_info vertex_info
;
154 /* static state (dst/depth buffer state) */
155 struct i915_winsys_buffer
*cbuf_bo
;
157 struct i915_winsys_buffer
*depth_bo
;
158 unsigned depth_flags
;
159 unsigned dst_buf_vars
;
160 uint32_t draw_offset
;
163 uint16_t fb_height
, fb_width
;
165 unsigned id
; /* track lost context events */
168 struct i915_blend_state
{
175 struct i915_depth_stencil_state
{
176 unsigned stencil_modes4
;
178 unsigned stencil_LIS5
;
182 struct i915_rasterizer_state
{
183 unsigned light_twoside
: 1;
185 enum interp_mode color_interp
;
191 struct pipe_rasterizer_state templ
;
193 union { float f
; unsigned u
; } ds
[2];
196 struct i915_sampler_state
{
198 const struct pipe_sampler_state
*templ
;
203 struct i915_velems_state
{
205 struct pipe_vertex_element velem
[PIPE_MAX_ATTRIBS
];
209 struct i915_context
{
210 struct pipe_context base
;
212 struct i915_winsys
*iws
;
214 struct draw_context
*draw
;
216 /* The most recent drawing state as set by the driver:
218 const struct i915_blend_state
*blend
;
219 const struct i915_sampler_state
*sampler
[PIPE_MAX_SAMPLERS
];
220 const struct i915_depth_stencil_state
*depth_stencil
;
221 const struct i915_rasterizer_state
*rasterizer
;
223 struct i915_fragment_shader
*fs
;
225 struct pipe_blend_color blend_color
;
226 struct pipe_stencil_ref stencil_ref
;
227 struct pipe_clip_state clip
;
228 struct pipe_resource
*constants
[PIPE_SHADER_TYPES
];
229 struct pipe_framebuffer_state framebuffer
;
230 struct pipe_poly_stipple poly_stipple
;
231 struct pipe_scissor_state scissor
;
232 struct pipe_sampler_view
*fragment_sampler_views
[PIPE_MAX_SAMPLERS
];
233 struct pipe_viewport_state viewport
;
234 struct pipe_index_buffer index_buffer
;
238 unsigned num_samplers
;
239 unsigned num_fragment_sampler_views
;
241 struct i915_winsys_batchbuffer
*batch
;
243 struct blitter_context
* blitter
;
246 struct i915_winsys_buffer
*vbo
;
248 unsigned vbo_flushed
;
250 struct i915_state current
;
251 unsigned hardware_dirty
;
252 unsigned immediate_dirty
;
253 unsigned dynamic_dirty
;
254 unsigned flush_dirty
;
256 struct i915_winsys_buffer
*validation_buffers
[2 + 1 + I915_TEX_UNITS
];
257 int num_validation_buffers
;
259 struct util_slab_mempool transfer_pool
;
262 /* A flag for each state_tracker state object:
264 #define I915_NEW_VIEWPORT 0x1
265 #define I915_NEW_RASTERIZER 0x2
266 #define I915_NEW_FS 0x4
267 #define I915_NEW_BLEND 0x8
268 #define I915_NEW_CLIP 0x10
269 #define I915_NEW_SCISSOR 0x20
270 #define I915_NEW_STIPPLE 0x40
271 #define I915_NEW_FRAMEBUFFER 0x80
272 #define I915_NEW_ALPHA_TEST 0x100
273 #define I915_NEW_DEPTH_STENCIL 0x200
274 #define I915_NEW_SAMPLER 0x400
275 #define I915_NEW_SAMPLER_VIEW 0x800
276 #define I915_NEW_VS_CONSTANTS 0x1000
277 #define I915_NEW_FS_CONSTANTS 0x2000
278 #define I915_NEW_GS_CONSTANTS 0x4000
279 #define I915_NEW_VBO 0x8000
280 #define I915_NEW_VS 0x10000
283 /* Driver's internally generated state flags:
285 #define I915_NEW_VERTEX_FORMAT 0x10000
288 /* Dirty flags for hardware emit
290 #define I915_HW_STATIC (1<<I915_CACHE_STATIC)
291 #define I915_HW_DYNAMIC (1<<I915_CACHE_DYNAMIC)
292 #define I915_HW_SAMPLER (1<<I915_CACHE_SAMPLER)
293 #define I915_HW_MAP (1<<I915_CACHE_MAP)
294 #define I915_HW_PROGRAM (1<<I915_CACHE_PROGRAM)
295 #define I915_HW_CONSTANTS (1<<I915_CACHE_CONSTANTS)
296 #define I915_HW_IMMEDIATE (1<<(I915_MAX_CACHE+0))
297 #define I915_HW_INVARIANT (1<<(I915_MAX_CACHE+1))
298 #define I915_HW_FLUSH (1<<(I915_MAX_CACHE+1))
300 /* hw flush handling */
301 #define I915_FLUSH_CACHE 1
302 #define I915_PIPELINE_FLUSH 2
305 void i915_set_flush_dirty(struct i915_context
*i915
, unsigned flush
)
307 i915
->hardware_dirty
|= I915_HW_FLUSH
;
308 i915
->flush_dirty
|= flush
;
312 /***********************************************************************
315 struct draw_stage
*i915_draw_render_stage( struct i915_context
*i915
);
318 /***********************************************************************
321 struct draw_stage
*i915_draw_vbuf_stage( struct i915_context
*i915
);
324 /***********************************************************************
327 void i915_emit_hardware_state(struct i915_context
*i915
);
331 /***********************************************************************
334 void i915_clear_blitter(struct pipe_context
*pipe
, unsigned buffers
, const float *rgba
,
335 double depth
, unsigned stencil
);
336 void i915_clear_render(struct pipe_context
*pipe
, unsigned buffers
, const float *rgba
,
337 double depth
, unsigned stencil
);
338 void i915_clear_emit(struct pipe_context
*pipe
, unsigned buffers
, const float *rgba
,
339 double depth
, unsigned stencil
,
340 unsigned destx
, unsigned desty
, unsigned width
, unsigned height
);
343 /***********************************************************************
346 void i915_init_state_functions( struct i915_context
*i915
);
347 void i915_init_flush_functions( struct i915_context
*i915
);
348 void i915_init_string_functions( struct i915_context
*i915
);
351 /************************************************************************
354 struct pipe_context
*i915_create_context(struct pipe_screen
*screen
,
358 /***********************************************************************
359 * Inline conversion functions. These are better-typed than the
360 * macros used previously:
362 static INLINE
struct i915_context
*
363 i915_context( struct pipe_context
*pipe
)
365 return (struct i915_context
*)pipe
;