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"
42 struct i915_winsys_buffer;
43 struct i915_winsys_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 struct i915_velems_state {
192 struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
198 struct pipe_context base;
200 struct i915_winsys *iws;
202 struct draw_context *draw;
204 /* The most recent drawing state as set by the driver:
206 const struct i915_blend_state *blend;
207 const struct i915_sampler_state *sampler[PIPE_MAX_SAMPLERS];
208 const struct i915_depth_stencil_state *depth_stencil;
209 const struct i915_rasterizer_state *rasterizer;
211 struct i915_fragment_shader *fs;
213 struct pipe_blend_color blend_color;
214 struct pipe_stencil_ref stencil_ref;
215 struct pipe_clip_state clip;
217 struct pipe_resource *constants[PIPE_SHADER_TYPES];
218 struct pipe_framebuffer_state framebuffer;
219 struct pipe_poly_stipple poly_stipple;
220 struct pipe_scissor_state scissor;
221 struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
222 struct pipe_viewport_state viewport;
223 struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
227 unsigned num_samplers;
228 unsigned num_fragment_sampler_views;
229 unsigned num_vertex_buffers;
231 struct i915_winsys_batchbuffer *batch;
234 struct i915_winsys_buffer *vbo;
236 unsigned vbo_flushed;
238 struct i915_state current;
239 unsigned hardware_dirty;
242 /* A flag for each state_tracker state object:
244 #define I915_NEW_VIEWPORT 0x1
245 #define I915_NEW_RASTERIZER 0x2
246 #define I915_NEW_FS 0x4
247 #define I915_NEW_BLEND 0x8
248 #define I915_NEW_CLIP 0x10
249 #define I915_NEW_SCISSOR 0x20
250 #define I915_NEW_STIPPLE 0x40
251 #define I915_NEW_FRAMEBUFFER 0x80
252 #define I915_NEW_ALPHA_TEST 0x100
253 #define I915_NEW_DEPTH_STENCIL 0x200
254 #define I915_NEW_SAMPLER 0x400
255 #define I915_NEW_SAMPLER_VIEW 0x800
256 #define I915_NEW_CONSTANTS 0x1000
257 #define I915_NEW_VBO 0x2000
258 #define I915_NEW_VS 0x4000
261 /* Driver's internally generated state flags:
263 #define I915_NEW_VERTEX_FORMAT 0x10000
266 /* Dirty flags for hardware emit
268 #define I915_HW_STATIC (1<<I915_CACHE_STATIC)
269 #define I915_HW_DYNAMIC (1<<I915_CACHE_DYNAMIC)
270 #define I915_HW_SAMPLER (1<<I915_CACHE_SAMPLER)
271 #define I915_HW_MAP (1<<I915_CACHE_MAP)
272 #define I915_HW_PROGRAM (1<<I915_CACHE_PROGRAM)
273 #define I915_HW_CONSTANTS (1<<I915_CACHE_CONSTANTS)
274 #define I915_HW_IMMEDIATE (1<<(I915_MAX_CACHE+0))
275 #define I915_HW_INVARIENT (1<<(I915_MAX_CACHE+1))
278 /***********************************************************************
281 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
284 /***********************************************************************
287 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
290 /***********************************************************************
293 void i915_emit_hardware_state(struct i915_context *i915 );
297 /***********************************************************************
300 void i915_clear( struct pipe_context *pipe, unsigned buffers, const float *rgba,
301 double depth, unsigned stencil);
304 /***********************************************************************
307 void i915_init_state_functions( struct i915_context *i915 );
308 void i915_init_flush_functions( struct i915_context *i915 );
309 void i915_init_string_functions( struct i915_context *i915 );
312 /************************************************************************
315 struct pipe_context *i915_create_context(struct pipe_screen *screen,
319 /***********************************************************************
320 * Inline conversion functions. These are better-typed than the
321 * macros used previously:
323 static INLINE struct i915_context *
324 i915_context( struct pipe_context *pipe )
326 return (struct i915_context *)pipe;