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1  /**************************************************************************
2  *
3  * Copyright 2003 VMware, Inc.
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 VMWARE 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 I915CONTEXT_INC
29 #define I915CONTEXT_INC
30 
31 #include "intel_context.h"
32 
33 #define I915_FALLBACK_TEXTURE		 0x1000
34 #define I915_FALLBACK_COLORMASK		 0x2000
35 #define I915_FALLBACK_STENCIL		 0x4000
36 #define I915_FALLBACK_STIPPLE		 0x8000
37 #define I915_FALLBACK_PROGRAM		 0x10000
38 #define I915_FALLBACK_LOGICOP		 0x20000
39 #define I915_FALLBACK_POLYGON_SMOOTH	 0x40000
40 #define I915_FALLBACK_POINT_SMOOTH	 0x80000
41 #define I915_FALLBACK_POINT_SPRITE_COORD_ORIGIN	 0x100000
42 #define I915_FALLBACK_DRAW_OFFSET	 0x200000
43 #define I915_FALLBACK_COORD_REPLACE	 0x400000
44 
45 #define I915_UPLOAD_CTX              0x1
46 #define I915_UPLOAD_BUFFERS          0x2
47 #define I915_UPLOAD_STIPPLE          0x4
48 #define I915_UPLOAD_PROGRAM          0x8
49 #define I915_UPLOAD_CONSTANTS        0x10
50 #define I915_UPLOAD_INVARIENT        0x40
51 #define I915_UPLOAD_DEFAULTS         0x80
52 #define I915_UPLOAD_RASTER_RULES     0x100
53 #define I915_UPLOAD_BLEND            0x200
54 #define I915_UPLOAD_TEX(i)           (0x00010000<<(i))
55 #define I915_UPLOAD_TEX_ALL          (0x00ff0000)
56 #define I915_UPLOAD_TEX_0_SHIFT      16
57 
58 
59 /* State structure offsets - these will probably disappear.
60  */
61 #define I915_DESTREG_CBUFADDR0 0
62 #define I915_DESTREG_CBUFADDR1 1
63 #define I915_DESTREG_DBUFADDR0 3
64 #define I915_DESTREG_DBUFADDR1 4
65 #define I915_DESTREG_DV0 6
66 #define I915_DESTREG_DV1 7
67 #define I915_DESTREG_SR0 8
68 #define I915_DESTREG_SR1 9
69 #define I915_DESTREG_SR2 10
70 #define I915_DESTREG_SENABLE 11
71 #define I915_DESTREG_DRAWRECT0 12
72 #define I915_DESTREG_DRAWRECT1 13
73 #define I915_DESTREG_DRAWRECT2 14
74 #define I915_DESTREG_DRAWRECT3 15
75 #define I915_DESTREG_DRAWRECT4 16
76 #define I915_DESTREG_DRAWRECT5 17
77 #define I915_DEST_SETUP_SIZE 18
78 
79 #define I915_CTXREG_STATE4		0
80 #define I915_CTXREG_LI			1
81 #define I915_CTXREG_LIS2		2
82 #define I915_CTXREG_LIS3		3
83 #define I915_CTXREG_LIS4		4
84 #define I915_CTXREG_LIS5		5
85 #define I915_CTXREG_LIS6		6
86 #define I915_CTXREG_BF_STENCIL_OPS	7
87 #define I915_CTXREG_BF_STENCIL_MASKS	8
88 #define I915_CTX_SETUP_SIZE		9
89 
90 #define I915_BLENDREG_IAB		0
91 #define I915_BLENDREG_BLENDCOLOR0	1
92 #define I915_BLENDREG_BLENDCOLOR1	2
93 #define I915_BLEND_SETUP_SIZE		3
94 
95 #define I915_STPREG_ST0        0
96 #define I915_STPREG_ST1        1
97 #define I915_STP_SETUP_SIZE    2
98 
99 #define I915_TEXREG_MS3        1
100 #define I915_TEXREG_MS4        2
101 #define I915_TEXREG_SS2        3
102 #define I915_TEXREG_SS3        4
103 #define I915_TEXREG_SS4        5
104 #define I915_TEX_SETUP_SIZE    6
105 
106 #define I915_DEFREG_C0    0
107 #define I915_DEFREG_C1    1
108 #define I915_DEFREG_S0    2
109 #define I915_DEFREG_S1    3
110 #define I915_DEFREG_Z0    4
111 #define I915_DEFREG_Z1    5
112 #define I915_DEF_SETUP_SIZE    6
113 
114 enum {
115    I915_RASTER_RULES,
116    I915_RASTER_RULES_SETUP_SIZE,
117 };
118 
119 #define I915_TEX_UNITS 8
120 #define I915_WPOS_TEX_INVALID 0xff
121 
122 #define I915_MAX_CONSTANT      32
123 #define I915_CONSTANT_SIZE     (2+(4*I915_MAX_CONSTANT))
124 
125 #define I915_MAX_TEX_INDIRECT 4
126 #define I915_MAX_TEX_INSN     32
127 #define I915_MAX_ALU_INSN     64
128 #define I915_MAX_DECL_INSN    27
129 #define I915_MAX_TEMPORARY    16
130 
131 #define I915_MAX_INSN          (I915_MAX_DECL_INSN + \
132 				I915_MAX_TEX_INSN + \
133 				I915_MAX_ALU_INSN)
134 
135 /* Maximum size of the program packet, which matches the limits on
136  * decl, tex, and ALU instructions.
137  */
138 #define I915_PROGRAM_SIZE      (I915_MAX_INSN * 3 + 1)
139 
140 /* Hardware version of a parsed fragment program.  "Derived" from the
141  * mesa fragment_program struct.
142  */
143 struct i915_fragment_program
144 {
145    struct gl_program FragProg;
146 
147    bool translated;
148    bool params_uptodate;
149    bool on_hardware;
150    bool error;             /* If program is malformed for any reason. */
151 
152    /** Record of which phases R registers were last written in. */
153    GLuint register_phases[16];
154    GLuint indirections;
155    GLuint nr_tex_indirect;
156    GLuint nr_tex_insn;
157    GLuint nr_alu_insn;
158    GLuint nr_decl_insn;
159 
160 
161 
162 
163    /* TODO: split between the stored representation of a program and
164     * the state used to build that representation.
165     */
166    struct gl_context *ctx;
167 
168    /* declarations contains the packet header. */
169    GLuint declarations[I915_MAX_DECL_INSN * 3 + 1];
170    GLuint program[(I915_MAX_TEX_INSN + I915_MAX_ALU_INSN) * 3];
171 
172    GLfloat constant[I915_MAX_CONSTANT][4];
173    GLuint constant_flags[I915_MAX_CONSTANT];
174    GLuint nr_constants;
175 
176    GLuint *csr;                 /* Cursor, points into program.
177                                  */
178 
179    GLuint *decl;                /* Cursor, points into declarations.
180                                  */
181 
182    GLuint decl_s;               /* flags for which s regs need to be decl'd */
183    GLuint decl_t;               /* flags for which t regs need to be decl'd */
184 
185    GLuint temp_flag;            /* Tracks temporary regs which are in
186                                  * use.
187                                  */
188 
189    GLuint utemp_flag;           /* Tracks TYPE_U temporary regs which are in
190                                  * use.
191                                  */
192 
193 
194    /* Track which R registers are "live" for each instruction.
195     * A register is live between the time it's written to and the last time
196     * it's read. */
197    GLuint usedRegs[I915_MAX_INSN];
198 
199    /* Helpers for i915_fragprog.c:
200     */
201    uint8_t texcoord_mapping[I915_TEX_UNITS];
202    uint8_t wpos_tex;
203    bool depth_written;
204 
205    struct
206    {
207       GLuint reg;               /* Hardware constant idx */
208       const GLfloat *values;    /* Pointer to tracked values */
209    } param[I915_MAX_CONSTANT];
210    GLuint nr_params;
211 };
212 
213 struct i915_hw_state
214 {
215    GLuint Ctx[I915_CTX_SETUP_SIZE];
216    GLuint Blend[I915_BLEND_SETUP_SIZE];
217    GLuint Buffer[I915_DEST_SETUP_SIZE];
218    GLuint Stipple[I915_STP_SETUP_SIZE];
219    GLuint Defaults[I915_DEF_SETUP_SIZE];
220    GLuint RasterRules[I915_RASTER_RULES_SETUP_SIZE];
221    GLuint Tex[I915_TEX_UNITS][I915_TEX_SETUP_SIZE];
222    GLuint Constant[I915_CONSTANT_SIZE];
223    GLuint ConstantSize;
224    GLuint Program[I915_PROGRAM_SIZE];
225    GLuint ProgramSize;
226 
227    /* Region pointers for relocation:
228     */
229    struct intel_region *draw_region;
230    struct intel_region *depth_region;
231 /*    struct intel_region *tex_region[I915_TEX_UNITS]; */
232 
233    /* Regions aren't actually that appropriate here as the memory may
234     * be from a PBO or FBO.  Will have to do this for draw and depth for
235     * FBO's...
236     */
237    drm_intel_bo *tex_buffer[I915_TEX_UNITS];
238    GLuint tex_offset[I915_TEX_UNITS];
239 
240 
241    GLuint active;               /* I915_UPLOAD_* */
242    GLuint emitted;              /* I915_UPLOAD_* */
243 };
244 
245 struct i915_context
246 {
247    struct intel_context intel;
248 
249    GLuint lodbias_ss2[MAX_TEXTURE_UNITS];
250 
251 
252    struct i915_fragment_program *current_program;
253 
254    drm_intel_bo *current_vb_bo;
255    unsigned int current_vertex_size;
256 
257    struct i915_hw_state state;
258    uint32_t last_draw_offset;
259    GLuint last_sampler;
260 };
261 
262 
263 #define I915_STATECHANGE(i915, flag)					\
264 do {									\
265    INTEL_FIREVERTICES( &(i915)->intel );					\
266    (i915)->state.emitted &= ~(flag);					\
267 } while (0)
268 
269 #define I915_ACTIVESTATE(i915, flag, mode)			\
270 do {								\
271    INTEL_FIREVERTICES( &(i915)->intel );				\
272    if (mode)							\
273       (i915)->state.active |= (flag);				\
274    else								\
275       (i915)->state.active &= ~(flag);				\
276 } while (0)
277 
278 
279 /*======================================================================
280  * i915_vtbl.c
281  */
282 extern void i915InitVtbl(struct i915_context *i915);
283 
284 extern void
285 i915_state_draw_region(struct intel_context *intel,
286                        struct i915_hw_state *state,
287                        struct intel_region *color_region,
288                        struct intel_region *depth_region);
289 
290 
291 
292 #define SZ_TO_HW(sz)  ((sz-2)&0x3)
293 #define EMIT_SZ(sz)   (EMIT_1F + (sz) - 1)
294 #define EMIT_ATTR( ATTR, STYLE, S4, SZ )				\
295 do {									\
296    intel->vertex_attrs[intel->vertex_attr_count].attrib = (ATTR);	\
297    intel->vertex_attrs[intel->vertex_attr_count].format = (STYLE);	\
298    s4 |= S4;								\
299    intel->vertex_attr_count++;						\
300    offset += (SZ);							\
301 } while (0)
302 
303 #define EMIT_PAD( N )							\
304 do {									\
305    intel->vertex_attrs[intel->vertex_attr_count].attrib = 0;		\
306    intel->vertex_attrs[intel->vertex_attr_count].format = EMIT_PAD;	\
307    intel->vertex_attrs[intel->vertex_attr_count].offset = (N);		\
308    intel->vertex_attr_count++;						\
309    offset += (N);							\
310 } while (0)
311 
312 
313 
314 /*======================================================================
315  * i915_context.c
316  */
317 extern bool i915CreateContext(int api,
318 			      const struct gl_config * mesaVis,
319 			      __DRIcontext * driContextPriv,
320                               unsigned major_version,
321                               unsigned minor_version,
322                               uint32_t flags,
323                               unsigned *error,
324 			      void *sharedContextPrivate);
325 
326 
327 /*======================================================================
328  * i915_debug.c
329  */
330 extern void i915_disassemble_program(const GLuint * program, GLuint sz);
331 extern void i915_print_ureg(const char *msg, GLuint ureg);
332 
333 
334 /*======================================================================
335  * i915_state.c
336  */
337 extern void i915InitStateFunctions(struct dd_function_table *functions);
338 extern void i915InitState(struct i915_context *i915);
339 extern void i915_update_stencil(struct gl_context * ctx);
340 extern void i915_update_provoking_vertex(struct gl_context *ctx);
341 extern void i915_update_sprite_point_enable(struct gl_context *ctx);
342 
343 
344 /*======================================================================
345  * i915_tex.c
346  */
347 extern void i915UpdateTextureState(struct intel_context *intel);
348 extern void i915InitTextureFuncs(struct dd_function_table *functions);
349 
350 /*======================================================================
351  * i915_fragprog.c
352  */
353 extern void i915ValidateFragmentProgram(struct i915_context *i915);
354 extern void i915InitFragProgFuncs(struct dd_function_table *functions);
355 
356 /*======================================================================
357  * Inline conversion functions.  These are better-typed than the
358  * macros used previously:
359  */
360 static inline struct i915_context *
i915_context(struct gl_context * ctx)361 i915_context(struct gl_context * ctx)
362 {
363    return (struct i915_context *) ctx;
364 }
365 
366 
367 
368 #define I915_CONTEXT(ctx)	i915_context(ctx)
369 
370 
371 
372 #endif
373