aboutsummaryrefslogtreecommitdiffstats
path: root/src/mesa/state_tracker/st_context.h
blob: a4f56eac7f84c523f65446547cd4739b1d855f87 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
/**************************************************************************
 * 
 * Copyright 2003 VMware, Inc.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#ifndef ST_CONTEXT_H
#define ST_CONTEXT_H

#include "main/mtypes.h"
#include "pipe/p_state.h"
#include "state_tracker/st_api.h"
#include "main/fbobject.h"


#ifdef __cplusplus
extern "C" {
#endif


struct bitmap_cache;
struct dd_function_table;
struct draw_context;
struct draw_stage;
struct gen_mipmap_state;
struct st_context;
struct st_fragment_program;
struct st_perf_monitor_group;
struct u_upload_mgr;


/* gap  */
#define ST_NEW_FRAGMENT_PROGRAM        (1 << 1)
#define ST_NEW_VERTEX_PROGRAM          (1 << 2)
#define ST_NEW_FRAMEBUFFER             (1 << 3)
#define ST_NEW_TESS_STATE              (1 << 4)
#define ST_NEW_GEOMETRY_PROGRAM        (1 << 5)
#define ST_NEW_VERTEX_ARRAYS           (1 << 6)
#define ST_NEW_RASTERIZER              (1 << 7)
#define ST_NEW_UNIFORM_BUFFER          (1 << 8)
#define ST_NEW_TESSCTRL_PROGRAM        (1 << 9)
#define ST_NEW_TESSEVAL_PROGRAM        (1 << 10)
#define ST_NEW_SAMPLER_VIEWS           (1 << 11)
#define ST_NEW_ATOMIC_BUFFER           (1 << 12)
#define ST_NEW_STORAGE_BUFFER          (1 << 13)
#define ST_NEW_COMPUTE_PROGRAM         (1 << 14)
#define ST_NEW_IMAGE_UNITS             (1 << 15)


struct st_state_flags {
   GLbitfield mesa;  /**< Mask of _NEW_x flags */
   uint64_t st;      /**< Mask of ST_NEW_x flags */
};

struct st_tracked_state {
   const char *name;
   struct st_state_flags dirty;
   void (*update)( struct st_context *st );
};


/**
 * Enumeration of state tracker pipelines.
 */
enum st_pipeline {
   ST_PIPELINE_RENDER,
   ST_PIPELINE_COMPUTE,
};


/** For drawing quads for glClear, glDraw/CopyPixels, glBitmap, etc. */
struct st_util_vertex
{
   float x, y, z;
   float r, g, b, a;
   float s, t;
};


struct st_context
{
   struct st_context_iface iface;

   struct gl_context *ctx;

   struct pipe_context *pipe;

   struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;

   struct draw_context *draw;  /**< For selection/feedback/rastpos only */
   struct draw_stage *feedback_stage;  /**< For GL_FEEDBACK rendermode */
   struct draw_stage *selection_stage;  /**< For GL_SELECT rendermode */
   struct draw_stage *rastpos_stage;  /**< For glRasterPos */
   GLboolean clamp_frag_color_in_shader;
   GLboolean clamp_vert_color_in_shader;
   boolean has_stencil_export; /**< can do shader stencil export? */
   boolean has_time_elapsed;
   boolean has_shader_model3;
   boolean has_etc1;
   boolean has_etc2;
   boolean prefer_blit_based_texture_transfer;
   boolean force_persample_in_shader;
   boolean has_shareable_shaders;
   boolean has_half_float_packing;
   boolean has_multi_draw_indirect;

   /**
    * If a shader can be created when we get its source.
    * This means it has only 1 variant, not counting glBitmap and
    * glDrawPixels.
    */
   boolean shader_has_one_variant[MESA_SHADER_STAGES];

   boolean needs_texcoord_semantic;
   boolean apply_texture_swizzle_to_border_color;

   /* On old libGL's for linux we need to invalidate the drawables
    * on glViewpport calls, this is set via a option.
    */
   boolean invalidate_on_gl_viewport;

   boolean vertex_array_out_of_memory;

   /* Some state is contained in constant objects.
    * Other state is just parameter values.
    */
   struct {
      struct pipe_blend_state               blend;
      struct pipe_depth_stencil_alpha_state depth_stencil;
      struct pipe_rasterizer_state          rasterizer;
      struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
      GLuint num_samplers[PIPE_SHADER_TYPES];
      struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
      GLuint num_sampler_views[PIPE_SHADER_TYPES];
      struct pipe_clip_state clip;
      struct {
         void *ptr;
         unsigned size;
      } constants[PIPE_SHADER_TYPES];
      struct pipe_framebuffer_state framebuffer;
      struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
      struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS];
      unsigned sample_mask;

      GLuint poly_stipple[32];  /**< In OpenGL's bottom-to-top order */

      GLuint fb_orientation;
   } state;

   char vendor[100];
   char renderer[100];

   struct st_state_flags dirty;
   struct st_state_flags dirty_cp;

   GLboolean vertdata_edgeflags;
   GLboolean edgeflag_culls_prims;

   /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
   const GLuint *vertex_result_to_slot;

   struct st_vertex_program *vp;    /**< Currently bound vertex program */
   struct st_fragment_program *fp;  /**< Currently bound fragment program */
   struct st_geometry_program *gp;  /**< Currently bound geometry program */
   struct st_tessctrl_program *tcp; /**< Currently bound tess control program */
   struct st_tesseval_program *tep; /**< Currently bound tess eval program */
   struct st_compute_program *cp;   /**< Currently bound compute program */

   struct st_vp_variant *vp_variant;
   struct st_fp_variant *fp_variant;
   struct st_basic_variant *gp_variant;
   struct st_basic_variant *tcp_variant;
   struct st_basic_variant *tep_variant;
   struct st_basic_variant *cp_variant;

   struct {
      struct pipe_resource *pixelmap_texture;
      struct pipe_sampler_view *pixelmap_sampler_view;
   } pixel_xfer;

   /** for glBitmap */
   struct {
      struct pipe_rasterizer_state rasterizer;
      struct pipe_sampler_state sampler;
      struct pipe_sampler_state atlas_sampler;
      enum pipe_format tex_format;
      void *vs;
      struct bitmap_cache *cache;
   } bitmap;

   /** for glDraw/CopyPixels */
   struct {
      void *zs_shaders[4];
      void *vert_shaders[2];   /**< ureg shaders */
   } drawpix;

   struct {
      GLsizei width, height;
      GLenum format, type;
      const void *user_pointer;  /**< Last user 'pixels' pointer */
      void *image;               /**< Copy of the glDrawPixels image data */
      struct pipe_resource *texture;
   } drawpix_cache;

   /** for glClear */
   struct {
      struct pipe_rasterizer_state raster;
      struct pipe_viewport_state viewport;
      void *vs;
      void *fs;
      void *vs_layered;
      void *gs_layered;
   } clear;

   /* For gl(Compressed)Tex(Sub)Image */
   struct {
      struct pipe_rasterizer_state raster;
      struct pipe_blend_state upload_blend;
      void *vs;
      void *gs;
      void *upload_fs;
      void *download_fs[PIPE_MAX_TEXTURE_TYPES];
      bool upload_enabled;
      bool download_enabled;
      bool rgba_only;
      bool layers;
      bool use_gs;
   } pbo;

   /** for drawing with st_util_vertex */
   struct pipe_vertex_element util_velems[3];

   void *passthrough_fs;  /**< simple pass-through frag shader */

   enum pipe_texture_target internal_target;

   struct cso_context *cso_context;

   void *winsys_drawable_handle;

   /* The number of vertex buffers from the last call of validate_arrays. */
   unsigned last_num_vbuffers;

   int32_t draw_stamp;
   int32_t read_stamp;

   struct st_config_options options;

   struct st_perf_monitor_group *perfmon;
};


/* Need this so that we can implement Mesa callbacks in this module.
 */
static inline struct st_context *st_context(struct gl_context *ctx)
{
   return ctx->st;
}


/**
 * Wrapper for struct gl_framebuffer.
 * This is an opaque type to the outside world.
 */
struct st_framebuffer
{
   struct gl_framebuffer Base;
   void *Private;

   struct st_framebuffer_iface *iface;
   enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
   unsigned num_statts;
   int32_t stamp;
   int32_t iface_stamp;
};


extern void st_init_driver_functions(struct pipe_screen *screen,
                                     struct dd_function_table *functions);

void st_invalidate_state(struct gl_context * ctx, GLbitfield new_state);



#define Y_0_TOP 1
#define Y_0_BOTTOM 2

static inline GLuint
st_fb_orientation(const struct gl_framebuffer *fb)
{
   if (fb && _mesa_is_winsys_fbo(fb)) {
      /* Drawing into a window (on-screen buffer).
       *
       * Negate Y scale to flip image vertically.
       * The NDC Y coords prior to viewport transformation are in the range
       * [y=-1=bottom, y=1=top]
       * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
       * H is the window height.
       * Use the viewport transformation to invert Y.
       */
      return Y_0_TOP;
   }
   else {
      /* Drawing into user-created FBO (very likely a texture).
       *
       * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
       */
      return Y_0_BOTTOM;
   }
}


static inline unsigned
st_shader_stage_to_ptarget(gl_shader_stage stage)
{
   switch (stage) {
   case MESA_SHADER_VERTEX:
      return PIPE_SHADER_VERTEX;
   case MESA_SHADER_FRAGMENT:
      return PIPE_SHADER_FRAGMENT;
   case MESA_SHADER_GEOMETRY:
      return PIPE_SHADER_GEOMETRY;
   case MESA_SHADER_TESS_CTRL:
      return PIPE_SHADER_TESS_CTRL;
   case MESA_SHADER_TESS_EVAL:
      return PIPE_SHADER_TESS_EVAL;
   case MESA_SHADER_COMPUTE:
      return PIPE_SHADER_COMPUTE;
   }

   assert(!"should not be reached");
   return PIPE_SHADER_VERTEX;
}


/** clear-alloc a struct-sized object, with casting */
#define ST_CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))


extern struct st_context *
st_create_context(gl_api api, struct pipe_context *pipe,
                  const struct gl_config *visual,
                  struct st_context *share,
                  const struct st_config_options *options);

extern void
st_destroy_context(struct st_context *st);


#ifdef __cplusplus
}
#endif

#endif