Merge remote branch 'origin/master' into pipe-video
[mesa.git] / src / mesa / state_tracker / st_context.h
1 /**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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 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.
25 *
26 **************************************************************************/
27
28 #ifndef ST_CONTEXT_H
29 #define ST_CONTEXT_H
30
31 #include "main/mtypes.h"
32 #include "pipe/p_state.h"
33 #include "state_tracker/st_api.h"
34
35 struct bitmap_cache;
36 struct blit_state;
37 struct dd_function_table;
38 struct draw_context;
39 struct draw_stage;
40 struct gen_mipmap_state;
41 struct st_context;
42 struct st_fragment_program;
43
44
45 #define ST_NEW_MESA 0x1 /* Mesa state has changed */
46 #define ST_NEW_FRAGMENT_PROGRAM 0x2
47 #define ST_NEW_VERTEX_PROGRAM 0x4
48 #define ST_NEW_FRAMEBUFFER 0x8
49 #define ST_NEW_EDGEFLAGS_DATA 0x10
50 #define ST_NEW_GEOMETRY_PROGRAM 0x20
51
52
53 struct st_state_flags {
54 GLuint mesa;
55 GLuint st;
56 };
57
58 struct st_tracked_state {
59 const char *name;
60 struct st_state_flags dirty;
61 void (*update)( struct st_context *st );
62 };
63
64
65
66 struct st_context
67 {
68 struct st_context_iface iface;
69
70 struct gl_context *ctx;
71
72 struct pipe_context *pipe;
73
74 struct draw_context *draw; /**< For selection/feedback/rastpos only */
75 struct draw_stage *feedback_stage; /**< For GL_FEEDBACK rendermode */
76 struct draw_stage *selection_stage; /**< For GL_SELECT rendermode */
77 struct draw_stage *rastpos_stage; /**< For glRasterPos */
78
79
80 /* On old libGL's for linux we need to invalidate the drawables
81 * on glViewpport calls, this is set via a option.
82 */
83 boolean invalidate_on_gl_viewport;
84
85 /* Some state is contained in constant objects.
86 * Other state is just parameter values.
87 */
88 struct {
89 struct pipe_blend_state blend;
90 struct pipe_depth_stencil_alpha_state depth_stencil;
91 struct pipe_rasterizer_state rasterizer;
92 struct pipe_sampler_state samplers[PIPE_MAX_SAMPLERS];
93 struct pipe_sampler_state *sampler_list[PIPE_MAX_SAMPLERS];
94 struct pipe_clip_state clip;
95 struct pipe_resource *constants[PIPE_SHADER_TYPES];
96 struct pipe_framebuffer_state framebuffer;
97 struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
98 struct pipe_scissor_state scissor;
99 struct pipe_viewport_state viewport;
100 unsigned sample_mask;
101
102 GLuint num_samplers;
103 GLuint num_textures;
104
105 GLuint poly_stipple[32]; /**< In OpenGL's bottom-to-top order */
106 } state;
107
108 struct {
109 struct st_tracked_state tracked_state[PIPE_SHADER_TYPES];
110 } constants;
111
112 /* XXX unused: */
113 struct {
114 struct gl_fragment_program *fragment_program;
115 } cb;
116
117 char vendor[100];
118 char renderer[100];
119
120 struct st_state_flags dirty;
121
122 GLboolean missing_textures;
123 GLboolean vertdata_edgeflags;
124
125 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
126 const GLuint *vertex_result_to_slot;
127
128 struct st_vertex_program *vp; /**< Currently bound vertex program */
129 struct st_fragment_program *fp; /**< Currently bound fragment program */
130 struct st_geometry_program *gp; /**< Currently bound geometry program */
131
132 struct st_vp_variant *vp_variant;
133 struct st_fp_variant *fp_variant;
134 struct st_gp_variant *gp_variant;
135
136 struct gl_texture_object *default_texture;
137
138 struct {
139 struct gl_program_cache *cache;
140 struct st_fragment_program *program; /**< cur pixel transfer prog */
141 GLuint xfer_prog_sn; /**< pixel xfer program serial no. */
142 GLuint user_prog_sn; /**< user fragment program serial no. */
143 struct st_fragment_program *combined_prog;
144 GLuint combined_prog_sn;
145 struct pipe_resource *pixelmap_texture;
146 struct pipe_sampler_view *pixelmap_sampler_view;
147 boolean pixelmap_enabled; /**< use the pixelmap texture? */
148 } pixel_xfer;
149
150 /** for glBitmap */
151 struct {
152 struct pipe_rasterizer_state rasterizer;
153 struct pipe_sampler_state samplers[2];
154 enum pipe_format tex_format;
155 void *vs;
156 float vertices[4][3][4]; /**< vertex pos + color + texcoord */
157 struct pipe_resource *vbuf;
158 unsigned vbuf_slot; /* next free slot in vbuf */
159 struct bitmap_cache *cache;
160 } bitmap;
161
162 /** for glDraw/CopyPixels */
163 struct {
164 struct gl_fragment_program *shaders[4];
165 void *vert_shaders[2]; /**< ureg shaders */
166 } drawpix;
167
168 /** for glClear */
169 struct {
170 struct pipe_rasterizer_state raster;
171 struct pipe_viewport_state viewport;
172 struct pipe_clip_state clip;
173 void *vs;
174 void *fs;
175 float vertices[4][2][4]; /**< vertex pos + color */
176 struct pipe_resource *vbuf;
177 unsigned vbuf_slot;
178 boolean enable_ds_separate;
179 } clear;
180
181 /** used for anything using util_draw_vertex_buffer */
182 struct pipe_vertex_element velems_util_draw[3];
183
184 void *passthrough_fs; /**< simple pass-through frag shader */
185
186 enum pipe_texture_target internal_target;
187 struct gen_mipmap_state *gen_mipmap;
188 struct blit_state *blit;
189
190 struct cso_context *cso_context;
191
192 int force_msaa;
193 void *winsys_drawable_handle;
194 };
195
196
197 /* Need this so that we can implement Mesa callbacks in this module.
198 */
199 static INLINE struct st_context *st_context(struct gl_context *ctx)
200 {
201 return ctx->st;
202 }
203
204
205 /**
206 * Wrapper for struct gl_framebuffer.
207 * This is an opaque type to the outside world.
208 */
209 struct st_framebuffer
210 {
211 struct gl_framebuffer Base;
212 void *Private;
213
214 struct st_framebuffer_iface *iface;
215 enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
216 unsigned num_statts;
217 int32_t revalidate;
218 };
219
220
221 extern void st_init_driver_functions(struct dd_function_table *functions);
222
223 void st_invalidate_state(struct gl_context * ctx, GLuint new_state);
224
225
226
227 #define Y_0_TOP 1
228 #define Y_0_BOTTOM 2
229
230 static INLINE GLuint
231 st_fb_orientation(const struct gl_framebuffer *fb)
232 {
233 if (fb && fb->Name == 0) {
234 /* Drawing into a window (on-screen buffer).
235 *
236 * Negate Y scale to flip image vertically.
237 * The NDC Y coords prior to viewport transformation are in the range
238 * [y=-1=bottom, y=1=top]
239 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
240 * H is the window height.
241 * Use the viewport transformation to invert Y.
242 */
243 return Y_0_TOP;
244 }
245 else {
246 /* Drawing into user-created FBO (very likely a texture).
247 *
248 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
249 */
250 return Y_0_BOTTOM;
251 }
252 }
253
254
255 /** clear-alloc a struct-sized object, with casting */
256 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
257
258
259 extern int
260 st_get_msaa(void);
261
262 extern struct st_context *
263 st_create_context(gl_api api, struct pipe_context *pipe,
264 const struct gl_config *visual,
265 struct st_context *share);
266
267 extern void
268 st_destroy_context(struct st_context *st);
269
270
271 #endif