mesa: fixup inconsistent naming of RG16 formats
[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.
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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 #include "main/fbobject.h"
35
36 struct bitmap_cache;
37 struct blit_state;
38 struct dd_function_table;
39 struct draw_context;
40 struct draw_stage;
41 struct gen_mipmap_state;
42 struct st_context;
43 struct st_fragment_program;
44 struct u_upload_mgr;
45
46
47 #define ST_NEW_MESA (1 << 0) /* Mesa state has changed */
48 #define ST_NEW_FRAGMENT_PROGRAM (1 << 1)
49 #define ST_NEW_VERTEX_PROGRAM (1 << 2)
50 #define ST_NEW_FRAMEBUFFER (1 << 3)
51 #define ST_NEW_EDGEFLAGS_DATA (1 << 4)
52 #define ST_NEW_GEOMETRY_PROGRAM (1 << 5)
53 #define ST_NEW_VERTEX_ARRAYS (1 << 6)
54
55
56 struct st_state_flags {
57 GLuint mesa;
58 GLuint st;
59 };
60
61 struct st_tracked_state {
62 const char *name;
63 struct st_state_flags dirty;
64 void (*update)( struct st_context *st );
65 };
66
67
68
69 struct st_context
70 {
71 struct st_context_iface iface;
72
73 struct gl_context *ctx;
74
75 struct pipe_context *pipe;
76
77 struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;
78
79 struct draw_context *draw; /**< For selection/feedback/rastpos only */
80 struct draw_stage *feedback_stage; /**< For GL_FEEDBACK rendermode */
81 struct draw_stage *selection_stage; /**< For GL_SELECT rendermode */
82 struct draw_stage *rastpos_stage; /**< For glRasterPos */
83 GLboolean clamp_frag_color_in_shader;
84 GLboolean clamp_vert_color_in_shader;
85 boolean has_stencil_export; /**< can do shader stencil export? */
86 boolean has_time_elapsed;
87 boolean has_shader_model3;
88
89 /* On old libGL's for linux we need to invalidate the drawables
90 * on glViewpport calls, this is set via a option.
91 */
92 boolean invalidate_on_gl_viewport;
93
94 boolean vertex_array_out_of_memory;
95
96 /* Some state is contained in constant objects.
97 * Other state is just parameter values.
98 */
99 struct {
100 struct pipe_blend_state blend;
101 struct pipe_depth_stencil_alpha_state depth_stencil;
102 struct pipe_rasterizer_state rasterizer;
103 struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
104 GLuint num_samplers[PIPE_SHADER_TYPES];
105 struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
106 GLuint num_sampler_views[PIPE_SHADER_TYPES];
107 struct pipe_clip_state clip;
108 struct {
109 void *ptr;
110 unsigned size;
111 } constants[PIPE_SHADER_TYPES];
112 struct pipe_framebuffer_state framebuffer;
113 struct pipe_scissor_state scissor;
114 struct pipe_viewport_state viewport;
115 unsigned sample_mask;
116
117 GLuint poly_stipple[32]; /**< In OpenGL's bottom-to-top order */
118
119 GLuint fb_orientation;
120 } state;
121
122 char vendor[100];
123 char renderer[100];
124
125 struct st_state_flags dirty;
126
127 GLboolean missing_textures;
128 GLboolean vertdata_edgeflags;
129
130 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
131 const GLuint *vertex_result_to_slot;
132
133 struct st_vertex_program *vp; /**< Currently bound vertex program */
134 struct st_fragment_program *fp; /**< Currently bound fragment program */
135 struct st_geometry_program *gp; /**< Currently bound geometry program */
136
137 struct st_vp_variant *vp_variant;
138 struct st_fp_variant *fp_variant;
139 struct st_gp_variant *gp_variant;
140
141 struct gl_texture_object *default_texture;
142
143 struct {
144 struct gl_program_cache *cache;
145 struct st_fragment_program *program; /**< cur pixel transfer prog */
146 GLuint xfer_prog_sn; /**< pixel xfer program serial no. */
147 GLuint user_prog_sn; /**< user fragment program serial no. */
148 struct st_fragment_program *combined_prog;
149 GLuint combined_prog_sn;
150 struct pipe_resource *pixelmap_texture;
151 struct pipe_sampler_view *pixelmap_sampler_view;
152 boolean pixelmap_enabled; /**< use the pixelmap texture? */
153 } pixel_xfer;
154
155 /** for glBitmap */
156 struct {
157 struct pipe_rasterizer_state rasterizer;
158 struct pipe_sampler_state samplers[2];
159 enum pipe_format tex_format;
160 void *vs;
161 struct bitmap_cache *cache;
162 } bitmap;
163
164 /** for glDraw/CopyPixels */
165 struct {
166 struct gl_fragment_program *shaders[4];
167 void *vert_shaders[2]; /**< ureg shaders */
168 } drawpix;
169
170 /** for glClear */
171 struct {
172 struct pipe_rasterizer_state raster;
173 struct pipe_viewport_state viewport;
174 void *vs;
175 void *fs;
176 } clear;
177
178 /** used for anything using util_draw_vertex_buffer */
179 struct pipe_vertex_element velems_util_draw[3];
180
181 void *passthrough_fs; /**< simple pass-through frag shader */
182
183 enum pipe_texture_target internal_target;
184 struct gen_mipmap_state *gen_mipmap;
185 struct blit_state *blit;
186
187 struct cso_context *cso_context;
188
189 void *winsys_drawable_handle;
190
191 /* The number of vertex buffers from the last call of validate_arrays. */
192 unsigned last_num_vbuffers;
193
194 int32_t draw_stamp;
195 int32_t read_stamp;
196
197 struct st_config_options options;
198 };
199
200
201 /* Need this so that we can implement Mesa callbacks in this module.
202 */
203 static INLINE struct st_context *st_context(struct gl_context *ctx)
204 {
205 return ctx->st;
206 }
207
208
209 /**
210 * Wrapper for struct gl_framebuffer.
211 * This is an opaque type to the outside world.
212 */
213 struct st_framebuffer
214 {
215 struct gl_framebuffer Base;
216 void *Private;
217
218 struct st_framebuffer_iface *iface;
219 enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
220 unsigned num_statts;
221 int32_t stamp;
222 int32_t iface_stamp;
223 };
224
225
226 extern void st_init_driver_functions(struct dd_function_table *functions);
227
228 void st_invalidate_state(struct gl_context * ctx, GLuint new_state);
229
230
231
232 #define Y_0_TOP 1
233 #define Y_0_BOTTOM 2
234
235 static INLINE GLuint
236 st_fb_orientation(const struct gl_framebuffer *fb)
237 {
238 if (fb && _mesa_is_winsys_fbo(fb)) {
239 /* Drawing into a window (on-screen buffer).
240 *
241 * Negate Y scale to flip image vertically.
242 * The NDC Y coords prior to viewport transformation are in the range
243 * [y=-1=bottom, y=1=top]
244 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
245 * H is the window height.
246 * Use the viewport transformation to invert Y.
247 */
248 return Y_0_TOP;
249 }
250 else {
251 /* Drawing into user-created FBO (very likely a texture).
252 *
253 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
254 */
255 return Y_0_BOTTOM;
256 }
257 }
258
259
260 /** clear-alloc a struct-sized object, with casting */
261 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
262
263
264 extern struct st_context *
265 st_create_context(gl_api api, struct pipe_context *pipe,
266 const struct gl_config *visual,
267 struct st_context *share,
268 const struct st_config_options *options);
269
270 extern void
271 st_destroy_context(struct st_context *st);
272
273
274 #endif