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
|
/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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 "shader/prog_cache.h"
#include "pipe/p_state.h"
struct st_context;
struct st_region;
struct st_texture_object;
struct st_texture_image;
struct st_fragment_program;
struct draw_context;
struct draw_stage;
struct cso_cache;
struct cso_blend;
#define ST_NEW_MESA 0x1 /* Mesa state has changed */
#define ST_NEW_FRAGMENT_PROGRAM 0x2
#define ST_NEW_VERTEX_PROGRAM 0x4
struct st_state_flags {
GLuint mesa;
GLuint st;
};
struct st_tracked_state {
const char *name;
struct st_state_flags dirty;
void (*update)( struct st_context *st );
};
struct st_context
{
GLcontext *ctx;
struct pipe_context *pipe;
struct draw_context *draw; /**< For selection/feedback */
struct draw_stage *feedback_stage; /**< For GL_FEEDBACK rendermode */
struct draw_stage *selection_stage; /**< For GL_SELECT rendermode */
/* Some state is contained in constant objects.
* Other state is just parameter values.
*/
struct {
const struct cso_alpha_test *alpha_test;
const struct cso_blend *blend;
const struct cso_sampler *sampler[PIPE_MAX_SAMPLERS];
const struct cso_depth_stencil *depth_stencil;
const struct cso_rasterizer *rasterizer;
const struct cso_fragment_shader *fs;
const struct cso_vertex_shader *vs;
struct pipe_blend_color blend_color;
struct pipe_clear_color_state clear_color;
struct pipe_clip_state clip;
struct pipe_constant_buffer constants[2];
struct pipe_feedback_state feedback;
struct pipe_framebuffer_state framebuffer;
struct pipe_mipmap_tree *texture[PIPE_MAX_SAMPLERS];
struct pipe_poly_stipple poly_stipple;
struct pipe_scissor_state scissor;
struct pipe_viewport_state viewport;
} state;
struct {
struct st_tracked_state tracked_state[2];
} constants;
/* XXX unused: */
struct {
struct gl_fragment_program *fragment_program;
} cb;
struct {
GLuint frontbuffer_dirty:1;
} flags;
char vendor[100];
char renderer[100];
/** Can we access the front/back color buffers as pipe_regions?
* We can't with the Xlib driver...
* This is a hack that should be fixed someday.
*/
GLboolean haveFramebufferRegions;
/* State to be validated:
*/
struct st_tracked_state **atoms;
GLuint nr_atoms;
struct st_state_flags dirty;
GLfloat polygon_offset_scale; /* ?? */
/** Mapping from VERT_RESULT_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 {
struct gl_program_cache *cache;
struct st_fragment_program *program; /**< cur pixel transfer prog */
GLuint xfer_prog_sn; /**< pixel xfer program serial no. */
GLuint user_prog_sn; /**< user fragment program serial no. */
struct st_fragment_program *combined_prog;
GLuint combined_prog_sn;
} pixel_xfer;
struct {
struct st_fragment_program *program; /**< bitmap tex/kil program */
GLuint user_prog_sn; /**< user fragment program serial no. */
struct st_fragment_program *combined_prog;
} bitmap;
/**
* Buffer object which stores the ctx->Current.Attrib[] values.
* Used for vertex array drawing when we we need an attribute for
* which there's no enabled array.
*/
struct pipe_buffer_handle *default_attrib_buffer;
struct cso_cache *cache;
};
/* Need this so that we can implement Mesa callbacks in this module.
*/
static INLINE struct st_context *st_context(GLcontext *ctx)
{
return ctx->st;
}
extern void st_init_driver_functions(struct dd_function_table *functions);
#define Y_0_TOP 1
#define Y_0_BOTTOM 2
static INLINE GLuint
st_fb_orientation(const struct gl_framebuffer *fb)
{
if (fb && fb->Name == 0) {
/* 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;
}
}
#endif
|
