1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
31 #include "main/mtypes.h"
32 #include "shader/prog_cache.h"
33 #include "pipe/p_state.h"
37 struct st_texture_object
;
38 struct st_fragment_program
;
43 struct gen_mipmap_state
;
48 #define FRONT_STATUS_UNDEFINED 0
49 #define FRONT_STATUS_DIRTY 1
50 #define FRONT_STATUS_COPY_OF_BACK 2
53 #define ST_NEW_MESA 0x1 /* Mesa state has changed */
54 #define ST_NEW_FRAGMENT_PROGRAM 0x2
55 #define ST_NEW_VERTEX_PROGRAM 0x4
58 struct st_state_flags
{
63 struct st_tracked_state
{
65 struct st_state_flags dirty
;
66 void (*update
)( struct st_context
*st
);
75 struct pipe_context
*pipe
;
77 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
78 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
79 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
80 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
82 /* Some state is contained in constant objects.
83 * Other state is just parameter values.
86 struct pipe_blend_state blend
;
87 struct pipe_depth_stencil_alpha_state depth_stencil
;
88 struct pipe_rasterizer_state rasterizer
;
89 struct pipe_sampler_state samplers
[PIPE_MAX_SAMPLERS
];
90 struct pipe_sampler_state
*sampler_list
[PIPE_MAX_SAMPLERS
];
91 struct pipe_clip_state clip
;
92 struct pipe_constant_buffer constants
[2];
93 struct pipe_framebuffer_state framebuffer
;
94 struct pipe_texture
*sampler_texture
[PIPE_MAX_SAMPLERS
];
95 struct pipe_poly_stipple poly_stipple
;
96 struct pipe_scissor_state scissor
;
97 struct pipe_viewport_state viewport
;
104 struct st_tracked_state tracked_state
[2];
109 struct gl_fragment_program
*fragment_program
;
112 GLuint frontbuffer_status
; /**< one of FRONT_STATUS_ */
117 /* State to be validated:
119 struct st_tracked_state
**atoms
;
122 struct st_state_flags dirty
;
124 GLfloat polygon_offset_scale
; /* ?? */
126 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
127 const GLuint
*vertex_result_to_slot
;
129 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
130 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
133 struct gl_program_cache
*cache
;
134 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
135 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
136 GLuint user_prog_sn
; /**< user fragment program serial no. */
137 struct st_fragment_program
*combined_prog
;
138 GLuint combined_prog_sn
;
139 struct pipe_texture
*pixelmap_texture
;
140 boolean pixelmap_enabled
; /**< use the pixelmap texture? */
145 struct pipe_rasterizer_state rasterizer
;
146 struct pipe_sampler_state sampler
;
147 struct pipe_shader_state vert_shader
;
148 enum pipe_format tex_format
;
150 float vertices
[4][3][4]; /**< vertex pos + color + texcoord */
151 struct pipe_buffer
*vbuf
;
152 struct bitmap_cache
*cache
;
155 /** for glDraw/CopyPixels */
157 struct st_fragment_program
*z_shader
;
158 struct st_vertex_program
*vert_shaders
[2];
163 struct pipe_shader_state vert_shader
;
164 struct pipe_shader_state frag_shader
;
165 struct pipe_rasterizer_state raster
;
166 struct pipe_viewport_state viewport
;
169 float vertices
[4][2][4]; /**< vertex pos + color */
170 struct pipe_buffer
*vbuf
;
173 void *passthrough_fs
; /**< simple pass-through frag shader */
175 struct gen_mipmap_state
*gen_mipmap
;
176 struct blit_state
*blit
;
178 struct cso_context
*cso_context
;
182 /* Need this so that we can implement Mesa callbacks in this module.
184 static INLINE
struct st_context
*st_context(GLcontext
*ctx
)
191 * Wrapper for GLframebuffer.
192 * This is an opaque type to the outside world.
194 struct st_framebuffer
198 GLuint InitWidth
, InitHeight
;
202 extern void st_init_driver_functions(struct dd_function_table
*functions
);
204 void st_invalidate_state(GLcontext
* ctx
, GLuint new_state
);
212 st_fb_orientation(const struct gl_framebuffer
*fb
)
214 if (fb
&& fb
->Name
== 0) {
215 /* Drawing into a window (on-screen buffer).
217 * Negate Y scale to flip image vertically.
218 * The NDC Y coords prior to viewport transformation are in the range
219 * [y=-1=bottom, y=1=top]
220 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
221 * H is the window height.
222 * Use the viewport transformation to invert Y.
227 /* Drawing into user-created FBO (very likely a texture).
229 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.