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
;
44 #define ST_NEW_MESA 0x1 /* Mesa state has changed */
45 #define ST_NEW_FRAGMENT_PROGRAM 0x2
46 #define ST_NEW_VERTEX_PROGRAM 0x4
49 struct st_state_flags
{
54 struct st_tracked_state
{
56 struct st_state_flags dirty
;
57 void (*update
)( struct st_context
*st
);
62 struct st_texture_image
64 struct gl_texture_image base
;
66 /* These aren't stored in gl_texture_image
71 /* If stImage->pt != NULL, image data is stored here.
72 * Else if stImage->base.Data != NULL, image is stored there.
73 * Else there is no image data.
75 struct pipe_texture
*pt
;
77 struct pipe_surface
*surface
;
86 struct pipe_context
*pipe
;
88 struct draw_context
*draw
; /**< For selection/feedback/rastpos only */
89 struct draw_stage
*feedback_stage
; /**< For GL_FEEDBACK rendermode */
90 struct draw_stage
*selection_stage
; /**< For GL_SELECT rendermode */
91 struct draw_stage
*rastpos_stage
; /**< For glRasterPos */
93 /* Some state is contained in constant objects.
94 * Other state is just parameter values.
97 const struct cso_alpha_test
*alpha_test
;
98 const struct cso_blend
*blend
;
99 const struct cso_sampler
*sampler
[PIPE_MAX_SAMPLERS
];
100 const struct cso_depth_stencil_alpha
*depth_stencil
;
101 const struct cso_rasterizer
*rasterizer
;
102 const struct cso_fragment_shader
*fs
;
103 struct st_vertex_program
*vs
;
105 struct pipe_blend_color blend_color
;
106 struct pipe_clip_state clip
;
107 struct pipe_constant_buffer constants
[2];
108 struct pipe_framebuffer_state framebuffer
;
109 struct pipe_texture
*sampler_texture
[PIPE_MAX_SAMPLERS
];
110 struct pipe_poly_stipple poly_stipple
;
111 struct pipe_scissor_state scissor
;
112 struct pipe_viewport_state viewport
;
116 struct st_tracked_state tracked_state
[2];
121 struct gl_fragment_program
*fragment_program
;
125 GLuint frontbuffer_dirty
:1;
131 /** Can we access the front/back color buffers as pipe_surfaces?
132 * We can't with the Xlib driver...
133 * This is a hack that should be fixed someday.
135 GLboolean haveFramebufferSurfaces
;
137 /* State to be validated:
139 struct st_tracked_state
**atoms
;
142 struct st_state_flags dirty
;
144 GLfloat polygon_offset_scale
; /* ?? */
146 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
147 const GLuint
*vertex_result_to_slot
;
149 struct st_vertex_program
*vp
; /**< Currently bound vertex program */
150 struct st_fragment_program
*fp
; /**< Currently bound fragment program */
153 struct gl_program_cache
*cache
;
154 struct st_fragment_program
*program
; /**< cur pixel transfer prog */
155 GLuint xfer_prog_sn
; /**< pixel xfer program serial no. */
156 GLuint user_prog_sn
; /**< user fragment program serial no. */
157 struct st_fragment_program
*combined_prog
;
158 GLuint combined_prog_sn
;
162 struct st_fragment_program
*program
; /**< bitmap tex/kil program */
163 GLuint user_prog_sn
; /**< user fragment program serial no. */
164 struct st_fragment_program
*combined_prog
;
167 struct cso_cache
*cache
;
171 /* Need this so that we can implement Mesa callbacks in this module.
173 static INLINE
struct st_context
*st_context(GLcontext
*ctx
)
180 * Wrapper for GLframebuffer.
181 * This is an opaque type to the outside world.
183 struct st_framebuffer
187 GLuint InitWidth
, InitHeight
;
191 extern void st_init_driver_functions(struct dd_function_table
*functions
);
193 void st_invalidate_state(GLcontext
* ctx
, GLuint new_state
);
201 st_fb_orientation(const struct gl_framebuffer
*fb
)
203 if (fb
&& fb
->Name
== 0) {
204 /* Drawing into a window (on-screen buffer).
206 * Negate Y scale to flip image vertically.
207 * The NDC Y coords prior to viewport transformation are in the range
208 * [y=-1=bottom, y=1=top]
209 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
210 * H is the window height.
211 * Use the viewport transformation to invert Y.
216 /* Drawing into user-created FBO (very likely a texture).
218 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.