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"
34 #include "state_tracker/st_api.h"
38 struct st_texture_object;
39 struct st_fragment_program;
44 struct gen_mipmap_state;
49 /** XXX we'd like to get rid of these */
50 #define FRONT_STATUS_UNDEFINED 0
51 #define FRONT_STATUS_DIRTY 1
52 #define FRONT_STATUS_COPY_OF_BACK 2
55 #define ST_NEW_MESA 0x1 /* Mesa state has changed */
56 #define ST_NEW_FRAGMENT_PROGRAM 0x2
57 #define ST_NEW_VERTEX_PROGRAM 0x4
58 #define ST_NEW_FRAMEBUFFER 0x8
59 #define ST_NEW_EDGEFLAGS_DATA 0x10
62 struct st_state_flags {
67 struct st_tracked_state {
69 struct st_state_flags dirty;
70 void (*update)( struct st_context *st );
77 struct st_context_iface iface;
81 struct pipe_context *pipe;
83 struct draw_context *draw; /**< For selection/feedback/rastpos only */
84 struct draw_stage *feedback_stage; /**< For GL_FEEDBACK rendermode */
85 struct draw_stage *selection_stage; /**< For GL_SELECT rendermode */
86 struct draw_stage *rastpos_stage; /**< For glRasterPos */
88 /* Some state is contained in constant objects.
89 * Other state is just parameter values.
92 struct pipe_blend_state blend;
93 struct pipe_depth_stencil_alpha_state depth_stencil;
94 struct pipe_rasterizer_state rasterizer;
95 struct pipe_sampler_state samplers[PIPE_MAX_SAMPLERS];
96 struct pipe_sampler_state *sampler_list[PIPE_MAX_SAMPLERS];
97 struct pipe_clip_state clip;
98 struct pipe_resource *constants[2];
99 struct pipe_framebuffer_state framebuffer;
100 struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
101 struct pipe_scissor_state scissor;
102 struct pipe_viewport_state viewport;
107 GLuint poly_stipple[32]; /**< In OpenGL's bottom-to-top order */
111 struct st_tracked_state tracked_state[PIPE_SHADER_TYPES];
116 struct gl_fragment_program *fragment_program;
119 GLuint frontbuffer_status; /**< one of FRONT_STATUS_ (XXX to be removed) */
124 struct st_state_flags dirty;
126 GLboolean missing_textures;
127 GLboolean vertdata_edgeflags;
129 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
130 const GLuint *vertex_result_to_slot;
132 struct st_vertex_program *vp; /**< Currently bound vertex program */
133 struct st_fragment_program *fp; /**< Currently bound fragment program */
135 struct st_vp_varient *vp_varient;
137 struct gl_texture_object *default_texture;
140 struct gl_program_cache *cache;
141 struct st_fragment_program *program; /**< cur pixel transfer prog */
142 GLuint xfer_prog_sn; /**< pixel xfer program serial no. */
143 GLuint user_prog_sn; /**< user fragment program serial no. */
144 struct st_fragment_program *combined_prog;
145 GLuint combined_prog_sn;
146 struct pipe_resource *pixelmap_texture;
147 struct pipe_sampler_view *pixelmap_sampler_view;
148 boolean pixelmap_enabled; /**< use the pixelmap texture? */
153 struct pipe_rasterizer_state rasterizer;
154 struct pipe_sampler_state sampler;
155 enum pipe_format tex_format;
157 float vertices[4][3][4]; /**< vertex pos + color + texcoord */
158 struct pipe_resource *vbuf;
159 unsigned vbuf_slot; /* next free slot in vbuf */
160 struct bitmap_cache *cache;
163 /** for glDraw/CopyPixels */
165 struct st_fragment_program *z_shader;
166 void *vert_shaders[2]; /**< ureg shaders */
171 struct pipe_rasterizer_state raster;
172 struct pipe_viewport_state viewport;
173 struct pipe_clip_state clip;
176 float vertices[4][2][4]; /**< vertex pos + color */
177 struct pipe_resource *vbuf;
181 /** used for anything using util_draw_vertex_buffer */
182 struct pipe_vertex_element velems_util_draw[3];
184 void *passthrough_fs; /**< simple pass-through frag shader */
186 struct gen_mipmap_state *gen_mipmap;
187 struct blit_state *blit;
189 struct cso_context *cso_context;
192 void *winsys_drawable_handle;
196 /* Need this so that we can implement Mesa callbacks in this module.
198 static INLINE struct st_context *st_context(GLcontext *ctx)
205 * Wrapper for GLframebuffer.
206 * This is an opaque type to the outside world.
208 struct st_framebuffer
212 GLuint InitWidth, InitHeight;
214 struct st_framebuffer_iface *iface;
215 enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
221 extern void st_init_driver_functions(struct dd_function_table *functions);
223 void st_invalidate_state(GLcontext * ctx, GLuint new_state);
231 st_fb_orientation(const struct gl_framebuffer *fb)
233 if (fb && fb->Name == 0) {
234 /* Drawing into a window (on-screen buffer).
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.
246 /* Drawing into user-created FBO (very likely a texture).
248 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
255 /** clear-alloc a struct-sized object, with casting */
256 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))