-void st_invalidate_state(struct gl_context * ctx, GLbitfield new_state);
-
-
-
-#define Y_0_TOP 1
-#define Y_0_BOTTOM 2
-
-static inline GLuint
-st_fb_orientation(const struct gl_framebuffer *fb)
-{
- if (fb && _mesa_is_winsys_fbo(fb)) {
- /* 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;
- }
-}
-
-
-static inline unsigned
-st_shader_stage_to_ptarget(gl_shader_stage stage)
-{
- switch (stage) {
- case MESA_SHADER_VERTEX:
- return PIPE_SHADER_VERTEX;
- case MESA_SHADER_FRAGMENT:
- return PIPE_SHADER_FRAGMENT;
- case MESA_SHADER_GEOMETRY:
- return PIPE_SHADER_GEOMETRY;
- case MESA_SHADER_TESS_CTRL:
- return PIPE_SHADER_TESS_CTRL;
- case MESA_SHADER_TESS_EVAL:
- return PIPE_SHADER_TESS_EVAL;
- case MESA_SHADER_COMPUTE:
- return PIPE_SHADER_COMPUTE;
- }
-
- assert(!"should not be reached");
- return PIPE_SHADER_VERTEX;
-}
-
-
-/** clear-alloc a struct-sized object, with casting */
-#define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
-
-
-extern struct st_context *
-st_create_context(gl_api api, struct pipe_context *pipe,
- const struct gl_config *visual,
- struct st_context *share,
- const struct st_config_options *options);
-
-extern void
-st_destroy_context(struct st_context *st);