st_context.h File Reference

Include dependency graph for st_context.h:

Go to the source code of this file.

Data Structures
struct	st_state_flags
struct	st_tracked_state
struct	st_context
struct	st_framebuffer
	Wrapper for GLframebuffer. More...
Defines
#define	FRONT_STATUS_UNDEFINED   0
#define	FRONT_STATUS_DIRTY   1
#define	FRONT_STATUS_COPY_OF_BACK   2
#define	ST_NEW_MESA   0x1
#define	ST_NEW_FRAGMENT_PROGRAM   0x2
#define	ST_NEW_VERTEX_PROGRAM   0x4
#define	ST_NEW_FRAMEBUFFER   0x8
#define	Y_0_TOP   1
#define	Y_0_BOTTOM   2
Functions
static struct st_context *	st_context (GLcontext *ctx)
void	st_init_driver_functions (struct dd_function_table *functions)
void	st_invalidate_state (GLcontext *ctx, GLuint new_state)
	Called via ctx->Driver.UpdateState().
static GLuint	st_fb_orientation (const struct gl_framebuffer *fb)
int	st_get_msaa (void)
	Check for multisample env var override.

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Define Documentation

#define FRONT_STATUS_COPY_OF_BACK   2

Definition at line 50 of file st_context.h.

#define FRONT_STATUS_DIRTY   1

Definition at line 49 of file st_context.h.

#define FRONT_STATUS_UNDEFINED   0

Definition at line 48 of file st_context.h.

#define ST_NEW_FRAGMENT_PROGRAM   0x2

Definition at line 54 of file st_context.h.

#define ST_NEW_FRAMEBUFFER   0x8

Definition at line 56 of file st_context.h.

#define ST_NEW_MESA   0x1

Definition at line 53 of file st_context.h.

#define ST_NEW_VERTEX_PROGRAM   0x4

Definition at line 55 of file st_context.h.

#define Y_0_BOTTOM   2

Definition at line 218 of file st_context.h.

#define Y_0_TOP   1

Definition at line 217 of file st_context.h.

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Function Documentation

static struct st_context* st_context

(

GLcontext *

ctx

)

[static, read]

Definition at line 193 of file st_context.h.

{
   return ctx->st;
}

static GLuint st_fb_orientation

(

const struct gl_framebuffer *

fb

)

[static]

Definition at line 221 of file st_context.h.

References Y_0_BOTTOM, and Y_0_TOP.

{
   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;
   }
}

int st_get_msaa

(

void

)

Check for multisample env var override.

Definition at line 95 of file st_context.c.

{
   const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
   if (msaa)
      return atoi(msaa);
   return 0;
}

void st_init_driver_functions

(

struct dd_function_table *

functions

)

Definition at line 294 of file st_context.c.

References st_init_accum_functions(), st_init_bitmap_functions(), st_init_blit_functions(), st_init_bufferobject_functions(), st_init_clear_functions(), st_init_drawpixels_functions(), st_init_fbo_functions(), st_init_feedback_functions(), st_init_flush_functions(), st_init_get_functions(), st_init_program_functions(), st_init_query_functions(), st_init_rasterpos_functions(), st_init_readpixels_functions(), st_init_string_functions(), st_init_texture_functions(), and st_invalidate_state().

{
   _mesa_init_glsl_driver_functions(functions);

#if FEATURE_accum
   st_init_accum_functions(functions);
#endif
#if FEATURE_EXT_framebuffer_blit
   st_init_blit_functions(functions);
#endif
   st_init_bufferobject_functions(functions);
   st_init_clear_functions(functions);
#if FEATURE_drawpix
   st_init_bitmap_functions(functions);
   st_init_drawpixels_functions(functions);
   st_init_rasterpos_functions(functions);
#endif
   st_init_fbo_functions(functions);
   st_init_get_functions(functions);
#if FEATURE_feedback
   st_init_feedback_functions(functions);
#endif
   st_init_program_functions(functions);
#if FEATURE_ARB_occlusion_query
   st_init_query_functions(functions);
#endif
   st_init_readpixels_functions(functions);
   st_init_texture_functions(functions);
   st_init_flush_functions(functions);
   st_init_string_functions(functions);

   functions->UpdateState = st_invalidate_state;
}

void st_invalidate_state	(	GLcontext *	ctx,
		GLuint	new_state
	)

Called via ctx->Driver.UpdateState().

Definition at line 77 of file st_context.c.

References st_context::dirty, st_state_flags::mesa, st_state_flags::st, st_context(), and ST_NEW_MESA.

{
   struct st_context *st = st_context(ctx);

   st->dirty.mesa |= new_state;
   st->dirty.st |= ST_NEW_MESA;

   /* This is the only core Mesa module we depend upon.
    * No longer use swrast, swsetup, tnl.
    */
   _vbo_InvalidateState(ctx, new_state);
}

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