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#ifndef GALLIUM_RAW_DL_H
#define GALLIUM_RAW_DL_H
/* This is an API for exercising gallium functionality in a
* platform-neutral fashion. Whatever platform integration is
* necessary to implement this interface is orchestrated by the
* individual target building this entity.
*
* For instance, the graw-xlib target includes code to implent these
* interfaces on top of the X window system.
*
* Programs using this interface may additionally benefit from some of
* the utilities currently in the libgallium.a library, especially
* those for parsing text representations of TGSI shaders.
*/
#include <stdio.h>
#include "pipe/p_compiler.h"
#include "pipe/p_context.h"
#include "pipe/p_format.h"
#include "pipe/p_state.h"
#include "util/u_dl.h"
#include "tgsi/tgsi_text.h"
struct pipe_screen;
struct pipe_context;
typedef void *
(*pfn_graw_create_window_and_screen_t)( int x,
int y,
unsigned width,
unsigned height,
enum pipe_format format,
void **handle );
typedef void
(*pfn_graw_set_display_func_t)( void (*func)( void ) );
typedef void
(*pfn_graw_main_loop_t)( void );
static pfn_graw_create_window_and_screen_t
pfn_graw_create_window_and_screen = NULL;
static pfn_graw_set_display_func_t
pfn_graw_set_display_func = NULL;
static pfn_graw_main_loop_t
pfn_graw_main_loop = NULL;
static INLINE void *
graw_create_window_and_screen( int x,
int y,
unsigned width,
unsigned height,
enum pipe_format format,
void **handle )
{
static struct util_dl_library *lib;
lib = util_dl_open(UTIL_DL_PREFIX "graw" UTIL_DL_EXT);
if (!lib)
goto error;
pfn_graw_create_window_and_screen = (pfn_graw_create_window_and_screen_t)
util_dl_get_proc_address(lib, "graw_create_window_and_screen");
if (!pfn_graw_create_window_and_screen)
goto error;
pfn_graw_set_display_func = (pfn_graw_set_display_func_t)
util_dl_get_proc_address(lib, "graw_set_display_func");
if (!pfn_graw_set_display_func)
goto error;
pfn_graw_main_loop = (pfn_graw_main_loop_t)
util_dl_get_proc_address(lib, "graw_main_loop");
if (!pfn_graw_main_loop)
goto error;
return pfn_graw_create_window_and_screen(x, y, width, height, format, handle );
error:
fprintf(stderr, "failed to open " UTIL_DL_PREFIX "graw" UTIL_DL_EXT "\n");
return NULL;
}
static INLINE void
graw_set_display_func( void (*func)( void ) )
{
if (!pfn_graw_set_display_func)
return;
pfn_graw_set_display_func(func);
}
static INLINE void
graw_main_loop( void )
{
if (!pfn_graw_main_loop)
return;
pfn_graw_main_loop();
}
/*
* Helper functions. These are the same for all graw implementations.
*
* XXX: These aren't graw related. If they are useful then should go somwhere
* inside auxiliary/util.
*/
#define GRAW_MAX_NUM_TOKENS 1024
static INLINE void *
graw_parse_geometry_shader(struct pipe_context *pipe,
const char *text)
{
struct tgsi_token tokens[GRAW_MAX_NUM_TOKENS];
struct pipe_shader_state state;
if (!tgsi_text_translate(text, tokens, GRAW_MAX_NUM_TOKENS))
return NULL;
state.tokens = tokens;
return pipe->create_gs_state(pipe, &state);
}
static INLINE void *
graw_parse_vertex_shader(struct pipe_context *pipe,
const char *text)
{
struct tgsi_token tokens[GRAW_MAX_NUM_TOKENS];
struct pipe_shader_state state;
if (!tgsi_text_translate(text, tokens, GRAW_MAX_NUM_TOKENS))
return NULL;
state.tokens = tokens;
return pipe->create_vs_state(pipe, &state);
}
static INLINE void *
graw_parse_fragment_shader(struct pipe_context *pipe,
const char *text)
{
struct tgsi_token tokens[GRAW_MAX_NUM_TOKENS];
struct pipe_shader_state state;
if (!tgsi_text_translate(text, tokens, GRAW_MAX_NUM_TOKENS))
return NULL;
state.tokens = tokens;
return pipe->create_fs_state(pipe, &state);
}
#endif
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