texformat_tmp.h

mesa-6.5-minigui源码

static void store_texel_alpha_f16(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLfloat *rgba = (const GLfloat *) texel;
   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
   dst[0] = _mesa_float_to_half(rgba[ACOMP]);
}
#endif


/* MESA_FORMAT_LUMINANCE_F32 *************************************************/

/* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT32 texture,
 * returning 4 GLfloats.
 */
static void FETCH(f_luminance_f32)( const struct gl_texture_image *texImage,
                                    GLint i, GLint j, GLint k, GLfloat *texel )
{
   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
   texel[RCOMP] =
   texel[GCOMP] =
   texel[BCOMP] = src[0];
   texel[ACOMP] = 1.0F;
}

#if DIM == 3
static void store_texel_luminance_f32(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLfloat *rgba = (const GLfloat *) texel;
   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
   dst[0] = rgba[RCOMP];
}
#endif


/* MESA_FORMAT_LUMINANCE_F16 *************************************************/

/* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT16 texture,
 * returning 4 GLfloats.
 */
static void FETCH(f_luminance_f16)( const struct gl_texture_image *texImage,
                                    GLint i, GLint j, GLint k, GLfloat *texel )
{
   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
   texel[RCOMP] =
   texel[GCOMP] =
   texel[BCOMP] = _mesa_half_to_float(src[0]);
   texel[ACOMP] = 1.0F;
}

#if DIM == 3
static void store_texel_luminance_f16(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLfloat *rgba = (const GLfloat *) texel;
   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
}
#endif


/* MESA_FORMAT_LUMINANCE_ALPHA_F32 *******************************************/

/* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT32 texture,
 * returning 4 GLfloats.
 */
static void FETCH(f_luminance_alpha_f32)( const struct gl_texture_image *texImage,
                                    GLint i, GLint j, GLint k, GLfloat *texel )
{
   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
   texel[RCOMP] =
   texel[GCOMP] =
   texel[BCOMP] = src[0];
   texel[ACOMP] = src[1];
}

#if DIM == 3
static void store_texel_luminance_alpha_f32(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLfloat *rgba = (const GLfloat *) texel;
   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
   dst[0] = rgba[RCOMP];
   dst[1] = rgba[ACOMP];
}
#endif


/* MESA_FORMAT_LUMINANCE_ALPHA_F16 *******************************************/

/* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT16 texture,
 * returning 4 GLfloats.
 */
static void FETCH(f_luminance_alpha_f16)( const struct gl_texture_image *texImage,
                                    GLint i, GLint j, GLint k, GLfloat *texel )
{
   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
   texel[RCOMP] =
   texel[GCOMP] =
   texel[BCOMP] = _mesa_half_to_float(src[0]);
   texel[ACOMP] = _mesa_half_to_float(src[1]);
}

#if DIM == 3
static void store_texel_luminance_alpha_f16(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLfloat *rgba = (const GLfloat *) texel;
   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
   dst[1] = _mesa_float_to_half(rgba[ACOMP]);
}
#endif


/* MESA_FORMAT_INTENSITY_F32 *************************************************/

/* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT32 texture,
 * returning 4 GLfloats.
 */
static void FETCH(f_intensity_f32)( const struct gl_texture_image *texImage,
                                    GLint i, GLint j, GLint k, GLfloat *texel )
{
   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
   texel[RCOMP] =
   texel[GCOMP] =
   texel[BCOMP] =
   texel[ACOMP] = src[0];
}

#if DIM == 3
static void store_texel_intensity_f32(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLfloat *rgba = (const GLfloat *) texel;
   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
   dst[0] = rgba[RCOMP];
}
#endif


/* MESA_FORMAT_INTENSITY_F16 *************************************************/

/* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT16 texture,
 * returning 4 GLfloats.
 */
static void FETCH(f_intensity_f16)( const struct gl_texture_image *texImage,
                                    GLint i, GLint j, GLint k, GLfloat *texel )
{
   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
   texel[RCOMP] =
   texel[GCOMP] =
   texel[BCOMP] =
   texel[ACOMP] = _mesa_half_to_float(src[0]);
}

#if DIM == 3
static void store_texel_intensity_f16(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLfloat *rgba = (const GLfloat *) texel;
   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
}
#endif




/*
 * Begin Hardware formats
 */

/* MESA_FORMAT_RGBA8888 ******************************************************/

/* Fetch texel from 1D, 2D or 3D rgba8888 texture, return 4 GLchans */
static void FETCH(rgba8888)( const struct gl_texture_image *texImage,
			     GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
   texel[RCOMP] = UBYTE_TO_CHAN( (s >> 24)        );
   texel[GCOMP] = UBYTE_TO_CHAN( (s >> 16) & 0xff );
   texel[BCOMP] = UBYTE_TO_CHAN( (s >>  8) & 0xff );
   texel[ACOMP] = UBYTE_TO_CHAN( (s      ) & 0xff );
}

#if DIM == 3
static void store_texel_rgba8888(struct gl_texture_image *texImage,
                                 GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
}
#endif


/* MESA_FORMAT_RGBA888_REV ***************************************************/

/* Fetch texel from 1D, 2D or 3D abgr8888 texture, return 4 GLchans */
static void FETCH(rgba8888_rev)( const struct gl_texture_image *texImage,
                                 GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
   texel[RCOMP] = UBYTE_TO_CHAN( (s      ) & 0xff );
   texel[GCOMP] = UBYTE_TO_CHAN( (s >>  8) & 0xff );
   texel[BCOMP] = UBYTE_TO_CHAN( (s >> 16) & 0xff );
   texel[ACOMP] = UBYTE_TO_CHAN( (s >> 24)        );
}

#if DIM == 3
static void store_texel_rgba8888_rev(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
   *dst = PACK_COLOR_8888_REV(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
}
#endif


/* MESA_FORMAT_ARGB8888 ******************************************************/

/* Fetch texel from 1D, 2D or 3D argb8888 texture, return 4 GLchans */
static void FETCH(argb8888)( const struct gl_texture_image *texImage,
			     GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
   texel[RCOMP] = UBYTE_TO_CHAN( (s >> 16) & 0xff );
   texel[GCOMP] = UBYTE_TO_CHAN( (s >>  8) & 0xff );
   texel[BCOMP] = UBYTE_TO_CHAN( (s      ) & 0xff );
   texel[ACOMP] = UBYTE_TO_CHAN( (s >> 24)        );
}

#if DIM == 3
static void store_texel_argb8888(struct gl_texture_image *texImage,
                                 GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
   *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
}
#endif


/* MESA_FORMAT_ARGB8888_REV **************************************************/

/* Fetch texel from 1D, 2D or 3D argb8888_rev texture, return 4 GLchans */
static void FETCH(argb8888_rev)( const struct gl_texture_image *texImage,
                                 GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
   texel[RCOMP] = UBYTE_TO_CHAN( (s >>  8) & 0xff );
   texel[GCOMP] = UBYTE_TO_CHAN( (s >> 16) & 0xff );
   texel[BCOMP] = UBYTE_TO_CHAN( (s >> 24)        );
   texel[ACOMP] = UBYTE_TO_CHAN( (s      ) & 0xff );
}

#if DIM == 3
static void store_texel_argb8888_rev(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
   *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
}
#endif


/* MESA_FORMAT_RGB888 ********************************************************/

/* Fetch texel from 1D, 2D or 3D rgb888 texture, return 4 GLchans */
static void FETCH(rgb888)( const struct gl_texture_image *texImage,
			   GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
   texel[RCOMP] = UBYTE_TO_CHAN( src[2] );
   texel[GCOMP] = UBYTE_TO_CHAN( src[1] );
   texel[BCOMP] = UBYTE_TO_CHAN( src[0] );
   texel[ACOMP] = CHAN_MAX;
}

#if DIM == 3
static void store_texel_rgb888(struct gl_texture_image *texImage,
                               GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
   dst[0] = rgba[RCOMP];
   dst[1] = rgba[GCOMP];
   dst[2] = rgba[BCOMP];
}
#endif


/* MESA_FORMAT_BGR888 ********************************************************/

/* Fetch texel from 1D, 2D or 3D bgr888 texture, return 4 GLchans */
static void FETCH(bgr888)( const struct gl_texture_image *texImage,
			   GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
   texel[RCOMP] = UBYTE_TO_CHAN( src[0] );
   texel[GCOMP] = UBYTE_TO_CHAN( src[1] );
   texel[BCOMP] = UBYTE_TO_CHAN( src[2] );
   texel[ACOMP] = CHAN_MAX;
}

#if DIM == 3
static void store_texel_bgr888(struct gl_texture_image *texImage,
                               GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
   dst[0] = rgba[BCOMP];
   dst[1] = rgba[GCOMP];
   dst[2] = rgba[RCOMP];
}
#endif


/* use color expansion like (g << 2) | (g >> 4) (does somewhat random rounding)
   instead of slow (g << 2) * 255 / 252 (always rounds down) */

/* MESA_FORMAT_RGB565 ********************************************************/

/* Fetch texel from 1D, 2D or 3D rgb565 texture, return 4 GLchans */
static void FETCH(rgb565)( const struct gl_texture_image *texImage,
			   GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
   const GLushort s = *src;
   texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) );
   texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) | ((s >>  9) & 0x3) );
   texel[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) | ((s >>  2) & 0x7) );
   texel[ACOMP] = CHAN_MAX;
}

#if DIM == 3
static void store_texel_rgb565(struct gl_texture_image *texImage,
                               GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
   *dst = PACK_COLOR_565(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
}
#endif


/* MESA_FORMAT_RGB565_REV ****************************************************/

/* Fetch texel from 1D, 2D or 3D rgb565_rev texture, return 4 GLchans */
static void FETCH(rgb565_rev)( const struct gl_texture_image *texImage,
                               GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
   const GLushort s = (*src >> 8) | (*src << 8); /* byte swap */
   texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) );
   texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) | ((s >>  9) & 0x3) );
   texel[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) | ((s >>  2) & 0x7) );
   texel[ACOMP] = CHAN_MAX;
}

#if DIM == 3
static void store_texel_rgb565_rev(struct gl_texture_image *texImage,
                                  GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
   *dst = PACK_COLOR_565(rgba[BCOMP], rgba[GCOMP], rgba[RCOMP]);
}
#endif


/* MESA_FORMAT_ARGB4444 ******************************************************/

/* Fetch texel from 1D, 2D or 3D argb444 texture, return 4 GLchans */
static void FETCH(argb4444)( const struct gl_texture_image *texImage,
			     GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
   const GLushort s = *src;
   texel[RCOMP] = UBYTE_TO_CHAN( ((s >>  8) & 0xf) | ((s >> 4) & 0xf0) );
   texel[GCOMP] = UBYTE_TO_CHAN( ((s >>  4) & 0xf) | ((s     ) & 0xf0) );
   texel[BCOMP] = UBYTE_TO_CHAN( ((s      ) & 0xf) | ((s << 4) & 0xf0) );
   texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) | ((s >> 8) & 0xf0) );
}

#if DIM == 3
static void store_texel_argb4444(struct gl_texture_image *texImage,
                                 GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
   *dst = PACK_COLOR_4444(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
}
#endif


/* MESA_FORMAT_ARGB4444_REV **************************************************/

/* Fetch texel from 1D, 2D or 3D argb4444_rev texture, return 4 GLchans */
static void FETCH(argb4444_rev)( const struct gl_texture_image *texImage,
                                 GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
   texel[RCOMP] = UBYTE_TO_CHAN( ((s      ) & 0xf) | ((s << 4) & 0xf0) );
   texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) | ((s >> 8) & 0xf0) );
   texel[BCOMP] = UBYTE_TO_CHAN( ((s >>  8) & 0xf) | ((s >> 4) & 0xf0) );
   texel[ACOMP] = UBYTE_TO_CHAN( ((s >>  4) & 0xf) | ((s     ) & 0xf0) );
}

#if DIM == 3
static void store_texel_argb4444_rev(struct gl_texture_image *texImage,
                                 GLint i, GLint j, GLint k, const void *texel)
{
   const GLubyte *rgba = (const GLubyte *) texel;
   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
   *dst = PACK_COLOR_4444(rgba[ACOMP], rgba[BCOMP], rgba[GCOMP], rgba[RCOMP]);
}
#endif


/* MESA_FORMAT_ARGB1555 ******************************************************/

/* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */
static void FETCH(argb1555)( const struct gl_texture_image *texImage,
			     GLint i, GLint j, GLint k, GLchan *texel )
{
   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);