diff options
| author | Roland Scheidegger <sroland@vmware.com> | 2009-03-27 19:39:52 +0100 |
|---|---|---|
| committer | Roland Scheidegger <sroland@vmware.com> | 2009-03-28 02:02:42 +0100 |
| commit | c6a6cc191813e8343a17b028146a34f193a6ce44 (patch) | |
| tree | cb1ecd35ac15c9b2c0cf3740dbdc631c7622233a /src/mesa/main/texformat_tmp.h | |
| parent | a9bf5b5ccac2a75f1a2470d4910361e65b2d8eab (diff) | |
mesa: add new signed rgba texture format
This is a (partial) backport of the signed texture format support in OGL 3.1.
Since it wasn't promoted from an existing extension roll our own.
Diffstat (limited to 'src/mesa/main/texformat_tmp.h')
| -rw-r--r-- | src/mesa/main/texformat_tmp.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/mesa/main/texformat_tmp.h b/src/mesa/main/texformat_tmp.h index 0f6a172ef0..604b1a744c 100644 --- a/src/mesa/main/texformat_tmp.h +++ b/src/mesa/main/texformat_tmp.h @@ -1321,6 +1321,28 @@ static void FETCH(dudv8)(const struct gl_texture_image *texImage, texel[ACOMP] = 0; } +/* MESA_FORMAT_SIGNED_ARGB8888 ***********************************************/ + +static void FETCH(signed_rgba8888)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1); + texel[RCOMP] = BYTE_TO_FLOAT_TEX( (s >> 24) ); + texel[GCOMP] = BYTE_TO_FLOAT_TEX( (s >> 16) & 0xff ); + texel[BCOMP] = BYTE_TO_FLOAT_TEX( (s >> 8) & 0xff ); + texel[ACOMP] = BYTE_TO_FLOAT_TEX( (s ) & 0xff ); +} + +#if DIM == 3 +static void store_texel_signed_rgba8888(struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, const void *texel) +{ + const GLbyte *rgba = (const GLbyte *) 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_YCBCR *********************************************************/ |