diff options
Diffstat (limited to 'src/mesa/main/texcompress_rgtc.c')
| -rw-r--r-- | src/mesa/main/texcompress_rgtc.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/mesa/main/texcompress_rgtc.c b/src/mesa/main/texcompress_rgtc.c index 5773459d79f..de71f5da04b 100644 --- a/src/mesa/main/texcompress_rgtc.c +++ b/src/mesa/main/texcompress_rgtc.c @@ -447,3 +447,164 @@ _mesa_fetch_texel_signed_la_latc2(const struct swrast_texture_image *texImage, #undef TYPE #undef T_MIN #undef T_MAX + + + +static void +fetch_red_rgtc1(const GLubyte *map, const GLuint imageOffsets[], + GLint rowStride, GLint i, GLint j, GLint k, GLfloat *texel) +{ + GLubyte red; + GLuint sliceOffset = k ? imageOffsets[k] / 2 : 0; + unsigned_fetch_texel_rgtc(rowStride, map + sliceOffset, i, j, &red, 1); + texel[RCOMP] = UBYTE_TO_FLOAT(red); + texel[GCOMP] = 0.0; + texel[BCOMP] = 0.0; + texel[ACOMP] = 1.0; +} + +static void +fetch_l_latc1(const GLubyte *map, const GLuint imageOffsets[], + GLint rowStride, GLint i, GLint j, GLint k, GLfloat *texel) +{ + GLubyte red; + GLuint sliceOffset = k ? imageOffsets[k] / 2 : 0; + unsigned_fetch_texel_rgtc(rowStride, map + sliceOffset, i, j, &red, 1); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT(red); + texel[ACOMP] = 1.0; +} + +static void +fetch_signed_red_rgtc1(const GLubyte *map, const GLuint imageOffsets[], + GLint rowStride, GLint i, GLint j, GLint k, + GLfloat *texel) +{ + GLbyte red; + GLuint sliceOffset = k ? imageOffsets[k] / 2 : 0; + signed_fetch_texel_rgtc(rowStride, (const GLbyte *) map + sliceOffset, + i, j, &red, 1); + texel[RCOMP] = BYTE_TO_FLOAT_TEX(red); + texel[GCOMP] = 0.0; + texel[BCOMP] = 0.0; + texel[ACOMP] = 1.0; +} + +static void +fetch_signed_l_latc1(const GLubyte *map, const GLuint imageOffsets[], + GLint rowStride, GLint i, GLint j, GLint k, + GLfloat *texel) +{ + GLubyte red; + GLuint sliceOffset = k ? imageOffsets[k] / 2 : 0; + unsigned_fetch_texel_rgtc(rowStride, map + sliceOffset, i, j, &red, 1); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = BYTE_TO_FLOAT(red); + texel[ACOMP] = 1.0; +} + +static void +fetch_rg_rgtc2(const GLubyte *map, const GLuint imageOffsets[], + GLint rowStride, GLint i, GLint j, GLint k, + GLfloat *texel) +{ + GLubyte red, green; + GLuint sliceOffset = k ? imageOffsets[k] : 0; + unsigned_fetch_texel_rgtc(rowStride, + map + sliceOffset, + i, j, &red, 2); + unsigned_fetch_texel_rgtc(rowStride, + map + sliceOffset + 8, + i, j, &green, 2); + texel[RCOMP] = UBYTE_TO_FLOAT(red); + texel[GCOMP] = UBYTE_TO_FLOAT(green); + texel[BCOMP] = 0.0; + texel[ACOMP] = 1.0; +} + +static void +fetch_la_latc2(const GLubyte *map, const GLuint imageOffsets[], + GLint rowStride, GLint i, GLint j, GLint k, + GLfloat *texel) +{ + GLubyte red, green; + GLuint sliceOffset = k ? imageOffsets[k] : 0; + unsigned_fetch_texel_rgtc(rowStride, + map + sliceOffset, + i, j, &red, 2); + unsigned_fetch_texel_rgtc(rowStride, + map + sliceOffset + 8, + i, j, &green, 2); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT(red); + texel[ACOMP] = UBYTE_TO_FLOAT(green); +} + + +static void +fetch_signed_rg_rgtc2(const GLubyte *map, const GLuint imageOffsets[], + GLint rowStride, GLint i, GLint j, GLint k, + GLfloat *texel) +{ + GLbyte red, green; + GLuint sliceOffset = k ? imageOffsets[k] : 0; + signed_fetch_texel_rgtc(rowStride, + (GLbyte *) map + sliceOffset, + i, j, &red, 2); + signed_fetch_texel_rgtc(rowStride, + (GLbyte *) map + sliceOffset + 8, + i, j, &green, 2); + texel[RCOMP] = BYTE_TO_FLOAT_TEX(red); + texel[GCOMP] = BYTE_TO_FLOAT_TEX(green); + texel[BCOMP] = 0.0; + texel[ACOMP] = 1.0; +} + + +static void +fetch_signed_la_latc2(const GLubyte *map, const GLuint imageOffsets[], + GLint rowStride, GLint i, GLint j, GLint k, + GLfloat *texel) +{ + GLbyte red, green; + GLuint sliceOffset = k ? imageOffsets[k] : 0; + signed_fetch_texel_rgtc(rowStride, + (GLbyte *) map + sliceOffset, + i, j, &red, 2); + signed_fetch_texel_rgtc(rowStride, + (GLbyte *) map + sliceOffset + 8, + i, j, &green, 2); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = BYTE_TO_FLOAT_TEX(red); + texel[ACOMP] = BYTE_TO_FLOAT_TEX(green); +} + + +compressed_fetch_func +_mesa_get_compressed_rgtc_func(gl_format format) +{ + switch (format) { + case MESA_FORMAT_RED_RGTC1: + return fetch_red_rgtc1; + case MESA_FORMAT_L_LATC1: + return fetch_l_latc1; + case MESA_FORMAT_SIGNED_RED_RGTC1: + return fetch_signed_red_rgtc1; + case MESA_FORMAT_SIGNED_L_LATC1: + return fetch_signed_l_latc1; + case MESA_FORMAT_RG_RGTC2: + return fetch_rg_rgtc2; + case MESA_FORMAT_LA_LATC2: + return fetch_la_latc2; + case MESA_FORMAT_SIGNED_RG_RGTC2: + return fetch_signed_rg_rgtc2; + case MESA_FORMAT_SIGNED_LA_LATC2: + return fetch_signed_la_latc2; + default: + return NULL; + } +} |