diff options
Diffstat (limited to 'src/mesa/main/texcompress_fxt1.c')
| -rw-r--r-- | src/mesa/main/texcompress_fxt1.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/mesa/main/texcompress_fxt1.c b/src/mesa/main/texcompress_fxt1.c new file mode 100644 index 0000000000..f18f717fc6 --- /dev/null +++ b/src/mesa/main/texcompress_fxt1.c @@ -0,0 +1,155 @@ +/* + * Mesa 3-D graphics library + * Version: 6.1 + * + * Copyright (C) 1999-2004 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * \file texcompress_fxt1.c + * GL_EXT_texture_compression_fxt1 support. + */ + + +#include "glheader.h" +#include "imports.h" +#include "colormac.h" +#include "context.h" +#include "convolve.h" +#include "image.h" +#include "texcompress.h" +#include "texformat.h" +#include "texstore.h" + + +void +_mesa_init_texture_fxt1( GLcontext *ctx ) +{ + /* called during context initialization */ +} + + +static GLboolean +texstore_rgb_fxt1(STORE_PARAMS) +{ + /* XXX to do */ + return GL_FALSE; +} + + +static GLboolean +texstore_rgba_fxt1(STORE_PARAMS) +{ + /* XXX to do */ + return GL_FALSE; +} + + + +static void +fetch_texel_2d_rgba_fxt1( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + /* XXX to do */ +} + + +static void +fetch_texel_2d_f_rgba_fxt1( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* just sample as GLchan and convert to float here */ + GLchan rgba[4]; + fetch_texel_2d_rgba_fxt1(texImage, i, j, k, rgba); + texel[RCOMP] = CHAN_TO_FLOAT(rgba[RCOMP]); + texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]); + texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]); + texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); +} + + +static void +fetch_texel_2d_rgb_fxt1( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + /* XXX to do */ +} + + +static void +fetch_texel_2d_f_rgb_fxt1( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* just sample as GLchan and convert to float here */ + GLchan rgba[4]; + fetch_texel_2d_rgb_fxt1(texImage, i, j, k, rgba); + texel[RCOMP] = CHAN_TO_FLOAT(rgba[RCOMP]); + texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]); + texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]); + texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); +} + + + +const struct gl_texture_format _mesa_texformat_rgb_fxt1 = { + MESA_FORMAT_RGB_FXT1, /* MesaFormat */ + GL_RGB, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4, /*approx*/ /* RedBits */ + 4, /*approx*/ /* GreenBits */ + 4, /*approx*/ /* BlueBits */ + 0, /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* TexelBytes */ + texstore_rgb_fxt1, /* StoreTexImageFunc */ + NULL, /*impossible*/ /* FetchTexel1D */ + fetch_texel_2d_rgb_fxt1, /* FetchTexel2D */ + NULL, /*impossible*/ /* FetchTexel3D */ + NULL, /*impossible*/ /* FetchTexel1Df */ + fetch_texel_2d_f_rgb_fxt1, /* FetchTexel2Df */ + NULL, /*impossible*/ /* FetchTexel3Df */ +}; + +const struct gl_texture_format _mesa_texformat_rgba_fxt1 = { + MESA_FORMAT_RGBA_FXT1, /* MesaFormat */ + GL_RGBA, /* BaseFormat */ + GL_UNSIGNED_NORMALIZED_ARB, /* DataType */ + 4, /*approx*/ /* RedBits */ + 4, /*approx*/ /* GreenBits */ + 4, /*approx*/ /* BlueBits */ + 1, /*approx*/ /* AlphaBits */ + 0, /* LuminanceBits */ + 0, /* IntensityBits */ + 0, /* IndexBits */ + 0, /* DepthBits */ + 0, /* TexelBytes */ + texstore_rgba_fxt1, /* StoreTexImageFunc */ + NULL, /*impossible*/ /* FetchTexel1D */ + fetch_texel_2d_rgba_fxt1, /* FetchTexel2D */ + NULL, /*impossible*/ /* FetchTexel3D */ + NULL, /*impossible*/ /* FetchTexel1Df */ + fetch_texel_2d_f_rgba_fxt1, /* FetchTexel2Df */ + NULL, /*impossible*/ /* FetchTexel3Df */ +}; + |