/* * Mesa 3-D graphics library * Version: 7.7 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. * Copyright (c) 2009 VMware, Inc. * * 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 s_texfetch.c * * Texel fetch/store functions * * \author Gareth Hughes */ #include /* Texel fetch routines for all supported formats */ #define DIM 1 #include "s_texfetch_tmp.h" #define DIM 2 #include "s_texfetch_tmp.h" #define DIM 3 #include "s_texfetch_tmp.h" /** * Null texel fetch function. * * Have to have this so the FetchTexel function pointer is never NULL. */ static void fetch_null_texelf( const struct swrast_texture_image *texImage, GLint i, GLint j, GLint k, GLfloat *texel ) { (void) texImage; (void) i; (void) j; (void) k; texel[RCOMP] = 0.0; texel[GCOMP] = 0.0; texel[BCOMP] = 0.0; texel[ACOMP] = 0.0; _mesa_warning(NULL, "fetch_null_texelf() called!"); } /** * Table to map MESA_FORMAT_ to texel fetch/store funcs. * XXX this is somewhat temporary. */ static struct { gl_format Name; FetchTexelFunc Fetch1D; FetchTexelFunc Fetch2D; FetchTexelFunc Fetch3D; } texfetch_funcs[MESA_FORMAT_COUNT] = { { MESA_FORMAT_NONE, fetch_null_texelf, fetch_null_texelf, fetch_null_texelf }, { MESA_FORMAT_RGBA8888, fetch_texel_1d_f_rgba8888, fetch_texel_2d_f_rgba8888, fetch_texel_3d_f_rgba8888 }, { MESA_FORMAT_RGBA8888_REV, fetch_texel_1d_f_rgba8888_rev, fetch_texel_2d_f_rgba8888_rev, fetch_texel_3d_f_rgba8888_rev }, { MESA_FORMAT_ARGB8888, fetch_texel_1d_f_argb8888, fetch_texel_2d_f_argb8888, fetch_texel_3d_f_argb8888 }, { MESA_FORMAT_ARGB8888_REV, fetch_texel_1d_f_argb8888_rev, fetch_texel_2d_f_argb8888_rev, fetch_texel_3d_f_argb8888_rev }, { MESA_FORMAT_RGBX8888, fetch_texel_1d_f_rgbx8888, fetch_texel_2d_f_rgbx8888, fetch_texel_3d_f_rgbx8888 }, { MESA_FORMAT_RGBX8888_REV, fetch_texel_1d_f_rgbx8888_rev, fetch_texel_2d_f_rgbx8888_rev, fetch_texel_3d_f_rgbx8888_rev }, { MESA_FORMAT_XRGB8888, fetch_texel_1d_f_xrgb8888, fetch_texel_2d_f_xrgb8888, fetch_texel_3d_f_xrgb8888 }, { MESA_FORMAT_XRGB8888_REV, fetch_texel_1d_f_xrgb8888_rev, fetch_texel_2d_f_xrgb8888_rev, fetch_texel_3d_f_xrgb8888_rev }, { MESA_FORMAT_RGB888, fetch_texel_1d_f_rgb888, fetch_texel_2d_f_rgb888, fetch_texel_3d_f_rgb888 }, { MESA_FORMAT_BGR888, fetch_texel_1d_f_bgr888, fetch_texel_2d_f_bgr888, fetch_texel_3d_f_bgr888 }, { MESA_FORMAT_RGB565, fetch_texel_1d_f_rgb565, fetch_texel_2d_f_rgb565, fetch_texel_3d_f_rgb565 }, { MESA_FORMAT_RGB565_REV, fetch_texel_1d_f_rgb565_rev, fetch_texel_2d_f_rgb565_rev, fetch_texel_3d_f_rgb565_rev }, { MESA_FORMAT_ARGB4444, fetch_texel_1d_f_argb4444, fetch_texel_2d_f_argb4444, fetch_texel_3d_f_argb4444 }, { MESA_FORMAT_ARGB4444_REV, fetch_texel_1d_f_argb4444_rev, fetch_texel_2d_f_argb4444_rev, fetch_texel_3d_f_argb4444_rev }, { MESA_FORMAT_RGBA5551, fetch_texel_1d_f_rgba5551, fetch_texel_2d_f_rgba5551, fetch_texel_3d_f_rgba5551 }, { MESA_FORMAT_ARGB1555, fetch_texel_1d_f_argb1555, fetch_texel_2d_f_argb1555, fetch_texel_3d_f_argb1555 }, { MESA_FORMAT_ARGB1555_REV, fetch_texel_1d_f_argb1555_rev, fetch_texel_2d_f_argb1555_rev, fetch_texel_3d_f_argb1555_rev }, { MESA_FORMAT_AL44, fetch_texel_1d_f_al44, fetch_texel_2d_f_al44, fetch_texel_3d_f_al44 }, { MESA_FORMAT_AL88, fetch_texel_1d_f_al88, fetch_texel_2d_f_al88, fetch_texel_3d_f_al88 }, { MESA_FORMAT_AL88_REV, fetch_texel_1d_f_al88_rev, fetch_texel_2d_f_al88_rev, fetch_texel_3d_f_al88_rev }, { MESA_FORMAT_AL1616, fetch_texel_1d_f_al1616, fetch_texel_2d_f_al1616, fetch_texel_3d_f_al1616 }, { MESA_FORMAT_AL1616_REV, fetch_texel_1d_f_al1616_rev, fetch_texel_2d_f_al1616_rev, fetch_texel_3d_f_al1616_rev }, { MESA_FORMAT_RGB332, fetch_texel_1d_f_rgb332, fetch_texel_2d_f_rgb332, fetch_texel_3d_f_rgb332 }, { MESA_FORMAT_A8, fetch_texel_1d_f_a8, fetch_texel_2d_f_a8, fetch_texel_3d_f_a8 }, { MESA_FORMAT_A16, fetch_texel_1d_f_a16, fetch_texel_2d_f_a16, fetch_texel_3d_f_a16 }, { MESA_FORMAT_L8, fetch_texel_1d_f_l8, fetch_texel_2d_f_l8, fetch_texel_3d_f_l8 }, { MESA_FORMAT_L16, fetch_texel_1d_f_l16, fetch_texel_2d_f_l16, fetch_texel_3d_f_l16 }, { MESA_FORMAT_I8, fetch_texel_1d_f_i8, fetch_texel_2d_f_i8, fetch_texel_3d_f_i8 }, { MESA_FORMAT_I16, fetch_texel_1d_f_i16, fetch_texel_2d_f_i16, fetch_texel_3d_f_i16 }, { MESA_FORMAT_YCBCR, fetch_texel_1d_f_ycbcr, fetch_texel_2d_f_ycbcr, fetch_texel_3d_f_ycbcr }, { MESA_FORMAT_YCBCR_REV, fetch_texel_1d_f_ycbcr_rev, fetch_texel_2d_f_ycbcr_rev, fetch_texel_3d_f_ycbcr_rev }, { MESA_FORMAT_Z16, fetch_texel_1d_f_z16, fetch_texel_2d_f_z16, fetch_texel_3d_f_z16 }, { MESA_FORMAT_X8_Z24, fetch_texel_1d_f_s8_z24, fetch_texel_2d_f_s8_z24, fetch_texel_3d_f_s8_z24 }, { MESA_FORMAT_Z24_X8, fetch_texel_1d_f_z24_s8, fetch_texel_2d_f_z24_s8, fetch_texel_3d_f_z24_s8 }, { MESA_FORMAT_Z32, fetch_texel_1d_f_z32, fetch_texel_2d_f_z32, fetch_texel_3d_f_z32 }, { MESA_FORMAT_S8, NULL, NULL, NULL }, { MESA_FORMAT_ALPHA_UINT8, NULL, NULL, NULL }, { MESA_FORMAT_ALPHA_UINT16, NULL, NULL, NULL }, { MESA_FORMAT_ALPHA_UINT32, NULL, NULL, NULL }, { MESA_FORMAT_ALPHA_INT8, NULL, NULL, NULL }, { MESA_FORMAT_ALPHA_INT16, NULL, NULL, NULL }, { MESA_FORMAT_ALPHA_INT32, NULL, NULL, NULL }, { MESA_FORMAT_INTENSITY_UINT8, NULL, NULL, NULL }, { MESA_FORMAT_INTENSITY_UINT16, NULL, NULL, NULL }, { MESA_FORMAT_INTENSITY_UINT32, NULL, NULL, NULL }, { MESA_FORMAT_INTENSITY_INT8, NULL, NULL, NULL }, { MESA_FORMAT_INTENSITY_INT16, NULL, NULL, NULL }, { MESA_FORMAT_INTENSITY_INT32, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_UINT8, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_UINT16, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_UINT32, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_INT8, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_INT16, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_INT32, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_ALPHA_UINT8, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_ALPHA_UINT16, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_ALPHA_UINT32, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_ALPHA_INT8, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_ALPHA_INT16, NULL, NULL, NULL }, { MESA_FORMAT_LUMINANCE_ALPHA_INT32, NULL, NULL, NULL }, { MESA_FORMAT_RGB_INT8, NULL, NULL, NULL }, /* non-normalized, signed int */ { MESA_FORMAT_RGBA_INT8, fetch_texel_1d_rgba_int8, fetch_texel_2d_rgba_int8, fetch_texel_3d_rgba_int8 }, { MESA_FORMAT_RGB_INT16, NULL, NULL, NULL }, { MESA_FORMAT_RGBA_INT16, fetch_texel_1d_rgba_int16, fetch_texel_2d_rgba_int16, fetch_texel_3d_rgba_int16 }, { MESA_FORMAT_RGB_INT32, NULL, NULL, NULL }, { MESA_FORMAT_RGBA_INT32, fetch_texel_1d_rgba_int32, fetch_texel_2d_rgba_int32, fetch_texel_3d_rgba_int32 }, /* non-normalized, unsigned int */ { MESA_FORMAT_RGB_UINT8, NULL, NULL, NULL }, { MESA_FORMAT_RGBA_UINT8, fetch_texel_1d_rgba_uint8, fetch_texel_2d_rgba_uint8, fetch_texel_3d_rgba_uint8 }, { MESA_FORMAT_RGB_UINT16, NULL, NULL, NULL }, { MESA_FORMAT_RGBA_UINT16, fetch_texel_1d_rgba_uint16, fetch_texel_2d_rgba_uint16, fetch_texel_3d_rgba_uint16 }, { MESA_FORMAT_RGB_UINT32, NULL, NULL, NULL }, { MESA_FORMAT_RGBA_UINT32, fetch_texel_1d_rgba_uint32, fetch_texel_2d_rgba_uint32, fetch_texel_3d_rgba_uint32 }, /* signed, normalized */ { MESA_FORMAT_SIGNED_RGBA_16, fetch_texel_1d_signed_rgba_16, fetch_texel_2d_signed_rgba_16, fetch_texel_3d_signed_rgba_16 }, { MESA_FORMAT_RGBA_16, fetch_texel_1d_rgba_16, fetch_texel_2d_rgba_16, fetch_texel_3d_rgba_16 } }; FetchTexelFunc _mesa_get_texel_fetch_func(gl_format format, GLuint dims) { #ifdef DEBUG /* check that the table entries are sorted by format name */ gl_format fmt; for (fmt = 0; fmt < MESA_FORMAT_COUNT; fmt++) { assert(texfetch_funcs[fmt].Name == fmt); } #endif STATIC_ASSERT(Elements(texfetch_funcs) == MESA_FORMAT_COUNT); assert(format < MESA_FORMAT_COUNT); switch (dims) { case 1: return texfetch_funcs[format].Fetch1D; case 2: return texfetch_funcs[format].Fetch2D; case 3: return texfetch_funcs[format].Fetch3D; default: assert(0 && "bad dims in _mesa_get_texel_fetch_func"); return NULL; } } /** * Initialize the texture image's FetchTexel methods. */ static void set_fetch_functions(struct swrast_texture_image *texImage, GLuint dims) { gl_format format = texImage->Base.TexFormat; ASSERT(dims == 1 || dims == 2 || dims == 3); texImage->FetchTexel = _mesa_get_texel_fetch_func(format, dims); ASSERT(texImage->FetchTexel); } void _mesa_update_fetch_functions(struct gl_texture_object *texObj) { GLuint face, i; GLuint dims; dims = _mesa_get_texture_dimensions(texObj->Target); for (face = 0; face < 6; face++) { for (i = 0; i < MAX_TEXTURE_LEVELS; i++) { if (texObj->Image[face][i]) { set_fetch_functions(swrast_texture_image(texObj->Image[face][i]), dims); } } } }