/* * 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 "main/colormac.h" #include "main/macros.h" #include "main/texcompress.h" #include "main/texcompress_fxt1.h" #include "main/texcompress_s3tc.h" #include "main/texcompress_rgtc.h" #include "main/texcompress_etc.h" #include "main/teximage.h" #include "main/samplerobj.h" #include "s_context.h" #include "s_texfetch.h" #include "../../gallium/auxiliary/util/u_format_rgb9e5.h" #include "../../gallium/auxiliary/util/u_format_r11g11b10f.h" /** * Convert an 8-bit sRGB value from non-linear space to a * linear RGB value in [0, 1]. * Implemented with a 256-entry lookup table. */ static inline GLfloat nonlinear_to_linear(GLubyte cs8) { static GLfloat table[256]; static GLboolean tableReady = GL_FALSE; if (!tableReady) { /* compute lookup table now */ GLuint i; for (i = 0; i < 256; i++) { const GLfloat cs = UBYTE_TO_FLOAT(i); if (cs <= 0.04045) { table[i] = cs / 12.92f; } else { table[i] = (GLfloat) pow((cs + 0.055) / 1.055, 2.4); } } tableReady = GL_TRUE; } return table[cs8]; } /* 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_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_R8, fetch_texel_1d_f_r8, fetch_texel_2d_f_r8, fetch_texel_3d_f_r8 }, { MESA_FORMAT_GR88, fetch_texel_1d_f_gr88, fetch_texel_2d_f_gr88, fetch_texel_3d_f_gr88 }, { MESA_FORMAT_RG88, fetch_texel_1d_f_rg88, fetch_texel_2d_f_rg88, fetch_texel_3d_f_rg88 }, { MESA_FORMAT_R16, fetch_texel_1d_f_r16, fetch_texel_2d_f_r16, fetch_texel_3d_f_r16 }, { MESA_FORMAT_RG1616, fetch_texel_1d_f_rg1616, fetch_texel_2d_f_rg1616, fetch_texel_3d_f_rg1616 }, { MESA_FORMAT_RG1616_REV, fetch_texel_1d_f_rg1616_rev, fetch_texel_2d_f_rg1616_rev, fetch_texel_3d_f_rg1616_rev }, { MESA_FORMAT_ARGB2101010, fetch_texel_1d_f_argb2101010, fetch_texel_2d_f_argb2101010, fetch_texel_3d_f_argb2101010 }, { MESA_FORMAT_Z24_S8, fetch_texel_1d_f_z24_s8, fetch_texel_2d_f_z24_s8, fetch_texel_3d_f_z24_s8 }, { MESA_FORMAT_S8_Z24, fetch_texel_1d_f_s8_z24, fetch_texel_2d_f_s8_z24, fetch_texel_3d_f_s8_z24 }, { 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_SRGB8, fetch_texel_1d_srgb8, fetch_texel_2d_srgb8, fetch_texel_3d_srgb8 }, { MESA_FORMAT_SRGBA8, fetch_texel_1d_srgba8, fetch_texel_2d_srgba8, fetch_texel_3d_srgba8 }, { MESA_FORMAT_SARGB8, fetch_texel_1d_sargb8, fetch_texel_2d_sargb8, fetch_texel_3d_sargb8 }, { MESA_FORMAT_SL8, fetch_texel_1d_sl8, fetch_texel_2d_sl8, fetch_texel_3d_sl8 }, { MESA_FORMAT_SLA8, fetch_texel_1d_sla8, fetch_texel_2d_sla8, fetch_texel_3d_sla8 }, { MESA_FORMAT_SRGB_DXT1, _mesa_fetch_texel_srgb_dxt1, _mesa_fetch_texel_srgb_dxt1, _mesa_fetch_texel_srgb_dxt1 }, { MESA_FORMAT_SRGBA_DXT1, _mesa_fetch_texel_srgba_dxt1, _mesa_fetch_texel_srgba_dxt1, _mesa_fetch_texel_srgba_dxt1 }, { MESA_FORMAT_SRGBA_DXT3, _mesa_fetch_texel_srgba_dxt3, _mesa_fetch_texel_srgba_dxt3, _mesa_fetch_texel_srgba_dxt3 }, { MESA_FORMAT_SRGBA_DXT5, _mesa_fetch_texel_srgba_dxt5, _mesa_fetch_texel_srgba_dxt5, _mesa_fetch_texel_srgba_dxt5 }, { MESA_FORMAT_RGB_FXT1, NULL, _mesa_fetch_texel_2d_f_rgb_fxt1, NULL }, { MESA_FORMAT_RGBA_FXT1, NULL, _mesa_fetch_texel_2d_f_rgba_fxt1, NULL }, { MESA_FORMAT_RGB_DXT1, _mesa_fetch_texel_rgb_dxt1, _mesa_fetch_texel_rgb_dxt1, _mesa_fetch_texel_rgb_dxt1 }, { MESA_FORMAT_RGBA_DXT1, _mesa_fetch_texel_rgba_dxt1, _mesa_fetch_texel_rgba_dxt1, _mesa_fetch_texel_rgba_dxt1 }, { MESA_FORMAT_RGBA_DXT3, _mesa_fetch_texel_rgba_dxt3, _mesa_fetch_texel_rgba_dxt3, _mesa_fetch_texel_rgba_dxt3 }, { MESA_FORMAT_RGBA_DXT5, _mesa_fetch_texel_rgba_dxt5, _mesa_fetch_texel_rgba_dxt5, _mesa_fetch_texel_rgba_dxt5 }, { MESA_FORMAT_RGBA_FLOAT32, fetch_texel_1d_f_rgba_f32, fetch_texel_2d_f_rgba_f32, fetch_texel_3d_f_rgba_f32 }, { MESA_FORMAT_RGBA_FLOAT16, fetch_texel_1d_f_rgba_f16, fetch_texel_2d_f_rgba_f16, fetch_texel_3d_f_rgba_f16 }, { MESA_FORMAT_RGB_FLOAT32, fetch_texel_1d_f_rgb_f32, fetch_texel_2d_f_rgb_f32, fetch_texel_3d_f_rgb_f32 }, { MESA_FORMAT_RGB_FLOAT16, fetch_texel_1d_f_rgb_f16, fetch_texel_2d_f_rgb_f16, fetch_texel_3d_f_rgb_f16 }, { MESA_FORMAT_ALPHA_FLOAT32, fetch_texel_1d_f_alpha_f32, fetch_texel_2d_f_alpha_f32, fetch_texel_3d_f_alpha_f32 }, { MESA_FORMAT_ALPHA_FLOAT16, fetch_texel_1d_f_alpha_f16, fetch_texel_2d_f_alpha_f16, fetch_texel_3d_f_alpha_f16 }, { MESA_FORMAT_LUMINANCE_FLOAT32, fetch_texel_1d_f_luminance_f32, fetch_texel_2d_f_luminance_f32, fetch_texel_3d_f_luminance_f32 }, { MESA_FORMAT_LUMINANCE_FLOAT16, fetch_texel_1d_f_luminance_f16, fetch_texel_2d_f_luminance_f16, fetch_texel_3d_f_luminance_f16 }, { MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32, fetch_texel_1d_f_luminance_alpha_f32, fetch_texel_2d_f_luminance_alpha_f32, fetch_texel_3d_f_luminance_alpha_f32 }, { MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, fetch_texel_1d_f_luminance_alpha_f16, fetch_texel_2d_f_luminance_alpha_f16, fetch_texel_3d_f_luminance_alpha_f16 }, { MESA_FORMAT_INTENSITY_FLOAT32, fetch_texel_1d_f_intensity_f32, fetch_texel_2d_f_intensity_f32, fetch_texel_3d_f_intensity_f32 }, { MESA_FORMAT_INTENSITY_FLOAT16, fetch_texel_1d_f_intensity_f16, fetch_texel_2d_f_intensity_f16, fetch_texel_3d_f_intensity_f16 }, { MESA_FORMAT_R_FLOAT32, fetch_texel_1d_f_r_f32, fetch_texel_2d_f_r_f32, fetch_texel_3d_f_r_f32 }, { MESA_FORMAT_R_FLOAT16, fetch_texel_1d_f_r_f16, fetch_texel_2d_f_r_f16, fetch_texel_3d_f_r_f16 }, { MESA_FORMAT_RG_FLOAT32, fetch_texel_1d_f_rg_f32, fetch_texel_2d_f_rg_f32, fetch_texel_3d_f_rg_f32 }, { MESA_FORMAT_RG_FLOAT16, fetch_texel_1d_f_rg_f16, fetch_texel_2d_f_rg_f16, fetch_texel_3d_f_rg_f16 }, { 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_R_INT8, NULL, NULL, NULL }, { MESA_FORMAT_RG_INT8, 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_R_INT16, NULL, NULL, NULL }, { MESA_FORMAT_RG_INT16, NULL, NULL, NULL }, { 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_R_INT32, NULL, NULL, NULL }, { MESA_FORMAT_RG_INT32, NULL, NULL, NULL }, { 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_R_UINT8, NULL, NULL, NULL }, { MESA_FORMAT_RG_UINT8, NULL, NULL, NULL }, { 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_R_UINT16, NULL, NULL, NULL }, { MESA_FORMAT_RG_UINT16, NULL, NULL, NULL }, { 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_R_UINT32, NULL, NULL, NULL }, { MESA_FORMAT_RG_UINT32, NULL, NULL, NULL }, { 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 }, /* dudv */ { MESA_FORMAT_DUDV8, fetch_texel_1d_dudv8, fetch_texel_2d_dudv8, fetch_texel_3d_dudv8 }, /* signed, normalized */ { MESA_FORMAT_SIGNED_R8, fetch_texel_1d_signed_r8, fetch_texel_2d_signed_r8, fetch_texel_3d_signed_r8 }, { MESA_FORMAT_SIGNED_RG88_REV, fetch_texel_1d_signed_rg88_rev, fetch_texel_2d_signed_rg88_rev, fetch_texel_3d_signed_rg88_rev }, { MESA_FORMAT_SIGNED_RGBX8888, fetch_texel_1d_signed_rgbx8888, fetch_texel_2d_signed_rgbx8888, fetch_texel_3d_signed_rgbx8888 }, { MESA_FORMAT_SIGNED_RGBA8888, fetch_texel_1d_signed_rgba8888, fetch_texel_2d_signed_rgba8888, fetch_texel_3d_signed_rgba8888 }, { MESA_FORMAT_SIGNED_RGBA8888_REV, fetch_texel_1d_signed_rgba8888_rev, fetch_texel_2d_signed_rgba8888_rev, fetch_texel_3d_signed_rgba8888_rev }, { MESA_FORMAT_SIGNED_R16, fetch_texel_1d_signed_r16, fetch_texel_2d_signed_r16, fetch_texel_3d_signed_r16 }, { MESA_FORMAT_SIGNED_GR1616, fetch_texel_1d_signed_rg1616, fetch_texel_2d_signed_rg1616, fetch_texel_3d_signed_rg1616 }, { MESA_FORMAT_SIGNED_RGB_16, fetch_texel_1d_signed_rgb_16, fetch_texel_2d_signed_rgb_16, fetch_texel_3d_signed_rgb_16 }, { 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 }, { MESA_FORMAT_RED_RGTC1, _mesa_fetch_texel_red_rgtc1, _mesa_fetch_texel_red_rgtc1, _mesa_fetch_texel_red_rgtc1 }, { MESA_FORMAT_SIGNED_RED_RGTC1, _mesa_fetch_texel_signed_red_rgtc1, _mesa_fetch_texel_signed_red_rgtc1, _mesa_fetch_texel_signed_red_rgtc1 }, { MESA_FORMAT_RG_RGTC2, _mesa_fetch_texel_rg_rgtc2, _mesa_fetch_texel_rg_rgtc2, _mesa_fetch_texel_rg_rgtc2 }, { MESA_FORMAT_SIGNED_RG_RGTC2, _mesa_fetch_texel_signed_rg_rgtc2, _mesa_fetch_texel_signed_rg_rgtc2, _mesa_fetch_texel_signed_rg_rgtc2 }, { MESA_FORMAT_L_LATC1, _mesa_fetch_texel_l_latc1, _mesa_fetch_texel_l_latc1, _mesa_fetch_texel_l_latc1 }, { MESA_FORMAT_SIGNED_L_LATC1, _mesa_fetch_texel_signed_l_latc1, _mesa_fetch_texel_signed_l_latc1, _mesa_fetch_texel_signed_l_latc1 }, { MESA_FORMAT_LA_LATC2, _mesa_fetch_texel_la_latc2, _mesa_fetch_texel_la_latc2, _mesa_fetch_texel_la_latc2 }, { MESA_FORMAT_SIGNED_LA_LATC2, _mesa_fetch_texel_signed_la_latc2, _mesa_fetch_texel_signed_la_latc2, _mesa_fetch_texel_signed_la_latc2 }, { MESA_FORMAT_ETC1_RGB8, NULL, _mesa_fetch_texel_2d_f_etc1_rgb8, NULL }, { MESA_FORMAT_ETC2_RGB8, NULL, _mesa_fetch_texel_2d_f_etc2_rgb8, NULL }, { MESA_FORMAT_ETC2_SRGB8, NULL, _mesa_fetch_texel_2d_f_etc2_srgb8, NULL }, { MESA_FORMAT_ETC2_RGBA8_EAC, NULL, _mesa_fetch_texel_2d_f_etc2_rgba8_eac, NULL }, { MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC, NULL, _mesa_fetch_texel_2d_f_etc2_srgb8_alpha8_eac, NULL }, { MESA_FORMAT_ETC2_R11_EAC, NULL, _mesa_fetch_texel_2d_f_etc2_r11_eac, NULL }, { MESA_FORMAT_ETC2_RG11_EAC, NULL, _mesa_fetch_texel_2d_f_etc2_rg11_eac, NULL }, { MESA_FORMAT_ETC2_SIGNED_R11_EAC, NULL, _mesa_fetch_texel_2d_f_etc2_signed_r11_eac, NULL }, { MESA_FORMAT_ETC2_SIGNED_RG11_EAC, NULL, _mesa_fetch_texel_2d_f_etc2_signed_rg11_eac, NULL }, { MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1, NULL, NULL /* _mesa_fetch_texel_2d_f_etc2_rgb8_punchthrough_alpha1 -- not implemented yet */, NULL }, { MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1, NULL, NULL /* _mesa_fetch_texel_2d_f_etc2_srgb8_punchthrough_alpha1 -- not implemented yet */, NULL }, { MESA_FORMAT_SIGNED_A8, fetch_texel_1d_signed_a8, fetch_texel_2d_signed_a8, fetch_texel_3d_signed_a8 }, { MESA_FORMAT_SIGNED_L8, fetch_texel_1d_signed_l8, fetch_texel_2d_signed_l8, fetch_texel_3d_signed_l8 }, { MESA_FORMAT_SIGNED_AL88, fetch_texel_1d_signed_al88, fetch_texel_2d_signed_al88, fetch_texel_3d_signed_al88 }, { MESA_FORMAT_SIGNED_I8, fetch_texel_1d_signed_i8, fetch_texel_2d_signed_i8, fetch_texel_3d_signed_i8 }, { MESA_FORMAT_SIGNED_A16, fetch_texel_1d_signed_a16, fetch_texel_2d_signed_a16, fetch_texel_3d_signed_a16 }, { MESA_FORMAT_SIGNED_L16, fetch_texel_1d_signed_l16, fetch_texel_2d_signed_l16, fetch_texel_3d_signed_l16 }, { MESA_FORMAT_SIGNED_AL1616, fetch_texel_1d_signed_al1616, fetch_texel_2d_signed_al1616, fetch_texel_3d_signed_al1616 }, { MESA_FORMAT_SIGNED_I16, fetch_texel_1d_signed_i16, fetch_texel_2d_signed_i16, fetch_texel_3d_signed_i16 }, { MESA_FORMAT_RGB9_E5_FLOAT, fetch_texel_1d_rgb9_e5, fetch_texel_2d_rgb9_e5, fetch_texel_3d_rgb9_e5 }, { MESA_FORMAT_R11_G11_B10_FLOAT, fetch_texel_1d_r11_g11_b10f, fetch_texel_2d_r11_g11_b10f, fetch_texel_3d_r11_g11_b10f }, { MESA_FORMAT_Z32_FLOAT, fetch_texel_1d_f_r_f32, /* Reuse the R32F functions. */ fetch_texel_2d_f_r_f32, fetch_texel_3d_f_r_f32 }, { MESA_FORMAT_Z32_FLOAT_X24S8, fetch_texel_1d_z32f_x24s8, fetch_texel_2d_z32f_x24s8, fetch_texel_3d_z32f_x24s8 }, { MESA_FORMAT_ARGB2101010_UINT, NULL, NULL, NULL }, { MESA_FORMAT_ABGR2101010_UINT, NULL, NULL, NULL }, }; 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 gl_sampler_object *samp, struct swrast_texture_image *texImage, GLuint dims) { gl_format format = texImage->Base.TexFormat; ASSERT(dims == 1 || dims == 2 || dims == 3); if (samp->sRGBDecode == GL_SKIP_DECODE_EXT && _mesa_get_format_color_encoding(format) == GL_SRGB) { format = _mesa_get_srgb_format_linear(format); } texImage->FetchTexel = _mesa_get_texel_fetch_func(format, dims); ASSERT(texImage->FetchTexel); } void _mesa_update_fetch_functions(struct gl_context *ctx, GLuint unit) { struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; struct gl_sampler_object *samp; GLuint face, i; GLuint dims; if (!texObj) return; samp = _mesa_get_samplerobj(ctx, unit); 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(samp, swrast_texture_image(texObj->Image[face][i]), dims); } } } }