0,0 → 1,627 |
/* |
* Mesa 3-D graphics library |
* |
* 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 |
* THE AUTHORS OR COPYRIGHT HOLDERS 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/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" |
#include "util/format_srgb.h" |
|
|
/* 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" |
|
|
/** |
* All compressed texture texel fetching is done though this function. |
* Basically just call a core-Mesa texel fetch function. |
*/ |
static void |
fetch_compressed(const struct swrast_texture_image *swImage, |
GLint i, GLint j, GLint k, GLfloat *texel) |
{ |
/* The FetchCompressedTexel function takes an integer pixel rowstride, |
* while the image's rowstride is bytes per row of blocks. |
*/ |
GLuint bw, bh; |
GLuint texelBytes = _mesa_get_format_bytes(swImage->Base.TexFormat); |
_mesa_get_format_block_size(swImage->Base.TexFormat, &bw, &bh); |
assert(swImage->RowStride * bw % texelBytes == 0); |
|
swImage->FetchCompressedTexel(swImage->ImageSlices[k], |
swImage->RowStride * bw / texelBytes, |
i, j, texel); |
} |
|
|
|
/** |
* 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!"); |
} |
|
|
#define FETCH_FUNCS(NAME) \ |
{ \ |
MESA_FORMAT_ ## NAME, \ |
fetch_texel_1d_ ## NAME, \ |
fetch_texel_2d_ ## NAME, \ |
fetch_texel_3d_ ## NAME, \ |
} |
|
#define FETCH_NULL(NAME) \ |
{ \ |
MESA_FORMAT_ ## NAME, \ |
NULL, \ |
NULL, \ |
NULL \ |
} |
|
/** |
* Table to map MESA_FORMAT_ to texel fetch/store funcs. |
*/ |
static struct { |
mesa_format Name; |
FetchTexelFunc Fetch1D; |
FetchTexelFunc Fetch2D; |
FetchTexelFunc Fetch3D; |
} |
texfetch_funcs[] = |
{ |
{ |
MESA_FORMAT_NONE, |
fetch_null_texelf, |
fetch_null_texelf, |
fetch_null_texelf |
}, |
|
/* Packed unorm formats */ |
FETCH_FUNCS(A8B8G8R8_UNORM), |
FETCH_FUNCS(X8B8G8R8_UNORM), |
FETCH_FUNCS(R8G8B8A8_UNORM), |
FETCH_FUNCS(R8G8B8X8_UNORM), |
FETCH_FUNCS(B8G8R8A8_UNORM), |
FETCH_FUNCS(B8G8R8X8_UNORM), |
FETCH_FUNCS(A8R8G8B8_UNORM), |
FETCH_FUNCS(X8R8G8B8_UNORM), |
FETCH_FUNCS(L16A16_UNORM), |
FETCH_FUNCS(A16L16_UNORM), |
FETCH_FUNCS(B5G6R5_UNORM), |
FETCH_FUNCS(R5G6B5_UNORM), |
FETCH_FUNCS(B4G4R4A4_UNORM), |
FETCH_NULL(B4G4R4X4_UNORM), |
FETCH_FUNCS(A4R4G4B4_UNORM), |
FETCH_FUNCS(A1B5G5R5_UNORM), |
FETCH_FUNCS(B5G5R5A1_UNORM), |
FETCH_NULL(B5G5R5X1_UNORM), |
FETCH_FUNCS(A1R5G5B5_UNORM), |
FETCH_FUNCS(L8A8_UNORM), |
FETCH_FUNCS(A8L8_UNORM), |
FETCH_FUNCS(R8G8_UNORM), |
FETCH_FUNCS(G8R8_UNORM), |
FETCH_FUNCS(L4A4_UNORM), |
FETCH_FUNCS(B2G3R3_UNORM), |
FETCH_FUNCS(R16G16_UNORM), |
FETCH_FUNCS(G16R16_UNORM), |
FETCH_FUNCS(B10G10R10A2_UNORM), |
FETCH_NULL(B10G10R10X2_UNORM), |
FETCH_FUNCS(R10G10B10A2_UNORM), |
FETCH_NULL(R10G10B10X2_UNORM), |
|
FETCH_FUNCS(S8_UINT_Z24_UNORM), |
{ |
MESA_FORMAT_X8_UINT_Z24_UNORM, |
fetch_texel_1d_S8_UINT_Z24_UNORM, |
fetch_texel_2d_S8_UINT_Z24_UNORM, |
fetch_texel_3d_S8_UINT_Z24_UNORM |
}, |
FETCH_FUNCS(Z24_UNORM_S8_UINT), |
{ |
MESA_FORMAT_Z24_UNORM_X8_UINT, |
fetch_texel_1d_Z24_UNORM_S8_UINT, |
fetch_texel_2d_Z24_UNORM_S8_UINT, |
fetch_texel_3d_Z24_UNORM_S8_UINT |
}, |
FETCH_NULL(R3G3B2_UNORM), |
FETCH_NULL(A4B4G4R4_UNORM), |
FETCH_NULL(R4G4B4A4_UNORM), |
FETCH_NULL(R5G5B5A1_UNORM), |
FETCH_NULL(A2B10G10R10_UNORM), |
FETCH_NULL(A2R10G10B10_UNORM), |
|
FETCH_FUNCS(YCBCR), |
FETCH_FUNCS(YCBCR_REV), |
|
/* Array unorm formats */ |
FETCH_FUNCS(A_UNORM8), |
FETCH_FUNCS(A_UNORM16), |
FETCH_FUNCS(L_UNORM8), |
FETCH_FUNCS(L_UNORM16), |
FETCH_FUNCS(I_UNORM8), |
FETCH_FUNCS(I_UNORM16), |
FETCH_FUNCS(R_UNORM8), |
FETCH_FUNCS(R_UNORM16), |
FETCH_FUNCS(BGR_UNORM8), |
FETCH_FUNCS(RGB_UNORM8), |
FETCH_FUNCS(RGBA_UNORM16), |
FETCH_FUNCS(RGBX_UNORM16), |
FETCH_FUNCS(Z_UNORM16), |
FETCH_FUNCS(Z_UNORM32), |
FETCH_NULL(S_UINT8), |
|
/* Packed signed/normalized formats */ |
FETCH_FUNCS(A8B8G8R8_SNORM), |
FETCH_FUNCS(X8B8G8R8_SNORM), |
FETCH_FUNCS(R8G8B8A8_SNORM), |
FETCH_NULL(R8G8B8X8_SNORM), |
FETCH_FUNCS(R16G16_SNORM), |
FETCH_NULL(G16R16_SNORM), |
FETCH_FUNCS(R8G8_SNORM), |
FETCH_NULL(G8R8_SNORM), |
FETCH_FUNCS(L8A8_SNORM), |
FETCH_FUNCS(A8L8_SNORM), |
|
/* Array signed/normalized formats */ |
FETCH_FUNCS(A_SNORM8), |
FETCH_FUNCS(A_SNORM16), |
FETCH_FUNCS(L_SNORM8), |
FETCH_FUNCS(L_SNORM16), |
FETCH_FUNCS(I_SNORM8), |
FETCH_FUNCS(I_SNORM16), |
FETCH_FUNCS(R_SNORM8), |
FETCH_FUNCS(R_SNORM16), |
FETCH_FUNCS(LA_SNORM16), |
FETCH_FUNCS(RGB_SNORM16), |
FETCH_FUNCS(RGBA_SNORM16), |
FETCH_NULL(RGBX_SNORM16), |
|
/* Packed sRGB formats */ |
FETCH_FUNCS(A8B8G8R8_SRGB), |
FETCH_FUNCS(B8G8R8A8_SRGB), |
FETCH_FUNCS(A8R8G8B8_SRGB), |
FETCH_NULL(B8G8R8X8_SRGB), |
FETCH_NULL(X8R8G8B8_SRGB), |
FETCH_FUNCS(R8G8B8A8_SRGB), |
FETCH_FUNCS(R8G8B8X8_SRGB), |
FETCH_FUNCS(X8B8G8R8_SRGB), |
FETCH_FUNCS(L8A8_SRGB), |
FETCH_FUNCS(A8L8_SRGB), |
|
/* Array sRGB formats */ |
FETCH_FUNCS(L_SRGB8), |
FETCH_FUNCS(BGR_SRGB8), |
|
/* Packed float formats */ |
FETCH_FUNCS(R9G9B9E5_FLOAT), |
FETCH_FUNCS(R11G11B10_FLOAT), |
FETCH_FUNCS(Z32_FLOAT_S8X24_UINT), |
|
/* Array float formats */ |
FETCH_FUNCS(A_FLOAT16), |
FETCH_FUNCS(A_FLOAT32), |
FETCH_FUNCS(L_FLOAT16), |
FETCH_FUNCS(L_FLOAT32), |
FETCH_FUNCS(LA_FLOAT16), |
FETCH_FUNCS(LA_FLOAT32), |
FETCH_FUNCS(I_FLOAT16), |
FETCH_FUNCS(I_FLOAT32), |
FETCH_FUNCS(R_FLOAT16), |
FETCH_FUNCS(R_FLOAT32), |
FETCH_FUNCS(RG_FLOAT16), |
FETCH_FUNCS(RG_FLOAT32), |
FETCH_FUNCS(RGB_FLOAT16), |
FETCH_FUNCS(RGB_FLOAT32), |
FETCH_FUNCS(RGBA_FLOAT16), |
FETCH_FUNCS(RGBA_FLOAT32), |
FETCH_FUNCS(RGBX_FLOAT16), |
FETCH_FUNCS(RGBX_FLOAT32), |
{ |
MESA_FORMAT_Z_FLOAT32, |
fetch_texel_1d_R_FLOAT32, /* Reuse the R32F functions. */ |
fetch_texel_2d_R_FLOAT32, |
fetch_texel_3d_R_FLOAT32 |
}, |
|
/* Packed signed/unsigned non-normalized integer formats */ |
FETCH_NULL(B10G10R10A2_UINT), |
FETCH_NULL(R10G10B10A2_UINT), |
FETCH_NULL(A2B10G10R10_UINT), |
FETCH_NULL(A2R10G10B10_UINT), |
|
/* Array signed/unsigned non-normalized integer formats */ |
FETCH_NULL(A_UINT8), |
FETCH_NULL(A_UINT16), |
FETCH_NULL(A_UINT32), |
FETCH_NULL(A_SINT8), |
FETCH_NULL(A_SINT16), |
FETCH_NULL(A_SINT32), |
FETCH_NULL(I_UINT8), |
FETCH_NULL(I_UINT16), |
FETCH_NULL(I_UINT32), |
FETCH_NULL(I_SINT8), |
FETCH_NULL(I_SINT16), |
FETCH_NULL(I_SINT32), |
FETCH_NULL(L_UINT8), |
FETCH_NULL(L_UINT16), |
FETCH_NULL(L_UINT32), |
FETCH_NULL(L_SINT8), |
FETCH_NULL(L_SINT16), |
FETCH_NULL(L_SINT32), |
FETCH_NULL(LA_UINT8), |
FETCH_NULL(LA_UINT16), |
FETCH_NULL(LA_UINT32), |
FETCH_NULL(LA_SINT8), |
FETCH_NULL(LA_SINT16), |
FETCH_NULL(LA_SINT32), |
FETCH_NULL(R_UINT8), |
FETCH_NULL(R_UINT16), |
FETCH_NULL(R_UINT32), |
FETCH_NULL(R_SINT8), |
FETCH_NULL(R_SINT16), |
FETCH_NULL(R_SINT32), |
FETCH_NULL(RG_UINT8), |
FETCH_NULL(RG_UINT16), |
FETCH_NULL(RG_UINT32), |
FETCH_NULL(RG_SINT8), |
FETCH_NULL(RG_SINT16), |
FETCH_NULL(RG_SINT32), |
FETCH_NULL(RGB_UINT8), |
FETCH_NULL(RGB_UINT16), |
FETCH_NULL(RGB_UINT32), |
FETCH_NULL(RGB_SINT8), |
FETCH_NULL(RGB_SINT16), |
FETCH_NULL(RGB_SINT32), |
FETCH_FUNCS(RGBA_UINT8), |
FETCH_FUNCS(RGBA_UINT16), |
FETCH_FUNCS(RGBA_UINT32), |
FETCH_FUNCS(RGBA_SINT8), |
FETCH_FUNCS(RGBA_SINT16), |
FETCH_FUNCS(RGBA_SINT32), |
FETCH_NULL(RGBX_UINT8), |
FETCH_NULL(RGBX_UINT16), |
FETCH_NULL(RGBX_UINT32), |
FETCH_NULL(RGBX_SINT8), |
FETCH_NULL(RGBX_SINT16), |
FETCH_NULL(RGBX_SINT32), |
|
/* DXT compressed formats */ |
{ |
MESA_FORMAT_RGB_DXT1, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_RGBA_DXT1, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_RGBA_DXT3, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_RGBA_DXT5, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
|
/* DXT sRGB compressed formats */ |
{ |
MESA_FORMAT_SRGB_DXT1, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_SRGBA_DXT1, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_SRGBA_DXT3, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_SRGBA_DXT5, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
|
/* FXT1 compressed formats */ |
{ |
MESA_FORMAT_RGB_FXT1, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_RGBA_FXT1, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
|
/* RGTC compressed formats */ |
{ |
MESA_FORMAT_R_RGTC1_UNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_R_RGTC1_SNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_RG_RGTC2_UNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_RG_RGTC2_SNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
|
/* LATC1/2 compressed formats */ |
{ |
MESA_FORMAT_L_LATC1_UNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_L_LATC1_SNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_LA_LATC2_UNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_LA_LATC2_SNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
|
/* ETC1/2 compressed formats */ |
{ |
MESA_FORMAT_ETC1_RGB8, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_RGB8, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_SRGB8, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_RGBA8_EAC, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_R11_EAC, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_RG11_EAC, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_SIGNED_R11_EAC, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_SIGNED_RG11_EAC, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_BPTC_RGBA_UNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
}, |
{ |
MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT, |
fetch_compressed, |
fetch_compressed, |
fetch_compressed |
} |
}; |
|
|
/** |
* Initialize the texture image's FetchTexel methods. |
*/ |
static void |
set_fetch_functions(const struct gl_sampler_object *samp, |
struct swrast_texture_image *texImage, GLuint dims) |
{ |
mesa_format format = texImage->Base.TexFormat; |
|
#ifdef DEBUG |
/* check that the table entries are sorted by format name */ |
mesa_format fmt; |
for (fmt = 0; fmt < MESA_FORMAT_COUNT; fmt++) { |
assert(texfetch_funcs[fmt].Name == fmt); |
} |
#endif |
|
STATIC_ASSERT(ARRAY_SIZE(texfetch_funcs) == MESA_FORMAT_COUNT); |
|
if (samp->sRGBDecode == GL_SKIP_DECODE_EXT && |
_mesa_get_format_color_encoding(format) == GL_SRGB) { |
format = _mesa_get_srgb_format_linear(format); |
} |
|
assert(format < MESA_FORMAT_COUNT); |
|
switch (dims) { |
case 1: |
texImage->FetchTexel = texfetch_funcs[format].Fetch1D; |
break; |
case 2: |
texImage->FetchTexel = texfetch_funcs[format].Fetch2D; |
break; |
case 3: |
texImage->FetchTexel = texfetch_funcs[format].Fetch3D; |
break; |
default: |
assert(!"Bad dims in set_fetch_functions()"); |
} |
|
texImage->FetchCompressedTexel = _mesa_get_compressed_fetch_func(format); |
|
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); |
} |
} |
} |
} |