/************************************************************************** * * Copyright 2007 VMware, Inc. * Copyright (c) 2008-2010 VMware, Inc. * 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, sub license, 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 (including the * next paragraph) 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 NON-INFRINGEMENT. * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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. * **************************************************************************/ /** * Mesa / Gallium format conversion and format selection code. * \author Brian Paul */ #include "main/imports.h" #include "main/context.h" #include "main/enums.h" #include "main/formats.h" #include "main/glformats.h" #include "main/texcompress.h" #include "main/texgetimage.h" #include "main/teximage.h" #include "main/texstore.h" #include "main/image.h" #include "main/macros.h" #include "main/formatquery.h" #include "pipe/p_context.h" #include "pipe/p_defines.h" #include "pipe/p_screen.h" #include "util/format/u_format.h" #include "st_cb_texture.h" #include "st_context.h" #include "st_format.h" #include "st_texture.h" /** * Translate Mesa format to Gallium format. */ enum pipe_format st_mesa_format_to_pipe_format(const struct st_context *st, mesa_format mesaFormat) { struct pipe_screen *screen = st->pipe->screen; /* The destination RGBA format mustn't be changed, because it's also * a destination format of the unpack/decompression function. */ if (mesaFormat == MESA_FORMAT_ETC1_RGB8 && !st->has_etc1) return PIPE_FORMAT_R8G8B8A8_UNORM; /* ETC2 formats are emulated as uncompressed ones. * The destination formats mustn't be changed, because they are also * destination formats of the unpack/decompression function. */ if (_mesa_is_format_etc2(mesaFormat) && !st->has_etc2) { bool has_bgra_srgb = screen->is_format_supported(screen, PIPE_FORMAT_B8G8R8A8_SRGB, PIPE_TEXTURE_2D, 0, 0, PIPE_BIND_SAMPLER_VIEW); switch (mesaFormat) { case MESA_FORMAT_ETC2_RGB8: return PIPE_FORMAT_R8G8B8A8_UNORM; case MESA_FORMAT_ETC2_SRGB8: return has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB; case MESA_FORMAT_ETC2_RGBA8_EAC: return PIPE_FORMAT_R8G8B8A8_UNORM; case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC: return has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB; case MESA_FORMAT_ETC2_R11_EAC: return PIPE_FORMAT_R16_UNORM; case MESA_FORMAT_ETC2_RG11_EAC: return PIPE_FORMAT_R16G16_UNORM; case MESA_FORMAT_ETC2_SIGNED_R11_EAC: return PIPE_FORMAT_R16_SNORM; case MESA_FORMAT_ETC2_SIGNED_RG11_EAC: return PIPE_FORMAT_R16G16_SNORM; case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1: return PIPE_FORMAT_R8G8B8A8_UNORM; case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1: return has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB; default: unreachable("Unknown ETC2 format"); } } if (_mesa_is_format_astc_2d(mesaFormat) && !st->has_astc_2d_ldr) { if (_mesa_is_format_srgb(mesaFormat)) return PIPE_FORMAT_R8G8B8A8_SRGB; else return PIPE_FORMAT_R8G8B8A8_UNORM; } return mesaFormat; } /** * Translate Gallium format to Mesa format. */ mesa_format st_pipe_format_to_mesa_format(enum pipe_format format) { mesa_format mf = format; if (!_mesa_get_format_name(mf)) return MESA_FORMAT_NONE; return mf; } /** * Map GL texture formats to Gallium pipe formats. */ struct format_mapping { GLenum glFormats[18]; /**< list of GLenum formats, 0-terminated */ enum pipe_format pipeFormats[14]; /**< list of pipe formats, 0-terminated */ }; #define DEFAULT_RGBA_FORMATS \ PIPE_FORMAT_R8G8B8A8_UNORM, \ PIPE_FORMAT_B8G8R8A8_UNORM, \ PIPE_FORMAT_A8R8G8B8_UNORM, \ PIPE_FORMAT_A8B8G8R8_UNORM, \ 0 #define DEFAULT_RGB_FORMATS \ PIPE_FORMAT_R8G8B8X8_UNORM, \ PIPE_FORMAT_B8G8R8X8_UNORM, \ PIPE_FORMAT_X8R8G8B8_UNORM, \ PIPE_FORMAT_X8B8G8R8_UNORM, \ PIPE_FORMAT_B5G6R5_UNORM, \ DEFAULT_RGBA_FORMATS #define DEFAULT_SRGBA_FORMATS \ PIPE_FORMAT_R8G8B8A8_SRGB, \ PIPE_FORMAT_B8G8R8A8_SRGB, \ PIPE_FORMAT_A8R8G8B8_SRGB, \ PIPE_FORMAT_A8B8G8R8_SRGB, \ 0 #define DEFAULT_DEPTH_FORMATS \ PIPE_FORMAT_Z24X8_UNORM, \ PIPE_FORMAT_X8Z24_UNORM, \ PIPE_FORMAT_Z16_UNORM, \ PIPE_FORMAT_Z24_UNORM_S8_UINT, \ PIPE_FORMAT_S8_UINT_Z24_UNORM, \ 0 #define DEFAULT_SNORM8_RGBA_FORMATS \ PIPE_FORMAT_R8G8B8A8_SNORM, \ 0 #define DEFAULT_UNORM16_RGBA_FORMATS \ PIPE_FORMAT_R16G16B16A16_UNORM, \ DEFAULT_RGBA_FORMATS /** * This table maps OpenGL texture format enums to Gallium pipe_format enums. * Multiple GL enums might map to multiple pipe_formats. * The first pipe format in the list that's supported is the one that's chosen. */ static const struct format_mapping format_map[] = { /* Basic RGB, RGBA formats */ { { GL_RGB10, 0 }, { PIPE_FORMAT_R10G10B10X2_UNORM, PIPE_FORMAT_B10G10R10X2_UNORM, PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM, DEFAULT_RGB_FORMATS } }, { { GL_RGB10_A2, 0 }, { PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM, DEFAULT_RGBA_FORMATS } }, { { 4, GL_RGBA, GL_RGBA8, 0 }, { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_BGRA, 0 }, { DEFAULT_RGBA_FORMATS } }, { { 3, GL_RGB, GL_RGB8, 0 }, { PIPE_FORMAT_R8G8B8X8_UNORM, DEFAULT_RGB_FORMATS } }, { { GL_RGB12, GL_RGB16, 0 }, { PIPE_FORMAT_R16G16B16X16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGB_FORMATS } }, { { GL_RGBA12, GL_RGBA16, 0 }, { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_RGBA4, GL_RGBA2, 0 }, { PIPE_FORMAT_B4G4R4A4_UNORM, PIPE_FORMAT_A4B4G4R4_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_RGB5_A1, 0 }, { PIPE_FORMAT_B5G5R5A1_UNORM, PIPE_FORMAT_A1B5G5R5_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_R3_G3_B2, 0 }, { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGB_FORMATS } }, { { GL_RGB4 }, { PIPE_FORMAT_B4G4R4X4_UNORM, PIPE_FORMAT_B4G4R4A4_UNORM, PIPE_FORMAT_A4B4G4R4_UNORM, DEFAULT_RGB_FORMATS } }, { { GL_RGB5 }, { PIPE_FORMAT_B5G5R5X1_UNORM, PIPE_FORMAT_X1B5G5R5_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM, PIPE_FORMAT_A1B5G5R5_UNORM, DEFAULT_RGB_FORMATS } }, { { GL_RGB565 }, { PIPE_FORMAT_B5G6R5_UNORM, DEFAULT_RGB_FORMATS } }, /* basic Alpha formats */ { { GL_ALPHA12, GL_ALPHA16, 0 }, { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM, PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 }, { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS } }, /* basic Luminance formats */ { { GL_LUMINANCE12, GL_LUMINANCE16, 0 }, { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS } }, { { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 }, { PIPE_FORMAT_L8_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGB_FORMATS } }, /* basic Luminance/Alpha formats */ { { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12, GL_LUMINANCE16_ALPHA16, 0}, { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS } }, { { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 }, { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_LUMINANCE4_ALPHA4, 0 }, { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS } }, /* basic Intensity formats */ { { GL_INTENSITY12, GL_INTENSITY16, 0 }, { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8, GL_COMPRESSED_INTENSITY, 0 }, { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS } }, /* YCbCr */ { { GL_YCBCR_MESA, 0 }, { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 } }, /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */ { { GL_COMPRESSED_RGB, 0 }, { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS } }, { { GL_COMPRESSED_RGBA, 0 }, { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS } }, { { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 }, { PIPE_FORMAT_DXT1_RGB, 0 } }, { { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 }, { PIPE_FORMAT_DXT1_RGBA, 0 } }, { { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 }, { PIPE_FORMAT_DXT3_RGBA, 0 } }, { { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 }, { PIPE_FORMAT_DXT5_RGBA, 0 } }, #if 0 { { GL_COMPRESSED_RGB_FXT1_3DFX, 0 }, { PIPE_FORMAT_RGB_FXT1, 0 } }, { { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 }, { PIPE_FORMAT_RGBA_FXT1, 0 } }, #endif /* Depth formats */ { { GL_DEPTH_COMPONENT16, 0 }, { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS } }, { { GL_DEPTH_COMPONENT24, 0 }, { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM, DEFAULT_DEPTH_FORMATS } }, { { GL_DEPTH_COMPONENT32, 0 }, { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS } }, { { GL_DEPTH_COMPONENT, 0 }, { DEFAULT_DEPTH_FORMATS } }, { { GL_DEPTH_COMPONENT32F, 0 }, { PIPE_FORMAT_Z32_FLOAT, 0 } }, /* stencil formats */ { { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT, GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 }, { PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 } }, /* Depth / Stencil formats */ { { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 }, { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 } }, { { GL_DEPTH32F_STENCIL8, 0 }, { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 } }, /* sRGB formats */ { { GL_SRGB_EXT, GL_SRGB8_EXT, 0 }, { PIPE_FORMAT_R8G8B8X8_SRGB, PIPE_FORMAT_B8G8R8X8_SRGB, DEFAULT_SRGBA_FORMATS } }, { { GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 }, { PIPE_FORMAT_R8G8B8A8_SRGB, DEFAULT_SRGBA_FORMATS } }, { { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 }, { PIPE_FORMAT_DXT1_SRGB, PIPE_FORMAT_R8G8B8X8_SRGB, PIPE_FORMAT_B8G8R8X8_SRGB, DEFAULT_SRGBA_FORMATS } }, { { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 }, { PIPE_FORMAT_DXT1_SRGBA, 0 } }, { { GL_COMPRESSED_SRGB_ALPHA_EXT, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 }, { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS } }, { { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 }, { PIPE_FORMAT_DXT5_SRGBA, 0 } }, { { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT, GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 }, { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS } }, { { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, GL_COMPRESSED_SLUMINANCE_EXT, 0 }, { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS } }, { { GL_SR8_EXT, 0 }, { PIPE_FORMAT_R8_SRGB, 0 } }, /* 16-bit float formats */ { { GL_RGBA16F_ARB, 0 }, { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_RGB16F_ARB, 0 }, { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16X16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_LUMINANCE_ALPHA16F_ARB, 0 }, { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_ALPHA16F_ARB, 0 }, { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_INTENSITY16F_ARB, 0 }, { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_LUMINANCE16F_ARB, 0 }, { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_R16F, 0 }, { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_RG16F, 0 }, { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, /* 32-bit float formats */ { { GL_RGBA32F_ARB, 0 }, { PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_RGB32F_ARB, 0 }, { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32X32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_LUMINANCE_ALPHA32F_ARB, 0 }, { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_ALPHA32F_ARB, 0 }, { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_INTENSITY32F_ARB, 0 }, { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_LUMINANCE32F_ARB, 0 }, { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_R32F, 0 }, { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, { { GL_RG32F, 0 }, { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 } }, /* R, RG formats */ { { GL_RED, GL_R8, 0 }, { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_RG, GL_RG8, 0 }, { PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_R16, 0 }, { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS } }, { { GL_RG16, 0 }, { PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS } }, /* compressed R, RG formats */ { { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 }, { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 }, { PIPE_FORMAT_RGTC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS } }, { { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 }, { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 }, { PIPE_FORMAT_RGTC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS } }, { { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 }, { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 }, { PIPE_FORMAT_LATC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS } }, { { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT, GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 }, { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS } }, { { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 }, { PIPE_FORMAT_LATC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS } }, /* ETC1 */ { { GL_ETC1_RGB8_OES, 0 }, { PIPE_FORMAT_ETC1_RGB8, 0 } }, /* ETC2 */ { { GL_COMPRESSED_RGB8_ETC2, 0 }, { PIPE_FORMAT_ETC2_RGB8, 0 } }, { { GL_COMPRESSED_SRGB8_ETC2, 0 }, { PIPE_FORMAT_ETC2_SRGB8, 0 } }, { { GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, 0 }, { PIPE_FORMAT_ETC2_RGB8A1, 0 } }, { { GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, 0 }, { PIPE_FORMAT_ETC2_SRGB8A1, 0 } }, { { GL_COMPRESSED_RGBA8_ETC2_EAC, 0 }, { PIPE_FORMAT_ETC2_RGBA8, 0 } }, { { GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, 0 }, { PIPE_FORMAT_ETC2_SRGBA8, 0 } }, { { GL_COMPRESSED_R11_EAC, 0 }, { PIPE_FORMAT_ETC2_R11_UNORM, 0 } }, { { GL_COMPRESSED_SIGNED_R11_EAC, 0 }, { PIPE_FORMAT_ETC2_R11_SNORM, 0 } }, { { GL_COMPRESSED_RG11_EAC, 0 }, { PIPE_FORMAT_ETC2_RG11_UNORM, 0 } }, { { GL_COMPRESSED_SIGNED_RG11_EAC, 0 }, { PIPE_FORMAT_ETC2_RG11_SNORM, 0 } }, /* BPTC */ { { GL_COMPRESSED_RGBA_BPTC_UNORM, 0 }, { PIPE_FORMAT_BPTC_RGBA_UNORM, 0 }, }, { { GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM, 0 }, { PIPE_FORMAT_BPTC_SRGBA, 0 }, }, { { GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT, 0 }, { PIPE_FORMAT_BPTC_RGB_FLOAT, 0 }, }, { { GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT, 0 }, { PIPE_FORMAT_BPTC_RGB_UFLOAT, 0 }, }, /* ASTC */ { { GL_COMPRESSED_RGBA_ASTC_4x4_KHR, 0 }, { PIPE_FORMAT_ASTC_4x4, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_5x4_KHR, 0 }, { PIPE_FORMAT_ASTC_5x4, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_5x5_KHR, 0 }, { PIPE_FORMAT_ASTC_5x5, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_6x5_KHR, 0 }, { PIPE_FORMAT_ASTC_6x5, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_6x6_KHR, 0 }, { PIPE_FORMAT_ASTC_6x6, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_8x5_KHR, 0 }, { PIPE_FORMAT_ASTC_8x5, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_8x6_KHR, 0 }, { PIPE_FORMAT_ASTC_8x6, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_8x8_KHR, 0 }, { PIPE_FORMAT_ASTC_8x8, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_10x5_KHR, 0 }, { PIPE_FORMAT_ASTC_10x5, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_10x6_KHR, 0 }, { PIPE_FORMAT_ASTC_10x6, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_10x8_KHR, 0 }, { PIPE_FORMAT_ASTC_10x8, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_10x10_KHR, 0 }, { PIPE_FORMAT_ASTC_10x10, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_12x10_KHR, 0 }, { PIPE_FORMAT_ASTC_12x10, 0}, }, { { GL_COMPRESSED_RGBA_ASTC_12x12_KHR, 0 }, { PIPE_FORMAT_ASTC_12x12, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, 0 }, { PIPE_FORMAT_ASTC_4x4_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, 0 }, { PIPE_FORMAT_ASTC_5x4_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, 0 }, { PIPE_FORMAT_ASTC_5x5_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, 0 }, { PIPE_FORMAT_ASTC_6x5_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, 0 }, { PIPE_FORMAT_ASTC_6x6_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, 0 }, { PIPE_FORMAT_ASTC_8x5_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, 0 }, { PIPE_FORMAT_ASTC_8x6_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, 0 }, { PIPE_FORMAT_ASTC_8x8_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, 0 }, { PIPE_FORMAT_ASTC_10x5_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, 0 }, { PIPE_FORMAT_ASTC_10x6_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, 0 }, { PIPE_FORMAT_ASTC_10x8_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, 0 }, { PIPE_FORMAT_ASTC_10x10_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, 0 }, { PIPE_FORMAT_ASTC_12x10_SRGB, 0}, }, { { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, 0 }, { PIPE_FORMAT_ASTC_12x12_SRGB, 0}, }, /* signed/unsigned integer formats. */ { { GL_RGBA_INTEGER_EXT, GL_BGRA_INTEGER_EXT, GL_RGBA8I_EXT, 0 }, { PIPE_FORMAT_R8G8B8A8_SINT, 0 } }, { { GL_RGB_INTEGER_EXT, GL_BGR_INTEGER_EXT, GL_RGB8I_EXT, GL_BLUE_INTEGER_EXT, 0 }, { PIPE_FORMAT_R8G8B8_SINT, PIPE_FORMAT_R8G8B8X8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 } }, { { GL_ALPHA_INTEGER_EXT, GL_ALPHA8I_EXT, 0 }, { PIPE_FORMAT_A8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 } }, { { GL_ALPHA16I_EXT, 0 }, { PIPE_FORMAT_A16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 } }, { { GL_ALPHA32I_EXT, 0 }, { PIPE_FORMAT_A32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 } }, { { GL_ALPHA8UI_EXT, 0 }, { PIPE_FORMAT_A8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 } }, { { GL_ALPHA16UI_EXT, 0 }, { PIPE_FORMAT_A16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 } }, { { GL_ALPHA32UI_EXT, 0 }, { PIPE_FORMAT_A32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 } }, { { GL_INTENSITY8I_EXT, 0 }, { PIPE_FORMAT_I8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 } }, { { GL_INTENSITY16I_EXT, 0 }, { PIPE_FORMAT_I16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 } }, { { GL_INTENSITY32I_EXT, 0 }, { PIPE_FORMAT_I32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 } }, { { GL_INTENSITY8UI_EXT, 0 }, { PIPE_FORMAT_I8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 } }, { { GL_INTENSITY16UI_EXT, 0 }, { PIPE_FORMAT_I16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 } }, { { GL_INTENSITY32UI_EXT, 0 }, { PIPE_FORMAT_I32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 } }, { { GL_LUMINANCE8I_EXT, 0 }, { PIPE_FORMAT_L8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 } }, { { GL_LUMINANCE16I_EXT, 0 }, { PIPE_FORMAT_L16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 } }, { { GL_LUMINANCE32I_EXT, 0 }, { PIPE_FORMAT_L32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 } }, { { GL_LUMINANCE_INTEGER_EXT, GL_LUMINANCE8UI_EXT, 0 }, { PIPE_FORMAT_L8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 } }, { { GL_LUMINANCE16UI_EXT, 0 }, { PIPE_FORMAT_L16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 } }, { { GL_LUMINANCE32UI_EXT, 0 }, { PIPE_FORMAT_L32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 } }, { { GL_LUMINANCE_ALPHA_INTEGER_EXT, GL_LUMINANCE_ALPHA8I_EXT, 0 }, { PIPE_FORMAT_L8A8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 } }, { { GL_LUMINANCE_ALPHA16I_EXT, 0 }, { PIPE_FORMAT_L16A16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 } }, { { GL_LUMINANCE_ALPHA32I_EXT, 0 }, { PIPE_FORMAT_L32A32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 } }, { { GL_LUMINANCE_ALPHA8UI_EXT, 0 }, { PIPE_FORMAT_L8A8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 } }, { { GL_LUMINANCE_ALPHA16UI_EXT, 0 }, { PIPE_FORMAT_L16A16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 } }, { { GL_LUMINANCE_ALPHA32UI_EXT, 0 }, { PIPE_FORMAT_L32A32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 } }, { { GL_RGB16I_EXT, 0 }, { PIPE_FORMAT_R16G16B16_SINT, PIPE_FORMAT_R16G16B16X16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }, }, { { GL_RGBA16I_EXT, 0 }, { PIPE_FORMAT_R16G16B16A16_SINT, 0 }, }, { { GL_RGB32I_EXT, 0 }, { PIPE_FORMAT_R32G32B32_SINT, PIPE_FORMAT_R32G32B32X32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }, }, { { GL_RGBA32I_EXT, 0 }, { PIPE_FORMAT_R32G32B32A32_SINT, 0 } }, { { GL_RGBA8UI_EXT, 0 }, { PIPE_FORMAT_R8G8B8A8_UINT, 0 } }, { { GL_RGB8UI_EXT, 0 }, { PIPE_FORMAT_R8G8B8_UINT, PIPE_FORMAT_R8G8B8X8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 } }, { { GL_RGB16UI_EXT, 0 }, { PIPE_FORMAT_R16G16B16_UINT, PIPE_FORMAT_R16G16B16X16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 } }, { { GL_RGBA16UI_EXT, 0 }, { PIPE_FORMAT_R16G16B16A16_UINT, 0 } }, { { GL_RGB32UI_EXT, 0}, { PIPE_FORMAT_R32G32B32_UINT, PIPE_FORMAT_R32G32B32X32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 } }, { { GL_RGBA32UI_EXT, 0}, { PIPE_FORMAT_R32G32B32A32_UINT, 0 } }, { { GL_R8I, GL_RED_INTEGER_EXT, 0}, { PIPE_FORMAT_R8_SINT, 0}, }, { { GL_R16I, 0}, { PIPE_FORMAT_R16_SINT, 0}, }, { { GL_R32I, 0}, { PIPE_FORMAT_R32_SINT, 0}, }, { { GL_R8UI, 0}, { PIPE_FORMAT_R8_UINT, 0}, }, { { GL_R16UI, 0}, { PIPE_FORMAT_R16_UINT, 0}, }, { { GL_R32UI, 0}, { PIPE_FORMAT_R32_UINT, 0}, }, { { GL_RG8I, GL_GREEN_INTEGER_EXT, 0}, { PIPE_FORMAT_R8G8_SINT, 0}, }, { { GL_RG16I, 0}, { PIPE_FORMAT_R16G16_SINT, 0}, }, { { GL_RG32I, 0}, { PIPE_FORMAT_R32G32_SINT, 0}, }, { { GL_RG8UI, 0}, { PIPE_FORMAT_R8G8_UINT, 0}, }, { { GL_RG16UI, 0}, { PIPE_FORMAT_R16G16_UINT, 0}, }, { { GL_RG32UI, 0}, { PIPE_FORMAT_R32G32_UINT, 0}, }, /* signed normalized formats */ { { GL_RED_SNORM, GL_R8_SNORM, 0 }, { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_R16_SNORM, 0 }, { PIPE_FORMAT_R16_SNORM, PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_RG_SNORM, GL_RG8_SNORM, 0 }, { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_RG16_SNORM, 0 }, { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_RGB_SNORM, GL_RGB8_SNORM, 0 }, { PIPE_FORMAT_R8G8B8X8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 }, { PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_RGB16_SNORM, 0 }, { PIPE_FORMAT_R16G16B16X16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_RGBA16_SNORM, 0 }, { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 }, { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_ALPHA16_SNORM, 0 }, { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 }, { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_LUMINANCE16_SNORM, 0 }, { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 }, { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_LUMINANCE16_ALPHA16_SNORM, 0 }, { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 }, { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_INTENSITY16_SNORM, 0 }, { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 } }, { { GL_RGB9_E5, 0 }, { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 } }, { { GL_R11F_G11F_B10F, 0 }, { PIPE_FORMAT_R11G11B10_FLOAT, 0 } }, { { GL_RGB10_A2UI, 0 }, { PIPE_FORMAT_R10G10B10A2_UINT, PIPE_FORMAT_B10G10R10A2_UINT, 0 } }, }; /** * Return first supported format from the given list. * \param allow_dxt indicates whether it's OK to return a DXT format. */ static enum pipe_format find_supported_format(struct pipe_screen *screen, const enum pipe_format formats[], enum pipe_texture_target target, unsigned sample_count, unsigned storage_sample_count, unsigned bindings, boolean allow_dxt) { uint i; for (i = 0; formats[i]; i++) { if (screen->is_format_supported(screen, formats[i], target, sample_count, storage_sample_count, bindings)) { if (!allow_dxt && util_format_is_s3tc(formats[i])) { /* we can't return a dxt format, continue searching */ continue; } return formats[i]; } } return PIPE_FORMAT_NONE; } /** * Given an OpenGL internalFormat value for a texture or surface, return * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match. * This is called during glTexImage2D, for example. * * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if * we want render-to-texture ability. * * \param internalFormat the user value passed to glTexImage2D * \param target one of PIPE_TEXTURE_x * \param bindings bitmask of PIPE_BIND_x flags. * \param allow_dxt indicates whether it's OK to return a DXT format. This * only matters when internalFormat names a generic or * specific compressed format. And that should only happen * when we're getting called from gl[Copy]TexImage(). */ enum pipe_format st_choose_format(struct st_context *st, GLenum internalFormat, GLenum format, GLenum type, enum pipe_texture_target target, unsigned sample_count, unsigned storage_sample_count, unsigned bindings, bool swap_bytes, bool allow_dxt) { struct pipe_screen *screen = st->pipe->screen; unsigned i; int j; enum pipe_format pf; /* can't render to compressed formats at this time */ if (_mesa_is_compressed_format(st->ctx, internalFormat) && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) { return PIPE_FORMAT_NONE; } /* If we have an unsized internalFormat, and the driver supports a format * that exactly matches format/type such that we can just memcpy, pick that * (unless the format wouldn't still be unorm, which is the expectation for * unsized formats). */ if (_mesa_is_enum_format_unsized(internalFormat) && format != 0 && _mesa_is_type_unsigned(type)) { pf = st_choose_matching_format(st, bindings, format, type, swap_bytes); if (pf != PIPE_FORMAT_NONE && screen->is_format_supported(screen, pf, target, sample_count, storage_sample_count, bindings) && _mesa_get_format_base_format(st_pipe_format_to_mesa_format(pf)) == internalFormat) { goto success; } } /* For an unsized GL_RGB but a 2_10_10_10 type, try to pick one of the * 2_10_10_10 formats. This is important for * GL_EXT_texture_type_2_10_10_10_EXT support, which says that these * formats are not color-renderable. Mesa's check for making those * non-color-renderable is based on our chosen format being 2101010. */ if (type == GL_UNSIGNED_INT_2_10_10_10_REV) { if (internalFormat == GL_RGB) internalFormat = GL_RGB10; else if (internalFormat == GL_RGBA) internalFormat = GL_RGB10_A2; } if (type == GL_UNSIGNED_SHORT_5_5_5_1) { if (internalFormat == GL_RGB) internalFormat = GL_RGB5; else if (internalFormat == GL_RGBA) internalFormat = GL_RGB5_A1; } /* search table for internalFormat */ for (i = 0; i < ARRAY_SIZE(format_map); i++) { const struct format_mapping *mapping = &format_map[i]; for (j = 0; mapping->glFormats[j]; j++) { if (mapping->glFormats[j] == internalFormat) { /* Found the desired internal format. Find first pipe format * which is supported by the driver. */ pf = find_supported_format(screen, mapping->pipeFormats, target, sample_count, storage_sample_count, bindings, allow_dxt); goto success; } } } _mesa_problem(NULL, "unhandled format!\n"); return PIPE_FORMAT_NONE; success: if (0) { debug_printf("%s(fmt=%s, type=%s, intFmt=%s) = %s\n", __FUNCTION__, _mesa_enum_to_string(format), _mesa_enum_to_string(type), _mesa_enum_to_string(internalFormat), util_format_name(pf)); } return pf; } /** * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces. */ enum pipe_format st_choose_renderbuffer_format(struct st_context *st, GLenum internalFormat, unsigned sample_count, unsigned storage_sample_count) { unsigned bindings; if (_mesa_is_depth_or_stencil_format(internalFormat)) bindings = PIPE_BIND_DEPTH_STENCIL; else bindings = PIPE_BIND_RENDER_TARGET; return st_choose_format(st, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D, sample_count, storage_sample_count, bindings, false, false); } /** * Given an OpenGL user-requested format and type, and swapBytes state, * return the format which exactly matches those parameters, so that * a memcpy-based transfer can be done. * * If no format is supported, return PIPE_FORMAT_NONE. */ enum pipe_format st_choose_matching_format(struct st_context *st, unsigned bind, GLenum format, GLenum type, GLboolean swapBytes) { struct pipe_screen *screen = st->pipe->screen; if (swapBytes && !_mesa_swap_bytes_in_type_enum(&type)) return PIPE_FORMAT_NONE; mesa_format mesa_format = _mesa_format_from_format_and_type(format, type); if (_mesa_format_is_mesa_array_format(mesa_format)) mesa_format = _mesa_format_from_array_format(mesa_format); if (mesa_format != MESA_FORMAT_NONE) { enum pipe_format format = st_mesa_format_to_pipe_format(st, mesa_format); if (format != PIPE_FORMAT_NONE && screen->is_format_supported(screen, format, PIPE_TEXTURE_2D, 0, 0, bind)) return format; } return PIPE_FORMAT_NONE; } /** * Called via ctx->Driver.ChooseTextureFormat(). */ mesa_format st_ChooseTextureFormat(struct gl_context *ctx, GLenum target, GLint internalFormat, GLenum format, GLenum type) { struct st_context *st = st_context(ctx); enum pipe_format pFormat; mesa_format mFormat; unsigned bindings; bool is_renderbuffer = false; enum pipe_texture_target pTarget; if (target == GL_RENDERBUFFER) { pTarget = PIPE_TEXTURE_2D; is_renderbuffer = true; } else { pTarget = gl_target_to_pipe(target); } if (target == GL_TEXTURE_1D || target == GL_TEXTURE_1D_ARRAY) { /* We don't do compression for these texture targets because of * difficulty with sub-texture updates on non-block boundaries, etc. * So change the internal format request to an uncompressed format. */ internalFormat = _mesa_generic_compressed_format_to_uncompressed_format(internalFormat); } /* GL textures may wind up being render targets, but we don't know * that in advance. Specify potential render target flags now for formats * that we know should always be renderable. */ bindings = PIPE_BIND_SAMPLER_VIEW; if (_mesa_is_depth_or_stencil_format(internalFormat)) bindings |= PIPE_BIND_DEPTH_STENCIL; else if (is_renderbuffer || internalFormat == 3 || internalFormat == 4 || internalFormat == GL_RGB || internalFormat == GL_RGBA || internalFormat == GL_RGBA2 || internalFormat == GL_RGB4 || internalFormat == GL_RGBA4 || internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 || internalFormat == GL_BGRA || internalFormat == GL_RGB16F || internalFormat == GL_RGBA16F || internalFormat == GL_RGB32F || internalFormat == GL_RGBA32F) bindings |= PIPE_BIND_RENDER_TARGET; /* GLES allows the driver to choose any format which matches * the format+type combo, because GLES only supports unsized internal * formats and expects the driver to choose whatever suits it. */ if (_mesa_is_gles(ctx)) { GLenum baseFormat = _mesa_base_tex_format(ctx, internalFormat); GLenum basePackFormat = _mesa_base_pack_format(format); GLenum iformat = internalFormat; /* Treat GL_BGRA as GL_RGBA. */ if (iformat == GL_BGRA) iformat = GL_RGBA; /* Check if the internalformat is unsized and compatible * with the "format". */ if (iformat == baseFormat && iformat == basePackFormat) { pFormat = st_choose_matching_format(st, bindings, format, type, ctx->Unpack.SwapBytes); if (pFormat != PIPE_FORMAT_NONE) return st_pipe_format_to_mesa_format(pFormat); if (!is_renderbuffer) { /* try choosing format again, this time without render * target bindings. */ pFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW, format, type, ctx->Unpack.SwapBytes); if (pFormat != PIPE_FORMAT_NONE) return st_pipe_format_to_mesa_format(pFormat); } } } pFormat = st_choose_format(st, internalFormat, format, type, pTarget, 0, 0, bindings, ctx->Unpack.SwapBytes, true); if (pFormat == PIPE_FORMAT_NONE && !is_renderbuffer) { /* try choosing format again, this time without render target bindings */ pFormat = st_choose_format(st, internalFormat, format, type, pTarget, 0, 0, PIPE_BIND_SAMPLER_VIEW, ctx->Unpack.SwapBytes, true); } if (pFormat == PIPE_FORMAT_NONE) { mFormat = _mesa_glenum_to_compressed_format(internalFormat); if (st_compressed_format_fallback(st, mFormat)) return mFormat; /* no luck at all */ return MESA_FORMAT_NONE; } mFormat = st_pipe_format_to_mesa_format(pFormat); /* Debugging aid */ if (0) { debug_printf("%s(intFormat=%s, format=%s, type=%s) -> %s, %s\n", __func__, _mesa_enum_to_string(internalFormat), _mesa_enum_to_string(format), _mesa_enum_to_string(type), util_format_name(pFormat), _mesa_get_format_name(mFormat)); } return mFormat; } /** * Called via ctx->Driver.QueryInternalFormat(). */ static size_t st_QuerySamplesForFormat(struct gl_context *ctx, GLenum target, GLenum internalFormat, int samples[16]) { struct st_context *st = st_context(ctx); enum pipe_format format; unsigned i, bind, num_sample_counts = 0; (void) target; if (_mesa_is_depth_or_stencil_format(internalFormat)) bind = PIPE_BIND_DEPTH_STENCIL; else bind = PIPE_BIND_RENDER_TARGET; /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear * formats. */ if (!ctx->Extensions.EXT_sRGB) { internalFormat = _mesa_get_linear_internalformat(internalFormat); } /* Set sample counts in descending order. */ for (i = 16; i > 1; i--) { format = st_choose_format(st, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D, i, i, bind, false, false); if (format != PIPE_FORMAT_NONE) { samples[num_sample_counts++] = i; } } if (!num_sample_counts) { samples[num_sample_counts++] = 1; } return num_sample_counts; } /** * ARB_internalformat_query2 driver hook. */ void st_QueryInternalFormat(struct gl_context *ctx, GLenum target, GLenum internalFormat, GLenum pname, GLint *params) { struct st_context *st = st_context(ctx); /* The API entry-point gives us a temporary params buffer that is non-NULL * and guaranteed to have at least 16 elements. */ assert(params != NULL); switch (pname) { case GL_SAMPLES: st_QuerySamplesForFormat(ctx, target, internalFormat, params); break; case GL_NUM_SAMPLE_COUNTS: { int samples[16]; size_t num_samples; num_samples = st_QuerySamplesForFormat(ctx, target, internalFormat, samples); params[0] = (GLint) num_samples; break; } case GL_INTERNALFORMAT_PREFERRED: { params[0] = GL_NONE; /* We need to resolve an internal format that is compatible with * the passed internal format, and optimal to the driver. By now, * we just validate that the passed internal format is supported by * the driver, and if so return the same internal format, otherwise * return GL_NONE. */ unsigned bindings; if (_mesa_is_depth_or_stencil_format(internalFormat)) bindings = PIPE_BIND_DEPTH_STENCIL; else bindings = PIPE_BIND_RENDER_TARGET; enum pipe_format pformat = st_choose_format(st, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D, 0, 0, bindings, false, false); if (pformat) params[0] = internalFormat; break; } default: /* For the rest of the pnames, we call back the Mesa's default * function for drivers that don't implement ARB_internalformat_query2. */ _mesa_query_internal_format_default(ctx, target, internalFormat, pname, params); } } /** * This is used for translating texture border color and the clear * color. For example, the clear color is interpreted according to * the renderbuffer's base format. For example, if clearing a * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] = * colorOut[2] = colorIn[0]. * Similarly for texture border colors. */ void st_translate_color(const union gl_color_union *colorIn, union pipe_color_union *colorOut, GLenum baseFormat, GLboolean is_integer) { if (is_integer) { const int *in = colorIn->i; int *out = colorOut->i; switch (baseFormat) { case GL_RED: out[0] = in[0]; out[1] = 0; out[2] = 0; out[3] = 1; break; case GL_RG: out[0] = in[0]; out[1] = in[1]; out[2] = 0; out[3] = 1; break; case GL_RGB: out[0] = in[0]; out[1] = in[1]; out[2] = in[2]; out[3] = 1; break; case GL_ALPHA: out[0] = out[1] = out[2] = 0; out[3] = in[3]; break; case GL_LUMINANCE: out[0] = out[1] = out[2] = in[0]; out[3] = 1; break; case GL_LUMINANCE_ALPHA: out[0] = out[1] = out[2] = in[0]; out[3] = in[3]; break; case GL_INTENSITY: out[0] = out[1] = out[2] = out[3] = in[0]; break; default: COPY_4V(out, in); } } else { const float *in = colorIn->f; float *out = colorOut->f; switch (baseFormat) { case GL_RED: out[0] = in[0]; out[1] = 0.0F; out[2] = 0.0F; out[3] = 1.0F; break; case GL_RG: out[0] = in[0]; out[1] = in[1]; out[2] = 0.0F; out[3] = 1.0F; break; case GL_RGB: out[0] = in[0]; out[1] = in[1]; out[2] = in[2]; out[3] = 1.0F; break; case GL_ALPHA: out[0] = out[1] = out[2] = 0.0F; out[3] = in[3]; break; case GL_LUMINANCE: out[0] = out[1] = out[2] = in[0]; out[3] = 1.0F; break; case GL_LUMINANCE_ALPHA: out[0] = out[1] = out[2] = in[0]; out[3] = in[3]; break; /* Stencil border is tricky on some hw. Help drivers a little here. */ case GL_STENCIL_INDEX: case GL_INTENSITY: out[0] = out[1] = out[2] = out[3] = in[0]; break; default: COPY_4V(out, in); } } }