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/*
* Copyright © 2014-2017 Broadcom
*
* 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 (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 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 vc5_formats.c
*
* Contains the table and accessors for VC5 texture and render target format
* support.
*
* The hardware has limited support for texture formats, and extremely limited
* support for render target formats. As a result, we emulate other formats
* in our shader code, and this stores the table for doing so.
*/
#include "util/u_format.h"
#include "util/macros.h"
#include "vc5_context.h"
#include "broadcom/cle/v3d_packet_v33_pack.h"
#define OUTPUT_IMAGE_FORMAT_NO 255
struct vc5_format {
/** Set if the pipe format is defined in the table. */
bool present;
/** One of V3D33_OUTPUT_IMAGE_FORMAT_*, or OUTPUT_IMAGE_FORMAT_NO */
uint8_t rt_type;
/** One of V3D33_TEXTURE_DATA_FORMAT_*. */
uint8_t tex_type;
/**
* Swizzle to apply to the RGBA shader output for storing to the tile
* buffer, to the RGBA tile buffer to produce shader input (for
* blending), and for turning the rgba8888 texture sampler return
* value into shader rgba values.
*/
uint8_t swizzle[4];
/* Whether the return value is 16F/I/UI or 32F/I/UI. */
uint8_t return_size;
/* If return_size == 32, how many channels are returned by texturing.
* 16 always returns 2 pairs of 16 bit values.
*/
uint8_t return_channels;
};
#define SWIZ(x,y,z,w) { \
PIPE_SWIZZLE_##x, \
PIPE_SWIZZLE_##y, \
PIPE_SWIZZLE_##z, \
PIPE_SWIZZLE_##w \
}
#define FORMAT(pipe, rt, tex, swiz, return_size, return_channels) \
[PIPE_FORMAT_##pipe] = { \
true, \
OUTPUT_IMAGE_FORMAT_##rt, \
TEXTURE_DATA_FORMAT_##tex, \
swiz, \
return_size, \
return_channels, \
}
#define SWIZ_X001 SWIZ(X, 0, 0, 1)
#define SWIZ_XY01 SWIZ(X, Y, 0, 1)
#define SWIZ_XYZ1 SWIZ(X, Y, Z, 1)
#define SWIZ_XYZW SWIZ(X, Y, Z, W)
#define SWIZ_YZWX SWIZ(Y, Z, W, X)
#define SWIZ_YZW1 SWIZ(Y, Z, W, 1)
#define SWIZ_ZYXW SWIZ(Z, Y, X, W)
#define SWIZ_ZYX1 SWIZ(Z, Y, X, 1)
#define SWIZ_XXXY SWIZ(X, X, X, Y)
#define SWIZ_XXX1 SWIZ(X, X, X, 1)
#define SWIZ_XXXX SWIZ(X, X, X, X)
#define SWIZ_000X SWIZ(0, 0, 0, X)
static const struct vc5_format vc5_format_table[] = {
FORMAT(B8G8R8A8_UNORM, RGBA8, RGBA8, SWIZ_ZYXW, 16, 0),
FORMAT(B8G8R8X8_UNORM, RGBX8, RGBA8, SWIZ_ZYX1, 16, 0),
FORMAT(B8G8R8A8_SRGB, SRGB8_ALPHA8, RGBA8, SWIZ_ZYXW, 16, 0),
FORMAT(B8G8R8X8_SRGB, SRGBX8, RGBA8, SWIZ_ZYX1, 16, 0),
FORMAT(R8G8B8A8_UNORM, RGBA8, RGBA8, SWIZ_XYZW, 16, 0),
FORMAT(R8G8B8X8_UNORM, RGBX8, RGBA8, SWIZ_XYZ1, 16, 0),
FORMAT(R8G8B8A8_SNORM, NO, RGBA8_SNORM, SWIZ_XYZW, 16, 0),
FORMAT(R8G8B8X8_SNORM, NO, RGBA8_SNORM, SWIZ_XYZ1, 16, 0),
FORMAT(B10G10R10A2_UNORM, RGB10_A2, RGB10_A2, SWIZ_ZYXW, 16, 0),
FORMAT(B4G4R4A4_UNORM, ABGR4444, RGBA4, SWIZ_YZWX, 16, 0),
FORMAT(B4G4R4X4_UNORM, ABGR4444, RGBA4, SWIZ_YZW1, 16, 0),
FORMAT(A1B5G5R5_UNORM, ABGR1555, RGB5_A1, SWIZ_XYZW, 16, 0),
FORMAT(X1B5G5R5_UNORM, ABGR1555, RGB5_A1, SWIZ_XYZ1, 16, 0),
FORMAT(B5G6R5_UNORM, BGR565, RGB565, SWIZ_XYZ1, 16, 0),
FORMAT(R8_UNORM, R8, R8, SWIZ_X001, 16, 0),
FORMAT(R8_SNORM, NO, R8_SNORM, SWIZ_X001, 16, 0),
FORMAT(R8G8_UNORM, RG8, RG8, SWIZ_XY01, 16, 0),
FORMAT(R8G8_SNORM, NO, RG8_SNORM, SWIZ_XY01, 16, 0),
FORMAT(R16_UNORM, NO, R16, SWIZ_X001, 32, 1),
FORMAT(R16_SNORM, NO, R16_SNORM, SWIZ_X001, 32, 1),
FORMAT(R16_FLOAT, R16F, R16F, SWIZ_X001, 16, 0),
FORMAT(R32_FLOAT, R32F, R32F, SWIZ_X001, 32, 1),
FORMAT(R16G16_UNORM, NO, RG16, SWIZ_XY01, 32, 2),
FORMAT(R16G16_SNORM, NO, RG16_SNORM, SWIZ_XY01, 32, 2),
FORMAT(R16G16_FLOAT, RG16F, RG16F, SWIZ_XY01, 16, 0),
FORMAT(R32G32_FLOAT, RG32F, RG32F, SWIZ_XY01, 32, 2),
FORMAT(R16G16B16A16_UNORM, NO, RGBA16, SWIZ_XYZW, 32, 4),
FORMAT(R16G16B16A16_SNORM, NO, RGBA16_SNORM, SWIZ_XYZW, 32, 4),
FORMAT(R16G16B16A16_FLOAT, RGBA16F, RGBA16F, SWIZ_XYZW, 16, 0),
FORMAT(R32G32B32A32_FLOAT, RGBA32F, RGBA32F, SWIZ_XYZW, 32, 4),
/* If we don't have L/A/LA16, mesa/st will fall back to RGBA16. */
FORMAT(L16_UNORM, NO, R16, SWIZ_XXX1, 32, 1),
FORMAT(L16_SNORM, NO, R16_SNORM, SWIZ_XXX1, 32, 1),
FORMAT(I16_UNORM, NO, R16, SWIZ_XXXX, 32, 1),
FORMAT(I16_SNORM, NO, R16_SNORM, SWIZ_XXXX, 32, 1),
FORMAT(A16_UNORM, NO, R16, SWIZ_000X, 32, 1),
FORMAT(A16_SNORM, NO, R16_SNORM, SWIZ_000X, 32, 1),
FORMAT(L16A16_UNORM, NO, RG16, SWIZ_XXXY, 32, 2),
FORMAT(L16A16_SNORM, NO, RG16_SNORM, SWIZ_XXXY, 32, 2),
FORMAT(A8_UNORM, NO, R8, SWIZ_000X, 16, 0),
FORMAT(L8_UNORM, NO, R8, SWIZ_XXX1, 16, 0),
FORMAT(I8_UNORM, NO, R8, SWIZ_XXXX, 16, 0),
FORMAT(L8A8_UNORM, NO, RG8, SWIZ_XXXY, 16, 0),
FORMAT(R8_SINT, R8I, S8, SWIZ_X001, 16, 0),
FORMAT(R8_UINT, R8UI, S8, SWIZ_X001, 16, 0),
FORMAT(R8G8_SINT, RG8I, S16, SWIZ_XY01, 16, 0),
FORMAT(R8G8_UINT, RG8UI, S16, SWIZ_XY01, 16, 0),
FORMAT(R8G8B8A8_SINT, RGBA8I, R32F, SWIZ_XYZW, 16, 0),
FORMAT(R8G8B8A8_UINT, RGBA8UI, R32F, SWIZ_XYZW, 16, 0),
FORMAT(R16_SINT, R16I, S16, SWIZ_X001, 16, 0),
FORMAT(R16_UINT, R16UI, S16, SWIZ_X001, 16, 0),
FORMAT(R16G16_SINT, RG16I, R32F, SWIZ_XY01, 16, 0),
FORMAT(R16G16_UINT, RG16UI, R32F, SWIZ_XY01, 16, 0),
FORMAT(R16G16B16A16_SINT, RGBA16I, RG32F, SWIZ_XYZW, 16, 0),
FORMAT(R16G16B16A16_UINT, RGBA16UI, RG32F, SWIZ_XYZW, 16, 0),
FORMAT(R32_SINT, R32I, R32F, SWIZ_X001, 16, 0),
FORMAT(R32_UINT, R32UI, R32F, SWIZ_X001, 16, 0),
FORMAT(R32G32_SINT, RG32I, RG32F, SWIZ_XY01, 16, 0),
FORMAT(R32G32_UINT, RG32UI, RG32F, SWIZ_XY01, 16, 0),
FORMAT(R32G32B32A32_SINT, RGBA32I, RGBA32F, SWIZ_XYZW, 16, 0),
FORMAT(R32G32B32A32_UINT, RGBA32UI, RGBA32F, SWIZ_XYZW, 16, 0),
FORMAT(A8_SINT, R8I, S8, SWIZ_000X, 16, 0),
FORMAT(A8_UINT, R8UI, S8, SWIZ_000X, 16, 0),
FORMAT(A16_SINT, R16I, S16, SWIZ_000X, 16, 0),
FORMAT(A16_UINT, R16UI, S16, SWIZ_000X, 16, 0),
FORMAT(A32_SINT, R32I, R32F, SWIZ_000X, 16, 0),
FORMAT(A32_UINT, R32UI, R32F, SWIZ_000X, 16, 0),
FORMAT(R11G11B10_FLOAT, R11F_G11F_B10F, R11F_G11F_B10F, SWIZ_XYZW, 16, 0),
FORMAT(R9G9B9E5_FLOAT, NO, RGB9_E5, SWIZ_XYZW, 16, 0),
FORMAT(S8_UINT_Z24_UNORM, DEPTH24_STENCIL8, DEPTH24_X8, SWIZ_X001, 32, 1),
FORMAT(X8Z24_UNORM, DEPTH_COMPONENT24, DEPTH24_X8, SWIZ_X001, 32, 1),
FORMAT(S8X24_UINT, NO, R32F, SWIZ_X001, 32, 1),
FORMAT(Z32_FLOAT, DEPTH_COMPONENT32F, R32F, SWIZ_X001, 32, 1),
FORMAT(Z16_UNORM, DEPTH_COMPONENT16, DEPTH_COMP16, SWIZ_X001, 32, 1),
/* Pretend we support this, but it'll be separate Z32F depth and S8. */
FORMAT(Z32_FLOAT_S8X24_UINT, DEPTH_COMPONENT32F, R32F, SWIZ_X001, 32, 1),
FORMAT(ETC2_RGB8, NO, RGB8_ETC2, SWIZ_XYZ1, 16, 0),
FORMAT(ETC2_SRGB8, NO, RGB8_ETC2, SWIZ_XYZ1, 16, 0),
FORMAT(ETC2_RGB8A1, NO, RGB8_PUNCHTHROUGH_ALPHA1, SWIZ_XYZW, 16, 0),
FORMAT(ETC2_SRGB8A1, NO, RGB8_PUNCHTHROUGH_ALPHA1, SWIZ_XYZW, 16, 0),
FORMAT(ETC2_RGBA8, NO, RGBA8_ETC2_EAC, SWIZ_XYZW, 16, 0),
FORMAT(ETC2_R11_UNORM, NO, R11_EAC, SWIZ_X001, 16, 0),
FORMAT(ETC2_R11_SNORM, NO, SIGNED_R11_EAC, SWIZ_X001, 16, 0),
FORMAT(ETC2_RG11_UNORM, NO, RG11_EAC, SWIZ_XY01, 16, 0),
FORMAT(ETC2_RG11_SNORM, NO, SIGNED_RG11_EAC, SWIZ_XY01, 16, 0),
FORMAT(DXT1_RGB, NO, BC1, SWIZ_XYZ1, 16, 0),
FORMAT(DXT3_RGBA, NO, BC2, SWIZ_XYZ1, 16, 0),
FORMAT(DXT5_RGBA, NO, BC3, SWIZ_XYZ1, 16, 0),
};
static const struct vc5_format *
get_format(enum pipe_format f)
{
if (f >= ARRAY_SIZE(vc5_format_table) ||
!vc5_format_table[f].present)
return NULL;
else
return &vc5_format_table[f];
}
bool
vc5_rt_format_supported(enum pipe_format f)
{
const struct vc5_format *vf = get_format(f);
if (!vf)
return false;
return vf->rt_type != OUTPUT_IMAGE_FORMAT_NO;
}
uint8_t
vc5_get_rt_format(enum pipe_format f)
{
const struct vc5_format *vf = get_format(f);
if (!vf)
return 0;
return vf->rt_type;
}
bool
vc5_tex_format_supported(enum pipe_format f)
{
const struct vc5_format *vf = get_format(f);
return vf != NULL;
}
uint8_t
vc5_get_tex_format(enum pipe_format f)
{
const struct vc5_format *vf = get_format(f);
if (!vf)
return 0;
return vf->tex_type;
}
uint8_t
vc5_get_tex_return_size(enum pipe_format f)
{
const struct vc5_format *vf = get_format(f);
if (!vf)
return 0;
return vf->return_size;
}
uint8_t
vc5_get_tex_return_channels(enum pipe_format f)
{
const struct vc5_format *vf = get_format(f);
if (!vf)
return 0;
return vf->return_channels;
}
const uint8_t *
vc5_get_format_swizzle(enum pipe_format f)
{
const struct vc5_format *vf = get_format(f);
static const uint8_t fallback[] = {0, 1, 2, 3};
if (!vf)
return fallback;
return vf->swizzle;
}
void
vc5_get_internal_type_bpp_for_output_format(uint32_t format,
uint32_t *type,
uint32_t *bpp)
{
switch (format) {
case OUTPUT_IMAGE_FORMAT_RGBA8:
case OUTPUT_IMAGE_FORMAT_RGBX8:
case OUTPUT_IMAGE_FORMAT_RGB8:
case OUTPUT_IMAGE_FORMAT_RG8:
case OUTPUT_IMAGE_FORMAT_R8:
case OUTPUT_IMAGE_FORMAT_ABGR4444:
case OUTPUT_IMAGE_FORMAT_BGR565:
case OUTPUT_IMAGE_FORMAT_ABGR1555:
*type = INTERNAL_TYPE_8;
*bpp = INTERNAL_BPP_32;
break;
case OUTPUT_IMAGE_FORMAT_RGBA8I:
case OUTPUT_IMAGE_FORMAT_RG8I:
case OUTPUT_IMAGE_FORMAT_R8I:
*type = INTERNAL_TYPE_8I;
*bpp = INTERNAL_BPP_32;
break;
case OUTPUT_IMAGE_FORMAT_RGBA8UI:
case OUTPUT_IMAGE_FORMAT_RG8UI:
case OUTPUT_IMAGE_FORMAT_R8UI:
*type = INTERNAL_TYPE_8UI;
*bpp = INTERNAL_BPP_32;
break;
case OUTPUT_IMAGE_FORMAT_SRGB8_ALPHA8:
case OUTPUT_IMAGE_FORMAT_SRGB:
case OUTPUT_IMAGE_FORMAT_RGB10_A2:
case OUTPUT_IMAGE_FORMAT_R11F_G11F_B10F:
case OUTPUT_IMAGE_FORMAT_SRGBX8:
case OUTPUT_IMAGE_FORMAT_RGBA16F:
/* Note that sRGB RTs are stored in the tile buffer at 16F,
* and the conversion to sRGB happens at tilebuffer
* load/store.
*/
*type = INTERNAL_TYPE_16F;
*bpp = INTERNAL_BPP_64;
break;
case OUTPUT_IMAGE_FORMAT_RG16F:
case OUTPUT_IMAGE_FORMAT_R16F:
*type = INTERNAL_TYPE_16F;
/* Use 64bpp to make sure the TLB doesn't throw away the alpha
* channel before alpha test happens.
*/
*bpp = INTERNAL_BPP_64;
break;
case OUTPUT_IMAGE_FORMAT_RGBA16I:
*type = INTERNAL_TYPE_16I;
*bpp = INTERNAL_BPP_64;
break;
case OUTPUT_IMAGE_FORMAT_RG16I:
case OUTPUT_IMAGE_FORMAT_R16I:
*type = INTERNAL_TYPE_16I;
*bpp = INTERNAL_BPP_32;
break;
case OUTPUT_IMAGE_FORMAT_RGBA16UI:
*type = INTERNAL_TYPE_16UI;
*bpp = INTERNAL_BPP_64;
break;
case OUTPUT_IMAGE_FORMAT_RG16UI:
case OUTPUT_IMAGE_FORMAT_R16UI:
*type = INTERNAL_TYPE_16UI;
*bpp = INTERNAL_BPP_32;
break;
case OUTPUT_IMAGE_FORMAT_RGBA32I:
*type = INTERNAL_TYPE_32I;
*bpp = INTERNAL_BPP_128;
break;
case OUTPUT_IMAGE_FORMAT_RG32I:
*type = INTERNAL_TYPE_32I;
*bpp = INTERNAL_BPP_64;
break;
case OUTPUT_IMAGE_FORMAT_R32I:
*type = INTERNAL_TYPE_32I;
*bpp = INTERNAL_BPP_32;
break;
case OUTPUT_IMAGE_FORMAT_RGBA32UI:
*type = INTERNAL_TYPE_32UI;
*bpp = INTERNAL_BPP_128;
break;
case OUTPUT_IMAGE_FORMAT_RG32UI:
*type = INTERNAL_TYPE_32UI;
*bpp = INTERNAL_BPP_64;
break;
case OUTPUT_IMAGE_FORMAT_R32UI:
*type = INTERNAL_TYPE_32UI;
*bpp = INTERNAL_BPP_32;
break;
case OUTPUT_IMAGE_FORMAT_RGBA32F:
*type = INTERNAL_TYPE_32F;
*bpp = INTERNAL_BPP_128;
break;
case OUTPUT_IMAGE_FORMAT_RG32F:
*type = INTERNAL_TYPE_32F;
*bpp = INTERNAL_BPP_64;
break;
case OUTPUT_IMAGE_FORMAT_R32F:
*type = INTERNAL_TYPE_32F;
*bpp = INTERNAL_BPP_32;
break;
default:
/* Provide some default values, as we'll be called at RB
* creation time, even if an RB with this format isn't
* supported.
*/
*type = INTERNAL_TYPE_8;
*bpp = INTERNAL_BPP_32;
break;
}
}
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