/*
* Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
*
* 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.
*
* Authors:
* Rob Clark <robclark@freedesktop.org>
*/
#include "pipe/p_defines.h"
#include "util/format/u_format.h"
#include "fd2_util.h"
static enum a2xx_sq_surfaceformat
pipe2surface(enum pipe_format format, struct surface_format *fmt)
{
const struct util_format_description *desc = util_format_description(format);
if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) {
switch (format) {
/* Compressed textures. */
case PIPE_FORMAT_ETC1_RGB8:
return FMT_ETC1_RGB;
case PIPE_FORMAT_DXT1_RGB:
case PIPE_FORMAT_DXT1_RGBA:
return FMT_DXT1;
case PIPE_FORMAT_DXT3_RGBA:
return FMT_DXT2_3;
case PIPE_FORMAT_DXT5_RGBA:
return FMT_DXT4_5;
case PIPE_FORMAT_ATC_RGB:
return FMT_ATI_TC_555_565_RGB;
case PIPE_FORMAT_ATC_RGBA_EXPLICIT:
return FMT_ATI_TC_555_565_RGBA;
case PIPE_FORMAT_ATC_RGBA_INTERPOLATED:
return FMT_ATI_TC_555_565_RGBA_INTERP;
/* YUV buffers. */
case PIPE_FORMAT_UYVY:
return FMT_Y1_Cr_Y0_Cb;
case PIPE_FORMAT_YUYV:
return FMT_Cr_Y1_Cb_Y0;
default:
return ~0;
}
}
uint32_t channel_size = 0;
for (unsigned i = 0; i < 4; i++)
channel_size |= desc->channel[i].size << i * 8;
unsigned i = util_format_get_first_non_void_channel(format);
if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED ||
desc->channel[i].type == UTIL_FORMAT_TYPE_FIXED)
fmt->sign = SQ_TEX_SIGN_SIGNED;
if (!desc->channel[i].normalized)
fmt->num_format = SQ_TEX_NUM_FORMAT_INT;
if (desc->channel[i].type == UTIL_FORMAT_TYPE_FIXED)
fmt->exp_adjust = -16;
/* Note: the 3 channel 24bpp/48bpp/96bpp formats are only for vertex fetch
* we can use the 4 channel format and ignore the 4th component just isn't
* used
* XXX: is it possible for the extra loaded component to cause a MMU fault?
*/
#define CASE(r, g, b, a) case (r | g << 8 | b << 16 | a << 24)
/* clang-format off */
if (desc->channel[0].type == UTIL_FORMAT_TYPE_FLOAT) {
switch (channel_size) {
CASE(16, 0, 0, 0): return FMT_16_FLOAT;
CASE(16, 16, 0, 0): return FMT_16_16_FLOAT;
CASE(16, 16, 16, 0): return FMT_16_16_16_16_FLOAT; /* Note: only for vertex */
CASE(16, 16, 16, 16): return FMT_16_16_16_16_FLOAT;
CASE(32, 0, 0, 0): return FMT_32_FLOAT;
CASE(32, 32, 0, 0): return FMT_32_32_FLOAT;
CASE(32, 32, 32, 0): return FMT_32_32_32_FLOAT;
CASE(32, 32, 32, 32): return FMT_32_32_32_32_FLOAT;
}
} else {
switch (channel_size) {
CASE( 8, 0, 0, 0): return FMT_8;
CASE( 8, 8, 0, 0): return FMT_8_8;
CASE( 8, 8, 8, 0): return FMT_8_8_8_8; /* Note: only for vertex */
CASE( 8, 8, 8, 8): return FMT_8_8_8_8;
CASE(16, 0, 0, 0): return FMT_16;
CASE(16, 16, 0, 0): return FMT_16_16;
CASE(16, 16, 16, 0): return FMT_16_16_16_16; /* Note: only for vertex */
CASE(16, 16, 16, 16): return FMT_16_16_16_16;
CASE(32, 0, 0, 0): return FMT_32;
CASE(32, 32, 0, 0): return FMT_32_32;
CASE(32, 32, 32, 0): return FMT_32_32_32_32; /* Note: only for vertex */
CASE(32, 32, 32, 32): return FMT_32_32_32_32;
CASE( 4, 4, 4, 4): return FMT_4_4_4_4;
CASE( 5, 5, 5, 1): return FMT_1_5_5_5;
CASE( 5, 6, 5, 0): return FMT_5_6_5;
CASE(10, 10, 10, 2): return FMT_2_10_10_10;
CASE( 8, 24, 0, 0): return FMT_24_8;
CASE( 2, 3, 3, 0): return FMT_2_3_3; /* Note: R/B swapped */
}
}
/* clang-format on */
#undef CASE
return ~0;
}
struct surface_format
fd2_pipe2surface(enum pipe_format format)
{
struct surface_format fmt = {
.sign = SQ_TEX_SIGN_UNSIGNED,
.num_format = SQ_TEX_NUM_FORMAT_FRAC,
.exp_adjust = 0,
};
fmt.format = pipe2surface(format, &fmt);
return fmt;
}
enum a2xx_colorformatx
fd2_pipe2color(enum pipe_format format)
{
switch (format) {
/* 8-bit buffers. */
case PIPE_FORMAT_R8_UNORM:
return COLORX_8;
case PIPE_FORMAT_B2G3R3_UNORM:
return COLORX_2_3_3; /* note: untested */
/* 16-bit buffers. */
case PIPE_FORMAT_B5G6R5_UNORM:
return COLORX_5_6_5;
case PIPE_FORMAT_B5G5R5A1_UNORM:
case PIPE_FORMAT_B5G5R5X1_UNORM:
return COLORX_1_5_5_5;
case PIPE_FORMAT_B4G4R4A4_UNORM:
case PIPE_FORMAT_B4G4R4X4_UNORM:
return COLORX_4_4_4_4;
case PIPE_FORMAT_R8G8_UNORM:
return COLORX_8_8;
/* 32-bit buffers. */
case PIPE_FORMAT_B8G8R8A8_UNORM:
case PIPE_FORMAT_B8G8R8X8_UNORM:
case PIPE_FORMAT_R8G8B8A8_UNORM:
case PIPE_FORMAT_R8G8B8X8_UNORM:
return COLORX_8_8_8_8;
/* Note: snorm untested */
case PIPE_FORMAT_R8G8B8A8_SNORM:
case PIPE_FORMAT_R8G8B8X8_SNORM:
return COLORX_S8_8_8_8;
/* float buffers */
case PIPE_FORMAT_R16_FLOAT:
return COLORX_16_FLOAT;
case PIPE_FORMAT_R16G16_FLOAT:
return COLORX_16_16_FLOAT;
case PIPE_FORMAT_R16G16B16A16_FLOAT:
return COLORX_16_16_16_16_FLOAT;
case PIPE_FORMAT_R32_FLOAT:
return COLORX_32_FLOAT;
case PIPE_FORMAT_R32G32_FLOAT:
return COLORX_32_32_FLOAT;
case PIPE_FORMAT_R32G32B32A32_FLOAT:
return COLORX_32_32_32_32_FLOAT;
default:
return ~0;
}
}
static inline enum sq_tex_swiz
tex_swiz(unsigned swiz)
{
switch (swiz) {
default:
case PIPE_SWIZZLE_X:
return SQ_TEX_X;
case PIPE_SWIZZLE_Y:
return SQ_TEX_Y;
case PIPE_SWIZZLE_Z:
return SQ_TEX_Z;
case PIPE_SWIZZLE_W:
return SQ_TEX_W;
case PIPE_SWIZZLE_0:
return SQ_TEX_ZERO;
case PIPE_SWIZZLE_1:
return SQ_TEX_ONE;
}
}
uint32_t
fd2_tex_swiz(enum pipe_format format, unsigned swizzle_r, unsigned swizzle_g,
unsigned swizzle_b, unsigned swizzle_a)
{
const struct util_format_description *desc = util_format_description(format);
unsigned char swiz[4] = {
swizzle_r,
swizzle_g,
swizzle_b,
swizzle_a,
}, rswiz[4];
util_format_compose_swizzles(desc->swizzle, swiz, rswiz);
return A2XX_SQ_TEX_3_SWIZ_X(tex_swiz(rswiz[0])) |
A2XX_SQ_TEX_3_SWIZ_Y(tex_swiz(rswiz[1])) |
A2XX_SQ_TEX_3_SWIZ_Z(tex_swiz(rswiz[2])) |
A2XX_SQ_TEX_3_SWIZ_W(tex_swiz(rswiz[3]));
}
uint32_t
fd2_vtx_swiz(enum pipe_format format, unsigned swizzle)
{
const struct util_format_description *desc = util_format_description(format);
unsigned char swiz[4], rswiz[4];
for (unsigned i = 0; i < 4; i++)
swiz[i] = (swizzle >> i * 3) & 7;
util_format_compose_swizzles(desc->swizzle, swiz, rswiz);
return rswiz[0] | rswiz[1] << 3 | rswiz[2] << 6 | rswiz[3] << 9;
}