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/*
* Copyright (C) 2019 Collabora, Ltd.
*
* 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:
* Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
*/
#include <stdio.h>
#include "panfrost-job.h"
#include "pan_texture.h"
static unsigned
panfrost_translate_channel_width(unsigned size)
{
switch (size) {
case 4:
return MALI_CHANNEL_4;
case 8:
return MALI_CHANNEL_8;
case 16:
return MALI_CHANNEL_16;
case 32:
return MALI_CHANNEL_32;
default:
unreachable("Invalid format width\n");
}
}
static unsigned
panfrost_translate_channel_type(unsigned type, unsigned size, bool norm)
{
switch (type) {
case UTIL_FORMAT_TYPE_UNSIGNED:
return norm ? MALI_FORMAT_UNORM : MALI_FORMAT_UINT;
case UTIL_FORMAT_TYPE_SIGNED:
return norm ? MALI_FORMAT_SNORM : MALI_FORMAT_SINT;
case UTIL_FORMAT_TYPE_FLOAT:
/* fp16 -- SINT, fp32 -- UNORM ... gotta use those bits */
if (size == 16)
return MALI_FORMAT_SINT;
else if (size == 32)
return MALI_FORMAT_UNORM;
else
unreachable("Invalid float size");
default:
unreachable("Invalid type");
}
}
/* Constructs a mali_format satisfying the specified Gallium format
* description */
enum mali_format
panfrost_find_format(const struct util_format_description *desc)
{
/* Find first non-VOID channel */
struct util_format_channel_description chan = desc->channel[0];
for (unsigned c = 0; c < 4; ++c)
{
if (desc->channel[c].type == UTIL_FORMAT_TYPE_VOID)
continue;
chan = desc->channel[c];
break;
}
/* Check for special formats */
switch (desc->format)
{
case PIPE_FORMAT_R10G10B10X2_UNORM:
case PIPE_FORMAT_B10G10R10X2_UNORM:
case PIPE_FORMAT_R10G10B10A2_UNORM:
case PIPE_FORMAT_B10G10R10A2_UNORM:
return MALI_RGB10_A2_UNORM;
case PIPE_FORMAT_R10G10B10X2_SNORM:
case PIPE_FORMAT_R10G10B10A2_SNORM:
case PIPE_FORMAT_B10G10R10A2_SNORM:
return MALI_RGB10_A2_SNORM;
case PIPE_FORMAT_R10G10B10A2_UINT:
case PIPE_FORMAT_B10G10R10A2_UINT:
case PIPE_FORMAT_R10G10B10A2_USCALED:
case PIPE_FORMAT_B10G10R10A2_USCALED:
return MALI_RGB10_A2UI;
case PIPE_FORMAT_R10G10B10A2_SSCALED:
case PIPE_FORMAT_B10G10R10A2_SSCALED:
return MALI_RGB10_A2I;
case PIPE_FORMAT_Z32_UNORM:
case PIPE_FORMAT_Z24X8_UNORM:
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
return MALI_Z32_UNORM;
case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
/* Z32F = R32F to the hardware */
return MALI_R32F;
case PIPE_FORMAT_R3G3B2_UNORM:
return MALI_RGB332_UNORM;
case PIPE_FORMAT_B5G6R5_UNORM:
return MALI_RGB565;
case PIPE_FORMAT_B5G5R5X1_UNORM:
return MALI_RGB5_X1_UNORM;
case PIPE_FORMAT_B5G5R5A1_UNORM:
return MALI_RGB5_A1_UNORM;
case PIPE_FORMAT_A1B5G5R5_UNORM:
case PIPE_FORMAT_X1B5G5R5_UNORM:
/* Not supported - this is backwards from OpenGL! */
assert(0);
break;
case PIPE_FORMAT_R32_FIXED:
return MALI_R32_FIXED;
case PIPE_FORMAT_R32G32_FIXED:
return MALI_RG32_FIXED;
case PIPE_FORMAT_R32G32B32_FIXED:
return MALI_RGB32_FIXED;
case PIPE_FORMAT_R32G32B32A32_FIXED:
return MALI_RGBA32_FIXED;
case PIPE_FORMAT_R11G11B10_FLOAT:
return MALI_R11F_G11F_B10F;
case PIPE_FORMAT_R9G9B9E5_FLOAT:
return MALI_R9F_G9F_B9F_E5F;
case PIPE_FORMAT_ETC1_RGB8:
case PIPE_FORMAT_ETC2_RGB8:
case PIPE_FORMAT_ETC2_SRGB8:
return MALI_ETC2_RGB8;
case PIPE_FORMAT_ETC2_RGB8A1:
case PIPE_FORMAT_ETC2_SRGB8A1:
return MALI_ETC2_RGB8A1;
case PIPE_FORMAT_ETC2_RGBA8:
case PIPE_FORMAT_ETC2_SRGBA8:
return MALI_ETC2_RGBA8;
case PIPE_FORMAT_ETC2_R11_UNORM:
return MALI_ETC2_R11_UNORM;
case PIPE_FORMAT_ETC2_R11_SNORM:
return MALI_ETC2_R11_SNORM;
case PIPE_FORMAT_ETC2_RG11_UNORM:
return MALI_ETC2_RG11_UNORM;
case PIPE_FORMAT_ETC2_RG11_SNORM:
return MALI_ETC2_RG11_SNORM;
default:
/* Fallthrough to default */
break;
}
if (desc->layout == UTIL_FORMAT_LAYOUT_ASTC) {
if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB)
return MALI_ASTC_SRGB_SUPP;
else
return MALI_ASTC_HDR_SUPP;
}
/* Formats must match in channel count */
assert(desc->nr_channels >= 1 && desc->nr_channels <= 4);
unsigned format = MALI_NR_CHANNELS(desc->nr_channels);
switch (chan.type)
{
case UTIL_FORMAT_TYPE_UNSIGNED:
case UTIL_FORMAT_TYPE_SIGNED:
case UTIL_FORMAT_TYPE_FIXED:
/* Channel width */
format |= panfrost_translate_channel_width(chan.size);
/* Channel type */
format |= panfrost_translate_channel_type(chan.type, chan.size, chan.normalized);
break;
case UTIL_FORMAT_TYPE_FLOAT:
/* Float formats use a special width and encode width
* with type mixed */
format |= MALI_CHANNEL_FLOAT;
format |= panfrost_translate_channel_type(chan.type, chan.size, chan.normalized);
break;
default:
fprintf(stderr, "%s\n", util_format_name(desc->format));
unreachable("Invalid format type");
}
return (enum mali_format) format;
}
/* Is a format encoded like Z24S8 and therefore compatible for render? */
bool
panfrost_is_z24s8_variant(enum pipe_format fmt)
{
switch (fmt) {
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
case PIPE_FORMAT_Z24X8_UNORM:
return true;
default:
return false;
}
}
/* Translate a PIPE swizzle quad to a 12-bit Mali swizzle code. PIPE
* swizzles line up with Mali swizzles for the XYZW01, but PIPE swizzles have
* an additional "NONE" field that we have to mask out to zero. Additionally,
* PIPE swizzles are sparse but Mali swizzles are packed */
unsigned
panfrost_translate_swizzle_4(const unsigned char swizzle[4])
{
unsigned out = 0;
for (unsigned i = 0; i < 4; ++i) {
unsigned translated = (swizzle[i] > PIPE_SWIZZLE_1) ? PIPE_SWIZZLE_0 : swizzle[i];
out |= (translated << (3*i));
}
return out;
}
void
panfrost_invert_swizzle(const unsigned char *in, unsigned char *out)
{
/* First, default to all zeroes to prevent uninitialized junk */
for (unsigned c = 0; c < 4; ++c)
out[c] = PIPE_SWIZZLE_0;
/* Now "do" what the swizzle says */
for (unsigned c = 0; c < 4; ++c) {
unsigned char i = in[c];
/* Who cares? */
assert(PIPE_SWIZZLE_X == 0);
if (i > PIPE_SWIZZLE_W)
continue;
/* Invert */
unsigned idx = i - PIPE_SWIZZLE_X;
out[idx] = PIPE_SWIZZLE_X + c;
}
}
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