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Diffstat (limited to 'thirdparty/basis_universal/basisu_pvrtc1_4.cpp')
-rw-r--r--thirdparty/basis_universal/basisu_pvrtc1_4.cpp269
1 files changed, 0 insertions, 269 deletions
diff --git a/thirdparty/basis_universal/basisu_pvrtc1_4.cpp b/thirdparty/basis_universal/basisu_pvrtc1_4.cpp
deleted file mode 100644
index f0122fcb6c..0000000000
--- a/thirdparty/basis_universal/basisu_pvrtc1_4.cpp
+++ /dev/null
@@ -1,269 +0,0 @@
-// basisu_pvrtc1_4.cpp
-// Copyright (C) 2019 Binomial LLC. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-#include "basisu_pvrtc1_4.h"
-
-namespace basisu
-{
- uint32_t pvrtc4_swizzle_uv(uint32_t width, uint32_t height, uint32_t x, uint32_t y)
- {
- assert((x < width) && (y < height) && basisu::is_pow2(height) && basisu::is_pow2(width));
-
- uint32_t min_d = width, max_v = y;
- if (height < width)
- {
- min_d = height;
- max_v = x;
- }
-
- // Interleave the XY LSB's
- uint32_t shift_ofs = 0, swizzled = 0;
- for (uint32_t s_bit = 1, d_bit = 1; s_bit < min_d; s_bit <<= 1, d_bit <<= 2, ++shift_ofs)
- {
- if (y & s_bit) swizzled |= d_bit;
- if (x & s_bit) swizzled |= (2 * d_bit);
- }
-
- max_v >>= shift_ofs;
-
- // OR in the rest of the bits from the largest dimension
- swizzled |= (max_v << (2 * shift_ofs));
-
- return swizzled;
- }
-
- color_rgba pvrtc4_block::get_endpoint(uint32_t endpoint_index, bool unpack) const
- {
- assert(endpoint_index < 2);
- const uint32_t packed = m_endpoints >> (endpoint_index * 16);
-
- uint32_t r, g, b, a;
- if (packed & 0x8000)
- {
- // opaque 554 or 555
- if (!endpoint_index)
- {
- r = (packed >> 10) & 31;
- g = (packed >> 5) & 31;
- b = (packed >> 1) & 15;
-
- if (unpack)
- {
- b = (b << 1) | (b >> 3);
- }
- }
- else
- {
- r = (packed >> 10) & 31;
- g = (packed >> 5) & 31;
- b = packed & 31;
- }
-
- a = unpack ? 255 : 7;
- }
- else
- {
- // translucent 4433 or 4443
- if (!endpoint_index)
- {
- a = (packed >> 12) & 7;
- r = (packed >> 8) & 15;
- g = (packed >> 4) & 15;
- b = (packed >> 1) & 7;
-
- if (unpack)
- {
- a = (a << 1);
- a = (a << 4) | a;
-
- r = (r << 1) | (r >> 3);
- g = (g << 1) | (g >> 3);
- b = (b << 2) | (b >> 1);
- }
- }
- else
- {
- a = (packed >> 12) & 7;
- r = (packed >> 8) & 15;
- g = (packed >> 4) & 15;
- b = packed & 15;
-
- if (unpack)
- {
- a = (a << 1);
- a = (a << 4) | a;
-
- r = (r << 1) | (r >> 3);
- g = (g << 1) | (g >> 3);
- b = (b << 1) | (b >> 3);
- }
- }
- }
-
- if (unpack)
- {
- r = (r << 3) | (r >> 2);
- g = (g << 3) | (g >> 2);
- b = (b << 3) | (b >> 2);
- }
-
- assert((r < 256) && (g < 256) && (b < 256) && (a < 256));
-
- return color_rgba(r, g, b, a);
- }
-
- color_rgba pvrtc4_block::get_endpoint_5554(uint32_t endpoint_index) const
- {
- assert(endpoint_index < 2);
- const uint32_t packed = m_endpoints >> (endpoint_index * 16);
-
- uint32_t r, g, b, a;
- if (packed & 0x8000)
- {
- // opaque 554 or 555
- if (!endpoint_index)
- {
- r = (packed >> 10) & 31;
- g = (packed >> 5) & 31;
- b = (packed >> 1) & 15;
-
- b = (b << 1) | (b >> 3);
- }
- else
- {
- r = (packed >> 10) & 31;
- g = (packed >> 5) & 31;
- b = packed & 31;
- }
-
- a = 15;
- }
- else
- {
- // translucent 4433 or 4443
- if (!endpoint_index)
- {
- a = (packed >> 12) & 7;
- r = (packed >> 8) & 15;
- g = (packed >> 4) & 15;
- b = (packed >> 1) & 7;
-
- a = a << 1;
-
- r = (r << 1) | (r >> 3);
- g = (g << 1) | (g >> 3);
- b = (b << 2) | (b >> 1);
- }
- else
- {
- a = (packed >> 12) & 7;
- r = (packed >> 8) & 15;
- g = (packed >> 4) & 15;
- b = packed & 15;
-
- a = a << 1;
-
- r = (r << 1) | (r >> 3);
- g = (g << 1) | (g >> 3);
- b = (b << 1) | (b >> 3);
- }
- }
-
- assert((r < 32) && (g < 32) && (b < 32) && (a < 16));
-
- return color_rgba(r, g, b, a);
- }
-
- bool pvrtc4_image::get_interpolated_colors(uint32_t x, uint32_t y, color_rgba* pColors) const
- {
- assert((x < m_width) && (y < m_height));
-
- int block_x0 = (static_cast<int>(x) - 2) >> 2;
- int block_x1 = block_x0 + 1;
- int block_y0 = (static_cast<int>(y) - 2) >> 2;
- int block_y1 = block_y0 + 1;
-
- block_x0 = posmod(block_x0, m_block_width);
- block_x1 = posmod(block_x1, m_block_width);
- block_y0 = posmod(block_y0, m_block_height);
- block_y1 = posmod(block_y1, m_block_height);
-
- pColors[0] = interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0));
- pColors[3] = interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1));
-
- if (get_block_uses_transparent_modulation(x >> 2, y >> 2))
- {
- for (uint32_t c = 0; c < 4; c++)
- {
- uint32_t m = (pColors[0][c] + pColors[3][c]) / 2;
- pColors[1][c] = static_cast<uint8_t>(m);
- pColors[2][c] = static_cast<uint8_t>(m);
- }
- pColors[2][3] = 0;
- return true;
- }
-
- for (uint32_t c = 0; c < 4; c++)
- {
- pColors[1][c] = static_cast<uint8_t>((pColors[0][c] * 5 + pColors[3][c] * 3) / 8);
- pColors[2][c] = static_cast<uint8_t>((pColors[0][c] * 3 + pColors[3][c] * 5) / 8);
- }
-
- return false;
- }
-
- color_rgba pvrtc4_image::get_pixel(uint32_t x, uint32_t y, uint32_t m) const
- {
- assert((x < m_width) && (y < m_height));
-
- int block_x0 = (static_cast<int>(x) - 2) >> 2;
- int block_x1 = block_x0 + 1;
- int block_y0 = (static_cast<int>(y) - 2) >> 2;
- int block_y1 = block_y0 + 1;
-
- block_x0 = posmod(block_x0, m_block_width);
- block_x1 = posmod(block_x1, m_block_width);
- block_y0 = posmod(block_y0, m_block_height);
- block_y1 = posmod(block_y1, m_block_height);
-
- if (get_block_uses_transparent_modulation(x >> 2, y >> 2))
- {
- if (m == 0)
- return interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0));
- else if (m == 3)
- return interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1));
-
- color_rgba l(interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0)));
- color_rgba h(interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1)));
-
- return color_rgba((l[0] + h[0]) / 2, (l[1] + h[1]) / 2, (l[2] + h[2]) / 2, (m == 2) ? 0 : (l[3] + h[3]) / 2);
- }
- else
- {
- if (m == 0)
- return interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0));
- else if (m == 3)
- return interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1));
-
- color_rgba l(interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0)));
- color_rgba h(interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1)));
-
- if (m == 2)
- return color_rgba((l[0] * 3 + h[0] * 5) / 8, (l[1] * 3 + h[1] * 5) / 8, (l[2] * 3 + h[2] * 5) / 8, (l[3] * 3 + h[3] * 5) / 8);
- else
- return color_rgba((l[0] * 5 + h[0] * 3) / 8, (l[1] * 5 + h[1] * 3) / 8, (l[2] * 5 + h[2] * 3) / 8, (l[3] * 5 + h[3] * 3) / 8);
- }
- }
-
-} // basisu
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