Merge pull request #36098 from godotengine/vulkan

Add initial Vulkan support, master branch goes UNSTABLE

1 files changed, 673 insertions, 0 deletions

diff --git a/thirdparty/basis_universal/transcoder/basisu_global_selector_palette.h b/thirdparty/basis_universal/transcoder/basisu_global_selector_palette.h
new file mode 100644
index 0000000000..b0260541c3
--- /dev/null
+++ b/thirdparty/basis_universal/transcoder/basisu_global_selector_palette.h
@@ -0,0 +1,673 @@
+// basisu_global_selector_palette.h
+// 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.
+#pragma once
+#include "basisu_transcoder_internal.h"
+#include <algorithm>
+
+namespace basist
+{
+	class etc1_global_palette_entry_modifier
+	{
+	public:
+		enum { cTotalBits = 15, cTotalValues = 1 << cTotalBits };
+
+		etc1_global_palette_entry_modifier(uint32_t index = 0)
+		{
+#ifdef _DEBUG
+			static bool s_tested;
+			if (!s_tested)
+			{
+				s_tested = true;
+				for (uint32_t i = 0; i < cTotalValues; i++)
+				{
+					etc1_global_palette_entry_modifier m(i);
+					etc1_global_palette_entry_modifier n = m;
+
+					assert(n.get_index() == i);
+				}
+			}
+#endif
+
+			set_index(index);
+		}
+
+		void set_index(uint32_t index)
+		{
+			assert(index < cTotalValues);
+			m_rot = index & 3;
+			m_flip = (index >> 2) & 1;
+			m_inv = (index >> 3) & 1;
+			m_contrast = (index >> 4) & 3;
+			m_shift = (index >> 6) & 1;
+			m_median = (index >> 7) & 1;
+			m_div = (index >> 8) & 1;
+			m_rand = (index >> 9) & 1;
+			m_dilate = (index >> 10) & 1;
+			m_shift_x = (index >> 11) & 1;
+			m_shift_y = (index >> 12) & 1;
+			m_erode = (index >> 13) & 1;
+			m_high_pass = (index >> 14) & 1;
+		}
+
+		uint32_t get_index() const
+		{
+			return m_rot | (m_flip << 2) | (m_inv << 3) | (m_contrast << 4) | (m_shift << 6) | (m_median << 7) | (m_div << 8) | (m_rand << 9) | (m_dilate << 10) | (m_shift_x << 11) | (m_shift_y << 12) | (m_erode << 13) | (m_high_pass << 14);
+		}
+
+		void clear()
+		{
+			basisu::clear_obj(*this);
+		}
+
+		uint8_t m_contrast;
+		bool m_rand;
+		bool m_median;
+		bool m_div;
+		bool m_shift;
+		bool m_inv;
+		bool m_flip;
+		bool m_dilate;
+		bool m_shift_x;
+		bool m_shift_y;
+		bool m_erode;
+		bool m_high_pass;
+		uint8_t m_rot;
+	};
+
+	enum modifier_types
+	{
+		cModifierContrast,
+		cModifierRand,
+		cModifierMedian,
+		cModifierDiv,
+		cModifierShift,
+		cModifierInv,
+		cModifierFlippedAndRotated,
+		cModifierDilate,
+		cModifierShiftX,
+		cModifierShiftY,
+		cModifierErode,
+		cModifierHighPass,
+		cTotalModifiers
+	};
+
+#define ETC1_GLOBAL_SELECTOR_CODEBOOK_MAX_MOD_BITS (etc1_global_palette_entry_modifier::cTotalBits)
+
+	struct etc1_selector_palette_entry
+	{
+		etc1_selector_palette_entry()
+		{
+			clear();
+		}
+
+		void clear()
+		{
+			basisu::clear_obj(*this);
+		}
+
+		uint8_t operator[] (uint32_t i) const { assert(i < 16); return m_selectors[i]; }
+		uint8_t&operator[] (uint32_t i) { assert(i < 16); return m_selectors[i]; }
+
+		void set_uint32(uint32_t v)
+		{
+			for (uint32_t byte_index = 0; byte_index < 4; byte_index++)
+			{
+				uint32_t b = (v >> (byte_index * 8)) & 0xFF;
+
+				m_selectors[byte_index * 4 + 0] = b & 3;
+				m_selectors[byte_index * 4 + 1] = (b >> 2) & 3;
+				m_selectors[byte_index * 4 + 2] = (b >> 4) & 3;
+				m_selectors[byte_index * 4 + 3] = (b >> 6) & 3;
+			}
+		}
+
+		uint32_t get_uint32() const
+		{
+			return get_byte(0) | (get_byte(1) << 8) | (get_byte(2) << 16) | (get_byte(3) << 24);
+		}
+
+		uint32_t get_byte(uint32_t byte_index) const
+		{
+			assert(byte_index < 4);
+
+			return m_selectors[byte_index * 4 + 0] |
+				(m_selectors[byte_index * 4 + 1] << 2) |
+				(m_selectors[byte_index * 4 + 2] << 4) |
+				(m_selectors[byte_index * 4 + 3] << 6);
+		}
+
+		uint8_t operator()(uint32_t x, uint32_t y) const { assert((x < 4) && (y < 4)); return m_selectors[x + y * 4]; }
+		uint8_t&operator()(uint32_t x, uint32_t y) { assert((x < 4) && (y < 4)); return m_selectors[x + y * 4]; }
+
+		uint32_t calc_distance(const etc1_selector_palette_entry &other) const
+		{
+			uint32_t dist = 0;
+			for (uint32_t i = 0; i < 8; i++)
+			{
+				int delta = static_cast<int>(m_selectors[i]) - static_cast<int>(other.m_selectors[i]);
+				dist += delta * delta;
+			}
+			return dist;
+		}
+
+#if 0
+		uint32_t calc_hamming_dist(const etc1_selector_palette_entry &other) const
+		{
+			uint32_t dist = 0;
+			for (uint32_t i = 0; i < 4; i++)
+				dist += g_hamming_dist[get_byte(i) ^ other.get_byte(i)];
+			return dist;
+		}
+#endif
+
+		etc1_selector_palette_entry get_inverted() const
+		{
+			etc1_selector_palette_entry result;
+
+			for (uint32_t i = 0; i < 16; i++)
+				result.m_selectors[i] = 3 - m_selectors[i];
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_divided() const
+		{
+			etc1_selector_palette_entry result;
+
+			const uint8_t div_selector[4] = { 2, 0, 3, 1 };
+
+			for (uint32_t i = 0; i < 16; i++)
+				result.m_selectors[i] = div_selector[m_selectors[i]];
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_shifted(int delta) const
+		{
+			etc1_selector_palette_entry result;
+
+			for (uint32_t i = 0; i < 16; i++)
+				result.m_selectors[i] = static_cast<uint8_t>(basisu::clamp<int>(m_selectors[i] + delta, 0, 3));
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_randomized() const
+		{
+			uint32_t seed = get_uint32();
+
+			etc1_selector_palette_entry result;
+
+			for (uint32_t y = 0; y < 4; y++)
+			{
+				for (uint32_t x = 0; x < 4; x++)
+				{
+					int s = (*this)(x, y);
+
+					// between 0 and 10
+					uint32_t i = basisd_urand(seed, 6) + basisd_urand(seed, 6);
+					if (i == 0)
+						s -= 2;
+					else if (i == 10)
+						s += 2;
+					else if (i < 3)
+						s -= 1;
+					else if (i > 7)
+						s += 1;
+
+					result(x, y) = static_cast<uint8_t>(basisu::clamp<int>(s, 0, 3));
+				}
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_contrast(int table_index) const
+		{
+			assert(table_index < 4);
+
+			etc1_selector_palette_entry result;
+
+			static const uint8_t s_contrast_tables[4][4] =
+			{
+				{ 0, 1, 2, 3 }, // not used
+				{ 0, 0, 3, 3 },
+				{ 1, 1, 2, 2 },
+				{ 1, 1, 3, 3 }
+			};
+
+			for (uint32_t i = 0; i < 16; i++)
+			{
+				result[i] = s_contrast_tables[table_index][(*this)[i]];
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_dilated() const
+		{
+			etc1_selector_palette_entry result;
+
+			for (uint32_t y = 0; y < 4; y++)
+			{
+				for (uint32_t x = 0; x < 4; x++)
+				{
+					uint32_t max_selector = 0;
+
+					for (int yd = -1; yd <= 1; yd++)
+					{
+						int fy = y + yd;
+						if ((fy < 0) || (fy > 3))
+							continue;
+
+						for (int xd = -1; xd <= 1; xd++)
+						{
+							int fx = x + xd;
+							if ((fx < 0) || (fx > 3))
+								continue;
+
+							max_selector = basisu::maximum<uint32_t>(max_selector, (*this)(fx, fy));
+						}
+					}
+
+					result(x, y) = static_cast<uint8_t>(max_selector);
+				}
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_eroded() const
+		{
+			etc1_selector_palette_entry result;
+
+			for (uint32_t y = 0; y < 4; y++)
+			{
+				for (uint32_t x = 0; x < 4; x++)
+				{
+					uint32_t min_selector = 99;
+
+					for (int yd = -1; yd <= 1; yd++)
+					{
+						int fy = y + yd;
+						if ((fy < 0) || (fy > 3))
+							continue;
+
+						for (int xd = -1; xd <= 1; xd++)
+						{
+							int fx = x + xd;
+							if ((fx < 0) || (fx > 3))
+								continue;
+
+							min_selector = basisu::minimum<uint32_t>(min_selector, (*this)(fx, fy));
+						}
+					}
+
+					result(x, y) = static_cast<uint8_t>(min_selector);
+				}
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_shift_x() const
+		{
+			etc1_selector_palette_entry result;
+
+			for (uint32_t y = 0; y < 4; y++)
+			{
+				for (uint32_t x = 0; x < 4; x++)
+				{
+					int sx = x - 1;
+					if (sx < 0)
+						sx = 0;
+
+					result(x, y) = (*this)(sx, y);
+				}
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_shift_y() const
+		{
+			etc1_selector_palette_entry result;
+
+			for (uint32_t y = 0; y < 4; y++)
+			{
+				int sy = y - 1;
+				if (sy < 0)
+					sy = 3;
+
+				for (uint32_t x = 0; x < 4; x++)
+					result(x, y) = (*this)(x, sy);
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_median() const
+		{
+			etc1_selector_palette_entry result;
+
+			for (uint32_t y = 0; y < 4; y++)
+			{
+				for (uint32_t x = 0; x < 4; x++)
+				{
+					// ABC
+					// D F
+					// GHI
+
+					uint8_t selectors[8];
+					uint32_t n = 0;
+
+					for (int yd = -1; yd <= 1; yd++)
+					{
+						int fy = y + yd;
+						if ((fy < 0) || (fy > 3))
+							continue;
+
+						for (int xd = -1; xd <= 1; xd++)
+						{
+							if ((xd | yd) == 0)
+								continue;
+
+							int fx = x + xd;
+							if ((fx < 0) || (fx > 3))
+								continue;
+
+							selectors[n++] = (*this)(fx, fy);
+						}
+					}
+
+					std::sort(selectors, selectors + n);
+
+					result(x, y) = selectors[n / 2];
+				}
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_high_pass() const
+		{
+			etc1_selector_palette_entry result;
+
+			static const int kernel[3][3] =
+			{
+				{ 0,  -1,  0 },
+				{ -1,  8, -1 },
+				{ 0,  -1,  0 }
+			};
+
+			for (uint32_t y = 0; y < 4; y++)
+			{
+				for (uint32_t x = 0; x < 4; x++)
+				{
+					// ABC
+					// D F
+					// GHI
+
+					int sum = 0;
+
+					for (int yd = -1; yd <= 1; yd++)
+					{
+						int fy = y + yd;
+						fy = basisu::clamp<int>(fy, 0, 3);
+
+						for (int xd = -1; xd <= 1; xd++)
+						{
+							int fx = x + xd;
+							fx = basisu::clamp<int>(fx, 0, 3);
+
+							int k = (*this)(fx, fy);
+							sum += k * kernel[yd + 1][xd + 1];
+						}
+					}
+
+					sum = sum / 4;
+
+					result(x, y) = static_cast<uint8_t>(basisu::clamp<int>(sum, 0, 3));
+				}
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_flipped_and_rotated(bool flip, uint32_t rotation_index) const
+		{
+			etc1_selector_palette_entry temp;
+
+			if (flip)
+			{
+				for (uint32_t y = 0; y < 4; y++)
+					for (uint32_t x = 0; x < 4; x++)
+						temp(x, y) = (*this)(x, 3 - y);
+			}
+			else
+			{
+				temp = *this;
+			}
+
+			etc1_selector_palette_entry result;
+
+			switch (rotation_index)
+			{
+			case 0:
+				result = temp;
+				break;
+			case 1:
+				for (uint32_t y = 0; y < 4; y++)
+					for (uint32_t x = 0; x < 4; x++)
+						result(x, y) = temp(y, 3 - x);
+				break;
+			case 2:
+				for (uint32_t y = 0; y < 4; y++)
+					for (uint32_t x = 0; x < 4; x++)
+						result(x, y) = temp(3 - x, 3 - y);
+				break;
+			case 3:
+				for (uint32_t y = 0; y < 4; y++)
+					for (uint32_t x = 0; x < 4; x++)
+						result(x, y) = temp(3 - y, x);
+				break;
+			default:
+				assert(0);
+				break;
+			}
+
+			return result;
+		}
+
+		etc1_selector_palette_entry get_modified(const etc1_global_palette_entry_modifier &modifier) const
+		{
+			etc1_selector_palette_entry r(*this);
+
+			if (modifier.m_shift_x)
+				r = r.get_shift_x();
+
+			if (modifier.m_shift_y)
+				r = r.get_shift_y();
+
+			r = r.get_flipped_and_rotated(modifier.m_flip != 0, modifier.m_rot);
+
+			if (modifier.m_dilate)
+				r = r.get_dilated();
+
+			if (modifier.m_erode)
+				r = r.get_eroded();
+
+			if (modifier.m_high_pass)
+				r = r.get_high_pass();
+
+			if (modifier.m_rand)
+				r = r.get_randomized();
+
+			if (modifier.m_div)
+				r = r.get_divided();
+
+			if (modifier.m_shift)
+				r = r.get_shifted(1);
+
+			if (modifier.m_contrast)
+				r = r.get_contrast(modifier.m_contrast);
+
+			if (modifier.m_inv)
+				r = r.get_inverted();
+
+			if (modifier.m_median)
+				r = r.get_median();
+
+			return r;
+		}
+
+		etc1_selector_palette_entry apply_modifier(modifier_types mod_type, const etc1_global_palette_entry_modifier &modifier) const
+		{
+			switch (mod_type)
+			{
+			case cModifierContrast:
+				return get_contrast(modifier.m_contrast);
+			case cModifierRand:
+				return get_randomized();
+			case cModifierMedian:
+				return get_median();
+			case cModifierDiv:
+				return get_divided();
+			case cModifierShift:
+				return get_shifted(1);
+			case cModifierInv:
+				return get_inverted();
+			case cModifierFlippedAndRotated:
+				return get_flipped_and_rotated(modifier.m_flip != 0, modifier.m_rot);
+			case cModifierDilate:
+				return get_dilated();
+			case cModifierShiftX:
+				return get_shift_x();
+			case cModifierShiftY:
+				return get_shift_y();
+			case cModifierErode:
+				return get_eroded();
+			case cModifierHighPass:
+				return get_high_pass();
+			default:
+				assert(0);
+				break;
+			}
+
+			return *this;
+		}
+
+		etc1_selector_palette_entry get_modified(const etc1_global_palette_entry_modifier &modifier, uint32_t num_order, const modifier_types *pOrder) const
+		{
+			etc1_selector_palette_entry r(*this);
+
+			for (uint32_t i = 0; i < num_order; i++)
+			{
+				r = r.apply_modifier(pOrder[i], modifier);
+			}
+
+			return r;
+		}
+
+		bool operator< (const etc1_selector_palette_entry &other) const
+		{
+			for (uint32_t i = 0; i < 16; i++)
+			{
+				if (m_selectors[i] < other.m_selectors[i])
+					return true;
+				else if (m_selectors[i] != other.m_selectors[i])
+					return false;
+			}
+
+			return false;
+		}
+
+		bool operator== (const etc1_selector_palette_entry &other) const
+		{
+			for (uint32_t i = 0; i < 16; i++)
+			{
+				if (m_selectors[i] != other.m_selectors[i])
+					return false;
+			}
+
+			return true;
+		}
+
+	private:
+		uint8_t m_selectors[16];
+	};
+
+	typedef std::vector<etc1_selector_palette_entry> etc1_selector_palette_entry_vec;
+
+	extern const uint32_t g_global_selector_cb[];
+	extern const uint32_t g_global_selector_cb_size;
+
+#define ETC1_GLOBAL_SELECTOR_CODEBOOK_MAX_PAL_BITS (12)
+
+	struct etc1_global_selector_codebook_entry_id
+	{
+		uint32_t m_palette_index;
+		etc1_global_palette_entry_modifier m_modifier;
+
+		etc1_global_selector_codebook_entry_id(uint32_t palette_index, const etc1_global_palette_entry_modifier &modifier) : m_palette_index(palette_index), m_modifier(modifier) { }
+
+		etc1_global_selector_codebook_entry_id() { }
+
+		void set(uint32_t palette_index, const etc1_global_palette_entry_modifier &modifier) { m_palette_index = palette_index; m_modifier = modifier; }
+	};
+
+	typedef std::vector<etc1_global_selector_codebook_entry_id> etc1_global_selector_codebook_entry_id_vec;
+
+	class etc1_global_selector_codebook
+	{
+	public:
+		etc1_global_selector_codebook() { }
+		etc1_global_selector_codebook(uint32_t N, const uint32_t *pEntries) { init(N, pEntries); }
+
+		void init(uint32_t N, const uint32_t* pEntries);
+
+		void print_code(FILE *pFile);
+
+		void clear()
+		{
+			m_palette.clear();
+		}
+
+		uint32_t size() const { return (uint32_t)m_palette.size(); }
+
+		const etc1_selector_palette_entry_vec &get_palette() const
+		{
+			return m_palette;
+		}
+
+		etc1_selector_palette_entry get_entry(uint32_t palette_index) const
+		{
+			return m_palette[palette_index];
+		}
+
+		etc1_selector_palette_entry get_entry(uint32_t palette_index, const etc1_global_palette_entry_modifier &modifier) const
+		{
+			return m_palette[palette_index].get_modified(modifier);
+		}
+
+		etc1_selector_palette_entry get_entry(const etc1_global_selector_codebook_entry_id &id) const
+		{
+			return m_palette[id.m_palette_index].get_modified(id.m_modifier);
+		}
+
+		etc1_selector_palette_entry_vec m_palette;
+	};
+
+} // namespace basist