mirror of
https://github.com/libretro/ppsspp.git
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182 lines
5.6 KiB
C++
182 lines
5.6 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include "Common/Common.h"
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#include "Core/MemMap.h"
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#include "GPU/ge_constants.h"
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#include "GPU/GPUState.h"
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// All these DXT structs are in the reverse order, as compared to PC.
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// On PC, alpha comes before color, and interpolants are before the tile data.
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struct DXT1Block {
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u8 lines[4];
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u16_le color1;
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u16_le color2;
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};
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struct DXT3Block {
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DXT1Block color;
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u16_le alphaLines[4];
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};
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struct DXT5Block {
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DXT1Block color;
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u32_le alphadata2;
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u16_le alphadata1;
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u8 alpha1; u8 alpha2;
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};
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void DecodeDXT1Block(u32 *dst, const DXT1Block *src, int pitch, bool ignore1bitAlpha = false);
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void DecodeDXT3Block(u32 *dst, const DXT3Block *src, int pitch);
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void DecodeDXT5Block(u32 *dst, const DXT5Block *src, int pitch);
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static const u8 textureBitsPerPixel[16] = {
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16, //GE_TFMT_5650,
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16, //GE_TFMT_5551,
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16, //GE_TFMT_4444,
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32, //GE_TFMT_8888,
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4, //GE_TFMT_CLUT4,
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8, //GE_TFMT_CLUT8,
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16, //GE_TFMT_CLUT16,
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32, //GE_TFMT_CLUT32,
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4, //GE_TFMT_DXT1,
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8, //GE_TFMT_DXT3,
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8, //GE_TFMT_DXT5,
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0, // INVALID,
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0, // INVALID,
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0, // INVALID,
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0, // INVALID,
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0, // INVALID,
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};
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// Masks to downalign bufw to 16 bytes, and wrap at 2048.
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static const u32 textureAlignMask16[16] = {
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0x7FF & ~(((8 * 16) / 16) - 1), //GE_TFMT_5650,
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0x7FF & ~(((8 * 16) / 16) - 1), //GE_TFMT_5551,
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0x7FF & ~(((8 * 16) / 16) - 1), //GE_TFMT_4444,
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0x7FF & ~(((8 * 16) / 32) - 1), //GE_TFMT_8888,
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0x7FF & ~(((8 * 16) / 4) - 1), //GE_TFMT_CLUT4,
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0x7FF & ~(((8 * 16) / 8) - 1), //GE_TFMT_CLUT8,
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0x7FF & ~(((8 * 16) / 16) - 1), //GE_TFMT_CLUT16,
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0x7FF & ~(((8 * 16) / 32) - 1), //GE_TFMT_CLUT32,
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0x7FF, //GE_TFMT_DXT1,
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0x7FF, //GE_TFMT_DXT3,
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0x7FF, //GE_TFMT_DXT5,
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0, // INVALID,
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0, // INVALID,
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0, // INVALID,
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0, // INVALID,
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0, // INVALID,
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};
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static inline u32 GetTextureBufw(int level, u32 texaddr, GETextureFormat format) {
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// This is a hack to allow for us to draw the huge PPGe texture, which is always in kernel ram.
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if (texaddr < PSP_GetUserMemoryBase())
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return gstate.texbufwidth[level] & 0x1FFF;
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u32 bufw = gstate.texbufwidth[level] & textureAlignMask16[format];
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if (bufw == 0) {
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// If it's less than 16 bytes, use 16 bytes.
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bufw = (8 * 16) / textureBitsPerPixel[format];
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}
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return bufw;
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}
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template <typename IndexT, typename ClutT>
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inline void DeIndexTexture(ClutT *dest, const IndexT *indexed, int length, const ClutT *clut) {
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// Usually, there is no special offset, mask, or shift.
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const bool nakedIndex = gstate.isClutIndexSimple();
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if (nakedIndex) {
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if (sizeof(IndexT) == 1) {
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for (int i = 0; i < length; ++i) {
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*dest++ = clut[*indexed++];
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}
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} else {
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for (int i = 0; i < length; ++i) {
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*dest++ = clut[(*indexed++) & 0xFF];
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}
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}
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} else {
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for (int i = 0; i < length; ++i) {
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*dest++ = clut[gstate.transformClutIndex(*indexed++)];
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}
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}
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}
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template <typename IndexT, typename ClutT>
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inline void DeIndexTexture(ClutT *dest, const u32 texaddr, int length, const ClutT *clut) {
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const IndexT *indexed = (const IndexT *) Memory::GetPointer(texaddr);
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DeIndexTexture(dest, indexed, length, clut);
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}
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template <typename ClutT>
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inline void DeIndexTexture4(ClutT *dest, const u8 *indexed, int length, const ClutT *clut) {
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// Usually, there is no special offset, mask, or shift.
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const bool nakedIndex = gstate.isClutIndexSimple();
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if (nakedIndex) {
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for (int i = 0; i < length; i += 2) {
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u8 index = *indexed++;
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dest[i + 0] = clut[(index >> 0) & 0xf];
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dest[i + 1] = clut[(index >> 4) & 0xf];
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}
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} else {
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for (int i = 0; i < length; i += 2) {
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u8 index = *indexed++;
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dest[i + 0] = clut[gstate.transformClutIndex((index >> 0) & 0xf)];
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dest[i + 1] = clut[gstate.transformClutIndex((index >> 4) & 0xf)];
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}
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}
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}
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template <typename ClutT>
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inline void DeIndexTexture4Optimal(ClutT *dest, const u8 *indexed, int length, ClutT color) {
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for (int i = 0; i < length; i += 2) {
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u8 index = *indexed++;
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dest[i + 0] = color | ((index >> 0) & 0xf);
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dest[i + 1] = color | ((index >> 4) & 0xf);
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}
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}
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template <>
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inline void DeIndexTexture4Optimal<u16>(u16 *dest, const u8 *indexed, int length, u16 color) {
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const u16_le *indexed16 = (const u16_le *)indexed;
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const u32 color32 = (color << 16) | color;
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u32 *dest32 = (u32 *)dest;
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for (int i = 0; i < length / 2; i += 2) {
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u16 index = *indexed16++;
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dest32[i + 0] = color32 | ((index & 0x00f0) << 12) | ((index & 0x000f) >> 0);
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dest32[i + 1] = color32 | ((index & 0xf000) << 4) | ((index & 0x0f00) >> 8);
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}
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}
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template <typename ClutT>
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inline void DeIndexTexture4(ClutT *dest, const u32 texaddr, int length, const ClutT *clut) {
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const u8 *indexed = (const u8 *) Memory::GetPointer(texaddr);
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DeIndexTexture4(dest, indexed, length, clut);
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}
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template <typename ClutT>
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inline void DeIndexTexture4Optimal(ClutT *dest, const u32 texaddr, int length, ClutT color) {
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const u8 *indexed = (const u8 *) Memory::GetPointer(texaddr);
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DeIndexTexture4Optimal(dest, indexed, length, color);
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}
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