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100 lines
2.9 KiB
C
100 lines
2.9 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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