forked from dolphin-emu/dolphin
590 lines
14 KiB
C++
590 lines
14 KiB
C++
// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <cmath>
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#include "Common/Common.h"
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#include "VideoCommon/LookUpTables.h"
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#include "VideoCommon/sfont.inc"
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#include "VideoCommon/TextureDecoder.h"
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static bool TexFmt_Overlay_Enable = false;
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static bool TexFmt_Overlay_Center = false;
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// TRAM
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// STATE_TO_SAVE
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GC_ALIGNED16(u8 texMem[TMEM_SIZE]);
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int TexDecoder_GetTexelSizeInNibbles(int format)
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{
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switch (format & 0x3f) {
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case GX_TF_I4: return 1;
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case GX_TF_I8: return 2;
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case GX_TF_IA4: return 2;
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case GX_TF_IA8: return 4;
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case GX_TF_RGB565: return 4;
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case GX_TF_RGB5A3: return 4;
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case GX_TF_RGBA8: return 8;
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case GX_TF_C4: return 1;
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case GX_TF_C8: return 2;
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case GX_TF_C14X2: return 4;
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case GX_TF_CMPR: return 1;
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case GX_CTF_R4: return 1;
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case GX_CTF_RA4: return 2;
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case GX_CTF_RA8: return 4;
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case GX_CTF_YUVA8: return 8;
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case GX_CTF_A8: return 2;
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case GX_CTF_R8: return 2;
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case GX_CTF_G8: return 2;
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case GX_CTF_B8: return 2;
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case GX_CTF_RG8: return 4;
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case GX_CTF_GB8: return 4;
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case GX_TF_Z8: return 2;
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case GX_TF_Z16: return 4;
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case GX_TF_Z24X8: return 8;
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case GX_CTF_Z4: return 1;
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case GX_CTF_Z8M: return 2;
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case GX_CTF_Z8L: return 2;
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case GX_CTF_Z16L: return 4;
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default: return 1;
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}
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}
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int TexDecoder_GetTextureSizeInBytes(int width, int height, int format)
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{
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return (width * height * TexDecoder_GetTexelSizeInNibbles(format)) / 2;
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}
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int TexDecoder_GetBlockWidthInTexels(u32 format)
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{
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switch (format)
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{
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case GX_TF_I4: return 8;
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case GX_TF_I8: return 8;
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case GX_TF_IA4: return 8;
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case GX_TF_IA8: return 4;
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case GX_TF_RGB565: return 4;
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case GX_TF_RGB5A3: return 4;
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case GX_TF_RGBA8: return 4;
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case GX_TF_C4: return 8;
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case GX_TF_C8: return 8;
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case GX_TF_C14X2: return 4;
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case GX_TF_CMPR: return 8;
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case GX_CTF_R4: return 8;
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case GX_CTF_RA4: return 8;
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case GX_CTF_RA8: return 4;
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case GX_CTF_A8: return 8;
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case GX_CTF_R8: return 8;
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case GX_CTF_G8: return 8;
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case GX_CTF_B8: return 8;
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case GX_CTF_RG8: return 4;
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case GX_CTF_GB8: return 4;
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case GX_TF_Z8: return 8;
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case GX_TF_Z16: return 4;
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case GX_TF_Z24X8: return 4;
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case GX_CTF_Z4: return 8;
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case GX_CTF_Z8M: return 8;
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case GX_CTF_Z8L: return 8;
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case GX_CTF_Z16L: return 4;
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default:
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ERROR_LOG(VIDEO, "Unsupported Texture Format (%08x)! (GetBlockWidthInTexels)", format);
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return 8;
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}
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}
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int TexDecoder_GetBlockHeightInTexels(u32 format)
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{
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switch (format)
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{
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case GX_TF_I4: return 8;
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case GX_TF_I8: return 4;
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case GX_TF_IA4: return 4;
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case GX_TF_IA8: return 4;
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case GX_TF_RGB565: return 4;
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case GX_TF_RGB5A3: return 4;
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case GX_TF_RGBA8: return 4;
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case GX_TF_C4: return 8;
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case GX_TF_C8: return 4;
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case GX_TF_C14X2: return 4;
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case GX_TF_CMPR: return 8;
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case GX_CTF_R4: return 8;
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case GX_CTF_RA4: return 4;
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case GX_CTF_RA8: return 4;
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case GX_CTF_A8: return 4;
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case GX_CTF_R8: return 4;
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case GX_CTF_G8: return 4;
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case GX_CTF_B8: return 4;
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case GX_CTF_RG8: return 4;
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case GX_CTF_GB8: return 4;
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case GX_TF_Z8: return 4;
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case GX_TF_Z16: return 4;
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case GX_TF_Z24X8: return 4;
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case GX_CTF_Z4: return 8;
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case GX_CTF_Z8M: return 4;
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case GX_CTF_Z8L: return 4;
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case GX_CTF_Z16L: return 4;
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default:
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ERROR_LOG(VIDEO, "Unsupported Texture Format (%08x)! (GetBlockHeightInTexels)", format);
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return 4;
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}
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}
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//returns bytes
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int TexDecoder_GetPaletteSize(int format)
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{
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switch (format)
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{
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case GX_TF_C4: return 16 * 2;
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case GX_TF_C8: return 256 * 2;
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case GX_TF_C14X2: return 16384 * 2;
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default:
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return 0;
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}
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}
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void TexDecoder_SetTexFmtOverlayOptions(bool enable, bool center)
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{
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TexFmt_Overlay_Enable = enable;
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TexFmt_Overlay_Center = center;
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}
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static const char* texfmt[] = {
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// pixel
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"I4", "I8", "IA4", "IA8",
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"RGB565", "RGB5A3", "RGBA8", "0x07",
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"C4", "C8", "C14X2", "0x0B",
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"0x0C", "0x0D", "CMPR", "0x0F",
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// Z-buffer
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"0x10", "Z8", "0x12", "Z16",
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"0x14", "0x15", "Z24X8", "0x17",
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"0x18", "0x19", "0x1A", "0x1B",
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"0x1C", "0x1D", "0x1E", "0x1F",
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// pixel + copy
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"CR4", "0x21", "CRA4", "CRA8",
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"0x24", "0x25", "CYUVA8", "CA8",
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"CR8", "CG8", "CB8", "CRG8",
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"CGB8", "0x2D", "0x2E", "0x2F",
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// Z + copy
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"CZ4", "0x31", "0x32", "0x33",
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"0x34", "0x35", "0x36", "0x37",
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"0x38", "CZ8M", "CZ8L", "0x3B",
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"CZ16L", "0x3D", "0x3E", "0x3F",
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};
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static void TexDecoder_DrawOverlay(u8 *dst, int width, int height, int texformat)
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{
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int w = std::min(width, 40);
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int h = std::min(height, 10);
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int xoff = (width - w) >> 1;
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int yoff = (height - h) >> 1;
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if (!TexFmt_Overlay_Center)
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{
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xoff = 0;
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yoff = 0;
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}
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const char* fmt = texfmt[texformat & 15];
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while (*fmt)
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{
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int xcnt = 0;
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int nchar = sfont_map[(int)*fmt];
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const unsigned char *ptr = sfont_raw[nchar]; // each char is up to 9x10
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for (int x = 0; x < 9; x++)
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{
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if (ptr[x] == 0x78)
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break;
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xcnt++;
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}
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for (int y = 0; y < 10; y++)
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{
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for (int x = 0; x < xcnt; x++)
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{
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int *dtp = (int*)dst;
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dtp[(y + yoff) * width + x + xoff] = ptr[x] ? 0xFFFFFFFF : 0xFF000000;
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}
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ptr += 9;
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}
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xoff += xcnt;
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fmt++;
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}
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}
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void TexDecoder_Decode(u8 *dst, const u8 *src, int width, int height, int texformat, const u8* tlut, TlutFormat tlutfmt)
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{
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_TexDecoder_DecodeImpl((u32*)dst, src, width, height, texformat, tlut, tlutfmt);
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if (TexFmt_Overlay_Enable)
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TexDecoder_DrawOverlay(dst, width, height, texformat);
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}
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static inline u32 DecodePixel_IA8(u16 val)
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{
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int a = val & 0xFF;
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int i = val >> 8;
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return i | (i << 8) | (i << 16) | (a << 24);
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}
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static inline u32 DecodePixel_RGB565(u16 val)
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{
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int r,g,b,a;
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r=Convert5To8((val>>11) & 0x1f);
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g=Convert6To8((val>>5 ) & 0x3f);
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b=Convert5To8((val ) & 0x1f);
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a=0xFF;
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return r | (g<<8) | (b << 16) | (a << 24);
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}
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static inline u32 DecodePixel_RGB5A3(u16 val)
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{
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int r,g,b,a;
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if ((val&0x8000))
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{
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r=Convert5To8((val>>10) & 0x1f);
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g=Convert5To8((val>>5 ) & 0x1f);
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b=Convert5To8((val ) & 0x1f);
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a=0xFF;
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}
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else
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{
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a=Convert3To8((val>>12) & 0x7);
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r=Convert4To8((val>>8 ) & 0xf);
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g=Convert4To8((val>>4 ) & 0xf);
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b=Convert4To8((val ) & 0xf);
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}
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return r | (g<<8) | (b << 16) | (a << 24);
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}
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static inline u32 DecodePixel_Paletted(u16 pixel, TlutFormat tlutfmt)
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{
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switch (tlutfmt)
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{
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case GX_TL_IA8:
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return DecodePixel_IA8(pixel);
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case GX_TL_RGB565:
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return DecodePixel_RGB565(Common::swap16(pixel));
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case GX_TL_RGB5A3:
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return DecodePixel_RGB5A3(Common::swap16(pixel));
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default:
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return 0;
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}
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}
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struct DXTBlock
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{
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u16 color1;
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u16 color2;
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u8 lines[4];
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};
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static inline u32 MakeRGBA(int r, int g, int b, int a)
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{
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return (a<<24)|(b<<16)|(g<<8)|r;
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}
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void TexDecoder_DecodeTexel(u8 *dst, const u8 *src, int s, int t, int imageWidth, int texformat, const u8* tlut_, TlutFormat tlutfmt)
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{
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/* General formula for computing texture offset
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//
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u16 sBlk = s / blockWidth;
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u16 tBlk = t / blockHeight;
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u16 widthBlks = (width / blockWidth) + 1;
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u32 base = (tBlk * widthBlks + sBlk) * blockWidth * blockHeight;
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u16 blkS = s & (blockWidth - 1);
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u16 blkT = t & (blockHeight - 1);
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u32 blkOff = blkT * blockWidth + blkS;
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*/
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switch (texformat)
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{
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case GX_TF_C4:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 3;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 7;
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u32 blkOff = (blkT << 3) + blkS;
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int rs = (blkOff & 1)?0:4;
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u32 offset = base + (blkOff >> 1);
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u8 val = (*(src + offset) >> rs) & 0xF;
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u16 *tlut = (u16*) tlut_;
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*((u32*)dst) = DecodePixel_Paletted(tlut[val], tlutfmt);
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}
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break;
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case GX_TF_I4:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 3;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 7;
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u32 blkOff = (blkT << 3) + blkS;
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int rs = (blkOff & 1)?0:4;
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u32 offset = base + (blkOff >> 1);
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u8 val = (*(src + offset) >> rs) & 0xF;
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val = Convert4To8(val);
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dst[0] = val;
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dst[1] = val;
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dst[2] = val;
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dst[3] = val;
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}
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break;
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case GX_TF_I8:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 3) + blkS;
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u8 val = *(src + base + blkOff);
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dst[0] = val;
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dst[1] = val;
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dst[2] = val;
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dst[3] = val;
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}
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break;
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case GX_TF_C8:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 3) + blkS;
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u8 val = *(src + base + blkOff);
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u16 *tlut = (u16*) tlut_;
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*((u32*)dst) = DecodePixel_Paletted(tlut[val], tlutfmt);
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}
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break;
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case GX_TF_IA4:
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{
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u16 sBlk = s >> 3;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 3) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5;
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u16 blkS = s & 7;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 3) + blkS;
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u8 val = *(src + base + blkOff);
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const u8 a = Convert4To8(val>>4);
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const u8 l = Convert4To8(val&0xF);
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dst[0] = l;
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dst[1] = l;
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dst[2] = l;
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dst[3] = a;
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}
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break;
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case GX_TF_IA8:
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{
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u16 sBlk = s >> 2;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 2) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 4;
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u16 blkS = s & 3;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 2) + blkS;
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u32 offset = (base + blkOff) << 1;
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const u16* valAddr = (u16*)(src + offset);
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*((u32*)dst) = DecodePixel_IA8(*valAddr);
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}
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break;
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case GX_TF_C14X2:
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{
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u16 sBlk = s >> 2;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 2) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 4;
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u16 blkS = s & 3;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 2) + blkS;
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u32 offset = (base + blkOff) << 1;
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const u16* valAddr = (u16*)(src + offset);
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u16 val = Common::swap16(*valAddr) & 0x3FFF;
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u16 *tlut = (u16*) tlut_;
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*((u32*)dst) = DecodePixel_Paletted(tlut[val], tlutfmt);
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}
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break;
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case GX_TF_RGB565:
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{
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u16 sBlk = s >> 2;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 2) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 4;
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u16 blkS = s & 3;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 2) + blkS;
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u32 offset = (base + blkOff) << 1;
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const u16* valAddr = (u16*)(src + offset);
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*((u32*)dst) = DecodePixel_RGB565(Common::swap16(*valAddr));
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}
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break;
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case GX_TF_RGB5A3:
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{
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u16 sBlk = s >> 2;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 2) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 4;
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u16 blkS = s & 3;
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u16 blkT = t & 3;
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u32 blkOff = (blkT << 2) + blkS;
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u32 offset = (base + blkOff) << 1;
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const u16* valAddr = (u16*)(src + offset);
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*((u32*)dst) = DecodePixel_RGB5A3(Common::swap16(*valAddr));
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}
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break;
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case GX_TF_RGBA8:
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{
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u16 sBlk = s >> 2;
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u16 tBlk = t >> 2;
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u16 widthBlks = (imageWidth >> 2) + 1;
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u32 base = (tBlk * widthBlks + sBlk) << 5; // shift by 5 is correct
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u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blkOff = (blkT << 2) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 1 ;
|
|
const u8* valAddr = src + offset;
|
|
|
|
dst[3] = valAddr[0];
|
|
dst[0] = valAddr[1];
|
|
dst[1] = valAddr[32];
|
|
dst[2] = valAddr[33];
|
|
}
|
|
break;
|
|
case GX_TF_CMPR:
|
|
{
|
|
u16 sDxt = s >> 2;
|
|
u16 tDxt = t >> 2;
|
|
|
|
u16 sBlk = sDxt >> 1;
|
|
u16 tBlk = tDxt >> 1;
|
|
u16 widthBlks = (imageWidth >> 3) + 1;
|
|
u32 base = (tBlk * widthBlks + sBlk) << 2;
|
|
u16 blkS = sDxt & 1;
|
|
u16 blkT = tDxt & 1;
|
|
u32 blkOff = (blkT << 1) + blkS;
|
|
|
|
u32 offset = (base + blkOff) << 3;
|
|
|
|
const DXTBlock* dxtBlock = (const DXTBlock*)(src + offset);
|
|
|
|
u16 c1 = Common::swap16(dxtBlock->color1);
|
|
u16 c2 = Common::swap16(dxtBlock->color2);
|
|
int blue1 = Convert5To8(c1 & 0x1F);
|
|
int blue2 = Convert5To8(c2 & 0x1F);
|
|
int green1 = Convert6To8((c1 >> 5) & 0x3F);
|
|
int green2 = Convert6To8((c2 >> 5) & 0x3F);
|
|
int red1 = Convert5To8((c1 >> 11) & 0x1F);
|
|
int red2 = Convert5To8((c2 >> 11) & 0x1F);
|
|
|
|
u16 ss = s & 3;
|
|
u16 tt = t & 3;
|
|
|
|
int colorSel = dxtBlock->lines[tt];
|
|
int rs = 6 - (ss << 1);
|
|
colorSel = (colorSel >> rs) & 3;
|
|
colorSel |= c1 > c2?0:4;
|
|
|
|
u32 color = 0;
|
|
|
|
switch (colorSel)
|
|
{
|
|
case 0:
|
|
case 4:
|
|
color = MakeRGBA(red1, green1, blue1, 255);
|
|
break;
|
|
case 1:
|
|
case 5:
|
|
color = MakeRGBA(red2, green2, blue2, 255);
|
|
break;
|
|
case 2:
|
|
color = MakeRGBA(red1+(red2-red1)/3, green1+(green2-green1)/3, blue1+(blue2-blue1)/3, 255);
|
|
break;
|
|
case 3:
|
|
color = MakeRGBA(red2+(red1-red2)/3, green2+(green1-green2)/3, blue2+(blue1-blue2)/3, 255);
|
|
break;
|
|
case 6:
|
|
color = MakeRGBA((int)ceil((float)(red1+red2)/2), (int)ceil((float)(green1+green2)/2), (int)ceil((float)(blue1+blue2)/2), 255);
|
|
break;
|
|
case 7:
|
|
color = MakeRGBA(red2, green2, blue2, 0);
|
|
break;
|
|
default:
|
|
color = 0;
|
|
break;
|
|
}
|
|
|
|
*((u32*)dst) = color;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void TexDecoder_DecodeTexelRGBA8FromTmem(u8 *dst, const u8 *src_ar, const u8* src_gb, int s, int t, int imageWidth)
|
|
{
|
|
u16 sBlk = s >> 2;
|
|
u16 tBlk = t >> 2;
|
|
u16 widthBlks = (imageWidth >> 2) + 1; // TODO: Looks wrong. Shouldn't this be ((imageWidth-1)>>2)+1 ?
|
|
u32 base_ar = (tBlk * widthBlks + sBlk) << 4;
|
|
u32 base_gb = (tBlk * widthBlks + sBlk) << 4;
|
|
u16 blkS = s & 3;
|
|
u16 blkT = t & 3;
|
|
u32 blk_off = (blkT << 2) + blkS;
|
|
|
|
u32 offset_ar = (base_ar + blk_off) << 1;
|
|
u32 offset_gb = (base_gb + blk_off) << 1;
|
|
const u8* val_addr_ar = src_ar + offset_ar;
|
|
const u8* val_addr_gb = src_gb + offset_gb;
|
|
|
|
dst[3] = val_addr_ar[0]; // A
|
|
dst[0] = val_addr_ar[1]; // R
|
|
dst[1] = val_addr_gb[0]; // G
|
|
dst[2] = val_addr_gb[1]; // B
|
|
}
|
|
|
|
void TexDecoder_DecodeRGBA8FromTmem(u8* dst, const u8 *src_ar, const u8 *src_gb, int width, int height)
|
|
{
|
|
// TODO for someone who cares: Make this less slow!
|
|
for (int y = 0; y < height; ++y)
|
|
{
|
|
for (int x = 0; x < width; ++x)
|
|
{
|
|
TexDecoder_DecodeTexelRGBA8FromTmem(dst, src_ar, src_gb, x, y, width-1);
|
|
dst += 4;
|
|
}
|
|
}
|
|
}
|