mirror of
https://github.com/jmarshall23/CnC_Remastered_Collection.git
synced 2026-08-12 08:00:55 +02:00
Used additional Chronoshift code to remove legacy assembly for stamp/icon rendering.
This commit is contained in:
Justin Marshall
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/**
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* @file
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*
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* @author CCHyper
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* @author OmniBlade
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*
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* @brief Low level functions for loading and rendering C&C terrain tilesets.
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*
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* @copyright Chronoshift is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version
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* 2 of the License, or (at your option) any later version.
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* A full copy of the GNU General Public License can be found in
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* LICENSE
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*/
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#include "FUNCTION.H"
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#include "gbuffer.h"
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#include <cstring>
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using std::memcpy;
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class GraphicViewPortClass;
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#define TD_TILESET_CHECK 0x20
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/**
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* @brief union is to handle the parts of the header which vary between TD and RA format tiles.
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*/
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struct IconControlType
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{
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uint8_t* Get_Icon_Data()
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{
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if (td.icons == TD_TILESET_CHECK) {
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return reinterpret_cast<uint8_t*>(this) + td.icons;
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}
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else {
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return reinterpret_cast<uint8_t*>(this) + ra.icons;
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}
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}
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uint8_t* Get_Icon_Map()
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{
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if (td.icons == TD_TILESET_CHECK) {
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return reinterpret_cast<uint8_t*>(this) + td.map;
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}
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else {
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return reinterpret_cast<uint8_t*>(this) + ra.map;
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}
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}
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int16_t width; // always 24 (ICON_WIDTH)
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int16_t height; // always 24 (ICON_HEIGHT)
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int16_t count; // count of cells in set, not same as images
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int16_t allocated; // is treated like a bool, always 0 in the file?
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union
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{
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struct
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{
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int32_t size; // filesize
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int32_t icons; // always 0x00000020
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int32_t palettes; // seems to always be 0x00000000
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int32_t remaps; // unknown, bitfield?
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int32_t trans_flag; // array of images length, unknown
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int32_t map; // image index for each cell
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} td;
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struct
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{
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int16_t map_width; // tile width in cells
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int16_t map_height; // tile height in cells
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int32_t size; // filesize
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int32_t icons; // always 0x00000028
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int32_t palettes; // seems to always be 0x00000000
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int32_t remaps; // unknown, bitfield?
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int32_t trans_flag; // array of images length, unknown
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int32_t color_map; // terrain type index, ra only
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int32_t map; // image index for each cell
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} ra;
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};
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};
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static int IconEntry;
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static void* IconData;
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static IconControlType* LastIconset;
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static uint8_t* StampPtr;
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static uint8_t* TransFlagPtr;
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static uint8_t* MapPtr;
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static int IconWidth;
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static int IconHeight;
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static int IconSize;
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static int IconCount;
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void __cdecl Init_Stamps(IconControlType* iconset)
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{
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if (iconset && LastIconset != iconset) {
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IconCount = (iconset->count);
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IconWidth = (iconset->width);
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IconHeight = (iconset->height);
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LastIconset = iconset;
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IconSize = IconWidth * IconHeight;
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// TD and RA tileset headers are slightly different, so check a constant that only exists in one type.
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if ((iconset->td.icons) == TD_TILESET_CHECK) {
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MapPtr = reinterpret_cast<uint8_t*>(iconset) + (iconset->td.map);
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StampPtr = reinterpret_cast<uint8_t*>(iconset) + (iconset->td.icons);
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TransFlagPtr = reinterpret_cast<uint8_t*>(iconset) + (iconset->td.trans_flag);
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}
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else {
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MapPtr = reinterpret_cast<uint8_t*>(iconset) + (iconset->ra.map);
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StampPtr = reinterpret_cast<uint8_t*>(iconset) + (iconset->ra.icons);
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TransFlagPtr = reinterpret_cast<uint8_t*>(iconset) + (iconset->ra.trans_flag);
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}
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}
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}
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void __cdecl Buffer_Draw_Stamp2(GraphicViewPortClass& viewport, IconControlType* tileset, int icon, int x, int y, const void* remapper)
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{
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if (!tileset) {
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return;
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}
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if (LastIconset != tileset) {
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Init_Stamps(tileset);
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}
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int32_t icon_index = MapPtr != nullptr ? MapPtr[icon] : icon;
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if (icon_index < IconCount) {
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int32_t fullpitch = viewport.Get_Full_Pitch(); //(viewport.Get_Pitch() + viewport.Get_XAdd() + viewport.Get_Width());
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uint8_t* dst = x + y * fullpitch + (uint8_t*)(viewport.Get_Offset());
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int32_t blitpitch = fullpitch - IconWidth;
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uint8_t* src = &StampPtr[IconSize * icon_index];
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if (remapper) {
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const uint8_t* remap = static_cast<const uint8_t*>(remapper);
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for (int i = 0; i < IconHeight; ++i) {
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for (int j = 0; j < IconWidth; ++j) {
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uint8_t cur_byte = remap[*src++];
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if (cur_byte) {
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*dst = cur_byte;
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}
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++dst;
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}
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dst += blitpitch;
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}
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}
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else if (TransFlagPtr[icon_index]) {
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for (int i = 0; i < IconHeight; ++i) {
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for (int j = 0; j < IconWidth; ++j) {
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uint8_t cur_byte = *src++;
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if (cur_byte) {
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*dst = cur_byte;
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}
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++dst;
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}
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dst += blitpitch;
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}
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}
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else {
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for (int32_t i = 0; i < IconHeight; ++i) {
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memcpy(dst, src, IconWidth);
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dst += fullpitch;
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src += IconWidth;
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}
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}
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}
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}
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void __cdecl Buffer_Draw_Stamp_Clip2(GraphicViewPortClass& viewport, IconControlType* tileset, int icon, int x, int y, const void* remapper, int left, int top, int right, int bottom)
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{
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if (!tileset) {
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return;
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}
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if (LastIconset != tileset) {
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Init_Stamps(tileset);
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}
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int icon_index = MapPtr != nullptr ? MapPtr[icon] : icon;
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if (icon_index < IconCount) {
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int blit_height = IconHeight;
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int blit_width = IconWidth;
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uint8_t* src = &StampPtr[IconSize * icon_index];
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int width = left + right;
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int xstart = left + x;
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int height = top + bottom;
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int ystart = top + y;
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if (xstart < width && ystart < height && IconHeight + ystart > top && IconWidth + xstart > left) {
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if (xstart < left) {
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src += left - xstart;
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blit_width -= left - xstart;
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xstart = left;
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}
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int src_pitch = IconWidth - blit_width;
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if (blit_width + xstart > width) {
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src_pitch += blit_width - (width - xstart);
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blit_width = width - xstart;
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}
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if (top > ystart) {
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blit_height = IconHeight - (top - ystart);
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src += IconWidth * (top - ystart);
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ystart = top;
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}
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if (blit_height + ystart > height) {
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blit_height = height - ystart;
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}
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int full_pitch = viewport.Get_Full_Pitch(); //(viewport.Get_Pitch() + viewport.Get_XAdd() + viewport.Get_Width());
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uint8_t* dst = xstart + ystart * full_pitch + (uint8_t*)(viewport.Get_Offset());
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int dst_pitch = full_pitch - blit_width;
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if (remapper) {
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const uint8_t* remap = static_cast<const uint8_t*>(remapper);
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for (int i = 0; i < blit_height; ++i) {
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for (int j = 0; j < blit_width; ++j) {
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uint8_t cur_byte = remap[*src++];
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if (cur_byte) {
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*dst = cur_byte;
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}
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++dst;
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}
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dst += dst_pitch;
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}
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}
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else if (TransFlagPtr[icon_index]) {
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for (int i = 0; i < blit_height; ++i) {
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for (int j = 0; j < blit_width; ++j) {
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uint8_t cur_byte = *src++;
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if (cur_byte) {
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*dst = cur_byte;
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}
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++dst;
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}
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src += src_pitch;
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dst += dst_pitch;
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}
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}
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else {
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for (int i = 0; i < blit_height; ++i) {
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memcpy(dst, src, blit_width);
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dst += full_pitch;
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src += IconWidth;
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}
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}
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}
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}
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}
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extern "C" void __cdecl Buffer_Draw_Stamp_Clip(void const* this_object, void const* icondata, int icon, int x_pixel, int y_pixel, void const* remap, int min_x, int min_y, int max_x, int max_y) {
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Buffer_Draw_Stamp_Clip2(*((GraphicViewPortClass*)this_object), (IconControlType*)icondata, icon, x_pixel, y_pixel, remap, min_x, min_y, max_x, max_y);
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}
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extern "C" void __cdecl Buffer_Draw_Stamp(void const* thisptr, void const* icondata, int icon, int x_pixel, int y_pixel, void const* remap) {
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Buffer_Draw_Stamp2(*((GraphicViewPortClass*)thisptr), (IconControlType*)icondata, icon, x_pixel, y_pixel, remap);
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}
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uint8_t* Get_Icon_Set_Map(void* temp)
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{
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if (temp != nullptr) {
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if ((static_cast<IconControlType*>(temp)->td.icons) == TD_TILESET_CHECK) {
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return static_cast<uint8_t*>(temp) + (static_cast<IconControlType*>(temp)->td.icons);
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}
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else {
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return static_cast<uint8_t*>(temp) + (static_cast<IconControlType*>(temp)->ra.icons);
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}
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}
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return nullptr;
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}
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