0xmac/LS7-Emulator
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Updated to support propper video scaling

Browse Source
This commit is contained in:
0xmac 2025-01-30 09:16:50 +01:00
parent 8581e53373
commit de0686edb7
1 changed files with 9 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
src/video.c
View File

@ -6,6 +6,7 @@
#define LOWCOLOR 96
extern float displayScale;
extern uint8_t randomize;
/* Public Variables */
int8_t videoModified;
@ -50,8 +51,9 @@ void initVideo(){
videoMode = 0x01;
updatePalette();
/* Fill VRAM with random values, just for fun */
for (int i = 0; i < 0x8000; i++) videoMemory[i] = rand();
if (randomize) {
for (int i = 0; i < 0x8000; i++) videoMemory[i] = rand();
}
}
void writeVideo(){
@ -86,26 +88,16 @@ void setPixels(uint8_t x, uint8_t y){
videoColorValue = videoMemory[(y * 128) + (x | 0x40)];
}
// Snipping out the upper 8 colors
// videoColorValue &= 0x77;
for (uint8_t i = 0; i < 8; i++){
if (displayScale == 1){
renderMemory[(y * SDL_X_SIZE) + ((x * 8) + i)] = (videoValue & (128 >> i)) ? videoColorIndex[((videoColorValue & 0xF0) >> 4)] : videoColorIndex[(videoColorValue & 0x0F)];
} else {
for (uint8_t _x = 0; _x < displayScale; _x++){
for (uint8_t _y = 0; _y < displayScale; _y++){
renderMemory[(((y * (int)displayScale) + _y) * SDL_X_SIZE) + ((((x * (int)displayScale) * 8) + (i * (int)displayScale)) + _x)] = (videoValue & (128 >> i)) ? videoColorIndex[((videoColorValue & 0xF0) >> 4)] : videoColorIndex[(videoColorValue & 0x0F)];
}
}
}
renderMemory[(y * SDL_X_SIZE) + ((x * 8) + i)] =
(videoValue & (128 >> i)) ?
videoColorIndex[((videoColorValue & 0xF0) >> 4)] :
videoColorIndex[(videoColorValue & 0x0F)];
}
}
void updateVideo(){
if (videoModified){
//sfVertexArray_clear(renderArray);
if (videoModified){
for (uint16_t y = 0; y < 256; y++){
for (uint8_t x = 0; x < 48; x++){
setPixels(x, (uint8_t)y);