99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
#include "BasicRenderer.h"
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BasicRenderer* GlobalRenderer;
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BasicRenderer::BasicRenderer(Framebuffer* framebuffer, PSF1_FONT* psf1_Font) {
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targetFramebuffer = framebuffer;
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PSF1_Font = psf1_Font;
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Colour = 0xFFFFFFFF;
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cursorPosition = {0,0};
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}
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void BasicRenderer::PutChar(char chr, unsigned int xOff, unsigned int yOff) {
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unsigned int* pixPtr = (unsigned int*)targetFramebuffer->BaseAddress;
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char* fontPtr = (char*)PSF1_Font->glyphBuffer + (chr * PSF1_Font->psf1_Header->charsize);
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for (unsigned long y = yOff; y < yOff + 18; y++) {
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for (unsigned long x = xOff; x < xOff+8; x++) {
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if ((*fontPtr & (0b10000000 >> (x - xOff))) > 0) {
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*(unsigned int*)(pixPtr + x + (y * targetFramebuffer->PixelsPerScanline)) = Colour;
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}
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}
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fontPtr++;
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}
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}
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void BasicRenderer::PutChar(char chr) {
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PutChar(chr, cursorPosition.x, cursorPosition.y);
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cursorPosition.x += 8;
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if (cursorPosition.x + 8 > targetFramebuffer->Width) {
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cursorPosition.x = 0;
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cursorPosition.y += 16;
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}
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}
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void BasicRenderer::Print(const char* str) {
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unsigned int x = 0;
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char* chr = (char*)str;
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while (*chr != 0) {
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PutChar(*chr, cursorPosition.x, cursorPosition.y);
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cursorPosition.x+=8;
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if (cursorPosition.x + 8 > targetFramebuffer->Width) {
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cursorPosition.x = 0;
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cursorPosition.y += 18;
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}
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chr++;
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}
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}
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void BasicRenderer::Clear() {
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uint64_t fbBase = (uint64_t)targetFramebuffer->BaseAddress;
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uint64_t bytesPerScanline = targetFramebuffer->PixelsPerScanline * 4;
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uint64_t fbHeight = targetFramebuffer->Height;
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uint64_t fbSize = targetFramebuffer->BufferSize;
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for (int verticalScanline = 0; verticalScanline < fbHeight; verticalScanline ++){
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uint64_t pixPtrBase = fbBase + (bytesPerScanline * verticalScanline);
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for (uint32_t* pixPtr = (uint32_t*)pixPtrBase; pixPtr < (uint32_t*)(pixPtrBase + bytesPerScanline); pixPtr ++){
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*pixPtr = ClearColour;
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}
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}
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}
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void BasicRenderer::ClearChar(){
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if (cursorPosition.x == 0){
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cursorPosition.x = targetFramebuffer->Width;
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cursorPosition.y -= 16;
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if (cursorPosition.y < 0) cursorPosition.y = 0;
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}
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unsigned int xOff = cursorPosition.x;
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unsigned int yOff = cursorPosition.y;
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unsigned int* pixPtr = (unsigned int*)targetFramebuffer->BaseAddress;
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for (unsigned long y = yOff; y < yOff + 16; y++){
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for (unsigned long x = xOff - 8; x < xOff; x++){
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*(unsigned int*)(pixPtr + x + (y * targetFramebuffer->PixelsPerScanline)) = ClearColour;
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}
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}
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cursorPosition.x -= 8;
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if (cursorPosition.x < 0){
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cursorPosition.x = targetFramebuffer->Width;
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cursorPosition.y -= 16;
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if (cursorPosition.y < 0) cursorPosition.y = 0;
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}
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}
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void BasicRenderer::Next() {
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cursorPosition.x = 0;
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cursorPosition.y += 16;
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} |