30 lines
953 B
C++
30 lines
953 B
C++
#include "framebuffer/framebuffer.h"
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Framebuffer::Framebuffer(const FramebufferInfo& info)
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: fb_info_(info), cursor_pos_(0) {
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uint64_t buff_size_bytes = fb_info_.height() * fb_info_.pitch();
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fb_memory_ = OwnedMemoryRegion::DirectPhysical(fb_info_.address_phys(),
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buff_size_bytes);
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fb_ = reinterpret_cast<uint32_t*>(fb_memory_.vaddr());
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}
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void Framebuffer::DrawPixel(uint32_t row, uint32_t col, uint32_t pixel) {
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// Div by 4 because pitch is in bytes and fb_ is a 32bit array.
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fb_[(row * fb_info_.pitch() / 4) + col] = pixel;
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}
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void Framebuffer::DrawGlyph(uint8_t* glyph) {
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uint32_t gl_width = 8;
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uint32_t gl_height = 16;
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for (uint8_t r = 0; r < gl_height; r++) {
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for (uint8_t c = 0; c < gl_width; c++) {
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if (((glyph[r] >> c) % 2) == 1) {
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DrawPixel(r, gl_width - c - 1, 0xFFFF'FFFF);
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} else {
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DrawPixel(r, gl_width - c - 1, 0);
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}
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}
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}
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};
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