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[metal] Try drawing an "A" glyph once in a graphics video mode

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This commit is contained in:
tkchia 2022-09-30 07:26:47 +00:00
parent e6e56a74e4
commit cf79923df1
1 changed files with 186 additions and 1 deletions
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187
libc/vga/writev-vga.c
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@ -58,10 +58,191 @@ ssize_t sys_writev_vga(struct Fd *fd, const struct iovec *iov, int iovlen) {
return wrote;
}
static void _vga_init_test(void *vid_buf, unsigned char vid_type,
size_t stride) {
switch (vid_type) {
case PC_VIDEO_TEXT:
break;
case PC_VIDEO_BGR565:
{
char *row_buf = (char *)vid_buf + stride * 100;
uint16_t *row_pix = (uint16_t *)row_buf;
unsigned i;
row_pix[0] = 0x0000;
row_pix[1] = 0x0000;
row_pix[2] = 0x07fc;
row_pix[3] = 0x07fc;
row_pix[4] = 0x07fc;
row_pix[5] = 0x0000;
row_pix[6] = 0x0000;
row_pix[7] = 0x0000;
row_buf += stride;
row_pix = (uint16_t *)row_buf;
row_pix[0] = 0x0000;
row_pix[1] = 0x07fc;
row_pix[2] = 0x07fc;
row_pix[3] = 0x07fc;
row_pix[4] = 0x07fc;
row_pix[5] = 0x07fc;
row_pix[6] = 0x0000;
row_pix[7] = 0x0000;
row_buf += stride;
row_pix = (uint16_t *)row_buf;
row_pix[0] = 0x07fc;
row_pix[1] = 0x07fc;
row_pix[2] = 0x0000;
row_pix[3] = 0x0000;
row_pix[4] = 0x0000;
row_pix[5] = 0x07fc;
row_pix[6] = 0x07fc;
row_pix[7] = 0x0000;
row_buf += stride;
row_pix = (uint16_t *)row_buf;
row_pix[0] = 0x07fc;
row_pix[1] = 0x07fc;
row_pix[2] = 0x07fc;
row_pix[3] = 0x07fc;
row_pix[4] = 0x07fc;
row_pix[5] = 0x07fc;
row_pix[6] = 0x07fc;
row_pix[7] = 0x0000;
for (i = 0; i < 4; ++i) {
row_buf += stride;
row_pix = (uint16_t *)row_buf;
row_pix[0] = 0xf81f;
row_pix[1] = 0xf81f;
row_pix[2] = 0x0000;
row_pix[3] = 0x0000;
row_pix[4] = 0x0000;
row_pix[5] = 0xf81f;
row_pix[6] = 0xf81f;
row_pix[7] = 0x0000;
}
}
break;
case PC_VIDEO_BGR555:
{
char *row_buf = (char *)vid_buf + stride * 100;
uint16_t *row_pix = (uint16_t *)row_buf;
unsigned i;
row_pix[0] = 0x8000;
row_pix[1] = 0x8000;
row_pix[2] = 0x83fc;
row_pix[3] = 0x83fc;
row_pix[4] = 0x83fc;
row_pix[5] = 0x8000;
row_pix[6] = 0x8000;
row_pix[7] = 0x8000;
row_buf += stride;
row_pix = (uint16_t *)row_buf;
row_pix[0] = 0x8000;
row_pix[1] = 0x83fc;
row_pix[2] = 0x83fc;
row_pix[3] = 0x83fc;
row_pix[4] = 0x83fc;
row_pix[5] = 0x83fc;
row_pix[6] = 0x8000;
row_pix[7] = 0x8000;
row_buf += stride;
row_pix = (uint16_t *)row_buf;
row_pix[0] = 0x83fc;
row_pix[1] = 0x83fc;
row_pix[2] = 0x8000;
row_pix[3] = 0x8000;
row_pix[4] = 0x8000;
row_pix[5] = 0x83fc;
row_pix[6] = 0x83fc;
row_pix[7] = 0x8000;
row_buf += stride;
row_pix = (uint16_t *)row_buf;
row_pix[0] = 0x83fc;
row_pix[1] = 0x83fc;
row_pix[2] = 0x83fc;
row_pix[3] = 0x83fc;
row_pix[4] = 0x83fc;
row_pix[5] = 0x83fc;
row_pix[6] = 0x83fc;
row_pix[7] = 0x8000;
for (i = 0; i < 4; ++i) {
row_buf += stride;
row_pix = (uint16_t *)row_buf;
row_pix[0] = 0xfc1f;
row_pix[1] = 0xfc1f;
row_pix[2] = 0x8000;
row_pix[3] = 0x8000;
row_pix[4] = 0x8000;
row_pix[5] = 0xfc1f;
row_pix[6] = 0xfc1f;
row_pix[7] = 0x8000;
}
}
break;
default:
{
char *row_buf = (char *)vid_buf + stride * 100;
uint32_t *row_pix = (uint32_t *)row_buf;
unsigned i;
row_pix[0] = 0xff000000;
row_pix[1] = 0xff000000;
row_pix[2] = 0xff00ffe0;
row_pix[3] = 0xff00ffe0;
row_pix[4] = 0xff00ffe0;
row_pix[5] = 0xff000000;
row_pix[6] = 0xff000000;
row_pix[7] = 0xff000000;
row_buf += stride;
row_pix = (uint32_t *)row_buf;
row_pix[0] = 0xff000000;
row_pix[1] = 0xff00ffe0;
row_pix[2] = 0xff00ffe0;
row_pix[3] = 0xff00ffe0;
row_pix[4] = 0xff00ffe0;
row_pix[5] = 0xff00ffe0;
row_pix[6] = 0xff000000;
row_pix[7] = 0xff000000;
row_buf += stride;
row_pix = (uint32_t *)row_buf;
row_pix[0] = 0xff00ffe0;
row_pix[1] = 0xff00ffe0;
row_pix[2] = 0xff000000;
row_pix[3] = 0xff000000;
row_pix[4] = 0xff000000;
row_pix[5] = 0xff00ffe0;
row_pix[6] = 0xff00ffe0;
row_pix[7] = 0xff000000;
row_buf += stride;
row_pix = (uint32_t *)row_buf;
row_pix[0] = 0xff00ffe0;
row_pix[1] = 0xff00ffe0;
row_pix[2] = 0xff00ffe0;
row_pix[3] = 0xff00ffe0;
row_pix[4] = 0xff00ffe0;
row_pix[5] = 0xff00ffe0;
row_pix[6] = 0xff00ffe0;
row_pix[7] = 0xff000000;
for (i = 0; i < 4; ++i) {
row_buf += stride;
row_pix = (uint32_t *)row_buf;
row_pix[0] = 0xffff00ff;
row_pix[1] = 0xffff00ff;
row_pix[2] = 0xff000000;
row_pix[3] = 0xff000000;
row_pix[4] = 0xff000000;
row_pix[5] = 0xffff00ff;
row_pix[6] = 0xffff00ff;
row_pix[7] = 0xff000000;
}
}
break;
}
}
__attribute__((__constructor__)) static textstartup void _vga_init(void) {
if (IsMetal()) {
struct mman *mm = (struct mman *)(BANE + 0x0500);
unsigned short height = mm->pc_video_height, width = mm->pc_video_width;
unsigned char vid_type = mm->pc_video_type;
unsigned short height = mm->pc_video_height, width = mm->pc_video_width,
stride = mm->pc_video_stride;
uint64_t vid_buf_phy = mm->pc_video_framebuffer;
void *vid_buf = (void *)(BANE + vid_buf_phy);
size_t vid_buf_sz = mm->pc_video_framebuffer_size;
@ -80,6 +261,10 @@ __attribute__((__constructor__)) static textstartup void _vga_init(void) {
chr_ht = 32;
/* Make sure the video buffer is mapped into virtual memory. */
__invert_memory_area(mm, __get_pml4t(), vid_buf_phy, vid_buf_sz, PAGE_RW);
#if 1
/* Test video frame buffer output. */
_vga_init_test(vid_buf, vid_type, stride);
#endif
/*
* Initialize our tty structure from the current screen contents,
* current cursor position, & character height.