Kernel: VESA driver has now second buffer for fast scrolling
This allows us to not read from video memory, since it was very slow I also implemented fast path for graphics clearing and scrolling if bpp is 32
This commit is contained in:
Bananymous
parent
5e2680cade
commit
3f7a61a4d2
|
|
@ -1,9 +1,13 @@
|
|||
#include <kernel/kmalloc.h>
|
||||
#include <kernel/multiboot.h>
|
||||
#include <kernel/panic.h>
|
||||
#include <kernel/Serial.h>
|
||||
#include <kernel/VESA.h>
|
||||
|
||||
#include "font.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#define MULTIBOOT_FLAGS_FRAMEBUFFER (1 << 12)
|
||||
#define MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS 1
|
||||
#define MULTIBOOT_FRAMEBUFFER_TYPE_TEXT 2
|
||||
|
|
@ -14,6 +18,7 @@ extern const struct bitmap_font font;
|
|||
|
||||
namespace VESA
|
||||
{
|
||||
static void* s_buffer = nullptr;
|
||||
static void* s_addr = nullptr;
|
||||
static uint8_t s_bpp = 0;
|
||||
static uint32_t s_pitch = 0;
|
||||
|
|
@ -23,11 +28,11 @@ namespace VESA
|
|||
|
||||
static void GraphicsPutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg);
|
||||
static void GraphicsClear(Color color);
|
||||
static void GraphicsScrollLine(uint32_t line);
|
||||
static void GraphicsScroll();
|
||||
|
||||
static void TextPutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg);
|
||||
static void TextClear(Color color);
|
||||
static void TextScrollLine(uint32_t line);
|
||||
static void TextScroll();
|
||||
|
||||
void PutEntryAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg)
|
||||
{
|
||||
|
|
@ -49,14 +54,12 @@ namespace VESA
|
|||
return TextClear(color);
|
||||
}
|
||||
|
||||
void ScrollLine(uint32_t line)
|
||||
void Scroll()
|
||||
{
|
||||
if (line == 0 || line >= s_height)
|
||||
return;
|
||||
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
|
||||
return GraphicsScrollLine(line);
|
||||
return GraphicsScroll();
|
||||
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_TEXT)
|
||||
return TextScrollLine(line);
|
||||
return TextScroll();
|
||||
}
|
||||
|
||||
uint32_t GetTerminalWidth()
|
||||
|
|
@ -77,7 +80,7 @@ namespace VESA
|
|||
return 0;
|
||||
}
|
||||
|
||||
bool Initialize()
|
||||
bool PreInitialize()
|
||||
{
|
||||
if (!(s_multiboot_info->flags & MULTIBOOT_FLAGS_FRAMEBUFFER))
|
||||
return false;
|
||||
|
|
@ -114,6 +117,18 @@ namespace VESA
|
|||
return false;
|
||||
}
|
||||
|
||||
void Initialize()
|
||||
{
|
||||
if (s_mode == MULTIBOOT_FRAMEBUFFER_TYPE_GRAPHICS)
|
||||
{
|
||||
s_buffer = kmalloc_eternal(s_height * s_pitch);
|
||||
if (s_buffer == nullptr)
|
||||
kprintln("Could not allocate a buffer for VESA");
|
||||
else
|
||||
memcpy(s_buffer, s_addr, s_height * s_pitch);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
@ -138,29 +153,37 @@ namespace VESA
|
|||
0x00'FF'FF'FF,
|
||||
};
|
||||
|
||||
static void GraphicsSetPixel(uint32_t* address, uint32_t color)
|
||||
static void GraphicsSetPixel(uint32_t offset, uint32_t color)
|
||||
{
|
||||
switch (s_bpp)
|
||||
{
|
||||
case 24:
|
||||
*address = (*address & 0xFF000000) | (color & 0x00FFFFFF);
|
||||
break;
|
||||
case 32:
|
||||
*address = color;
|
||||
break;
|
||||
}
|
||||
}
|
||||
uint32_t* address = (uint32_t*)((uint32_t)s_addr + offset);
|
||||
|
||||
static uint32_t GraphicsGetPixel(uint32_t* address)
|
||||
{
|
||||
switch (s_bpp)
|
||||
if (s_buffer)
|
||||
{
|
||||
case 24:
|
||||
return *address & 0x00FFFFFF;
|
||||
case 32:
|
||||
return *address;
|
||||
uint32_t* buffer = (uint32_t*)((uint32_t)s_buffer + offset);
|
||||
switch (s_bpp)
|
||||
{
|
||||
case 24:
|
||||
*buffer = (*buffer & 0xFF000000) | (color & 0x00FFFFFF);
|
||||
*address = *buffer;
|
||||
break;
|
||||
case 32:
|
||||
*buffer = color;
|
||||
*address = color;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
switch (s_bpp)
|
||||
{
|
||||
case 24:
|
||||
*address = (*address & 0xFF000000) | (color & 0x00FFFFFF);
|
||||
break;
|
||||
case 32:
|
||||
*address = color;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void GraphicsPutCharAt(uint16_t ch, uint32_t x, uint32_t y, Color fg, Color bg)
|
||||
|
|
@ -184,58 +207,90 @@ namespace VESA
|
|||
uint32_t fx = x * font.Width;
|
||||
uint32_t fy = y * font.Height;
|
||||
|
||||
uint32_t row_addr = (uint32_t)s_addr + (fy * s_pitch) + (fx * (s_bpp / 8));
|
||||
uint32_t row_offset = (fy * s_pitch) + (fx * (s_bpp / 8));
|
||||
for (uint32_t gy = 0; gy < font.Height; gy++)
|
||||
{
|
||||
if (fy + gy >= s_height) break;
|
||||
uint32_t pixel_addr = row_addr;
|
||||
uint32_t pixel_offset = row_offset;
|
||||
for (uint32_t gx = 0; gx < font.Width; gx++)
|
||||
{
|
||||
if (fx + gx >= s_width) break;
|
||||
GraphicsSetPixel((uint32_t*)pixel_addr, (glyph[gy] & (1 << (font.Width - gx - 1))) ? u32_fg : u32_bg);
|
||||
pixel_addr += s_bpp / 8;
|
||||
GraphicsSetPixel(pixel_offset, (glyph[gy] & (1 << (font.Width - gx - 1))) ? u32_fg : u32_bg);
|
||||
pixel_offset += s_bpp / 8;
|
||||
}
|
||||
row_addr += s_pitch;
|
||||
row_offset += s_pitch;
|
||||
}
|
||||
}
|
||||
|
||||
static void GraphicsClear(Color color)
|
||||
{
|
||||
uint32_t u32_color = s_graphics_colors[(uint8_t)color];
|
||||
uint32_t row_addr = (uint32_t)s_addr;
|
||||
|
||||
if (s_bpp == 32)
|
||||
{
|
||||
uint32_t bytes_per_row = s_pitch / (s_bpp / 8);
|
||||
for (uint32_t y = 0; y < s_height; y++)
|
||||
for (uint32_t x = 0; x < s_width; x++)
|
||||
((uint32_t*)s_addr)[y * bytes_per_row + x] = u32_color;
|
||||
if (s_buffer)
|
||||
for (uint32_t y = 0; y < s_height; y++)
|
||||
for (uint32_t x = 0; x < s_width; x++)
|
||||
((uint32_t*)s_buffer)[y * bytes_per_row + x] = u32_color;
|
||||
return;
|
||||
}
|
||||
|
||||
uint32_t row_offset = 0;
|
||||
for (uint32_t y = 0; y < s_height; y++)
|
||||
{
|
||||
uint32_t pixel_addr = row_addr;
|
||||
uint32_t pixel_offset = row_offset;
|
||||
for (uint32_t x = 0; x < s_width; x++)
|
||||
{
|
||||
GraphicsSetPixel((uint32_t*)pixel_addr, u32_color);
|
||||
pixel_addr += s_bpp / 8;
|
||||
GraphicsSetPixel(pixel_offset, u32_color);
|
||||
pixel_offset += s_bpp / 8;
|
||||
}
|
||||
row_addr += s_pitch;
|
||||
row_offset += s_pitch;
|
||||
}
|
||||
}
|
||||
|
||||
static void GraphicsScrollLine(uint32_t line)
|
||||
static void GraphicsScroll()
|
||||
{
|
||||
if (line >= s_height / font.Height)
|
||||
return;
|
||||
|
||||
uint32_t row_out = (uint32_t)s_addr + (line - 1) * font.Height * s_pitch;
|
||||
uint32_t row_in = (uint32_t)s_addr + (line - 0) * font.Height * s_pitch;
|
||||
|
||||
for (uint32_t y = 0; y < font.Height; y++)
|
||||
if (s_bpp == 32)
|
||||
{
|
||||
uint32_t pixel_out = row_out;
|
||||
uint32_t pixel_in = row_in;
|
||||
for (uint32_t x = 0; x < s_width; x++)
|
||||
uint32_t bytes_per_row = s_pitch / (s_bpp / 8);
|
||||
for (uint32_t y = 0; y < s_height - font.Height; y++)
|
||||
{
|
||||
GraphicsSetPixel((uint32_t*)pixel_out, GraphicsGetPixel((uint32_t*)pixel_in));
|
||||
pixel_out += s_bpp / 8;
|
||||
pixel_in += s_bpp / 8;
|
||||
for (uint32_t x = 0; x < s_width; x++)
|
||||
{
|
||||
if (s_buffer)
|
||||
{
|
||||
((uint32_t*)s_buffer)[y * bytes_per_row + x] = ((uint32_t*)s_buffer)[(y + font.Height) * bytes_per_row + x];
|
||||
((uint32_t*)s_addr )[y * bytes_per_row + x] = ((uint32_t*)s_buffer)[(y + font.Height) * bytes_per_row + x];
|
||||
}
|
||||
else
|
||||
{
|
||||
((uint32_t*)s_addr )[y * bytes_per_row + x] = ((uint32_t*)s_addr )[(y + font.Height) * bytes_per_row + x];
|
||||
}
|
||||
}
|
||||
}
|
||||
row_out += s_pitch;
|
||||
row_in += s_pitch;
|
||||
return;
|
||||
}
|
||||
|
||||
uint32_t row_offset_out = 0;
|
||||
uint32_t row_offset_in = font.Height * s_pitch;
|
||||
|
||||
for (uint32_t y = 0; y < s_height - 1; y++)
|
||||
{
|
||||
if (s_buffer)
|
||||
{
|
||||
memcpy((void*)((uint32_t)s_buffer + row_offset_out), (void*)((uint32_t)s_buffer + row_offset_in), s_width * s_bpp);
|
||||
memcpy((void*)((uint32_t)s_addr + row_offset_out), (void*)((uint32_t)s_buffer + row_offset_in), s_width * s_bpp);
|
||||
}
|
||||
else
|
||||
{
|
||||
memcpy((void*)((uint32_t)s_addr + row_offset_out), (void*)((uint32_t)s_addr + row_offset_in), s_width * s_bpp);
|
||||
}
|
||||
row_offset_out += s_pitch;
|
||||
row_offset_in += s_pitch;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -266,13 +321,16 @@ namespace VESA
|
|||
TextPutCharAt(' ', x, y, Color::BRIGHT_WHITE, color);
|
||||
}
|
||||
|
||||
static void TextScrollLine(uint32_t line)
|
||||
static void TextScroll()
|
||||
{
|
||||
for (uint32_t x = 0; x < s_width; x++)
|
||||
for (uint32_t y = 1; y < s_height; y++)
|
||||
{
|
||||
uint32_t index1 = (line - 0) * s_width + x;
|
||||
uint32_t index2 = (line - 1) * s_width + x;
|
||||
((uint16_t*)s_addr)[index2] = ((uint16_t*)s_addr)[index1];
|
||||
for (uint32_t x = 0; x < s_width; x++)
|
||||
{
|
||||
uint32_t index1 = (y - 0) * s_width + x;
|
||||
uint32_t index2 = (y - 1) * s_width + x;
|
||||
((uint16_t*)s_addr)[index2] = ((uint16_t*)s_addr)[index1];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -325,8 +325,7 @@ namespace TTY
|
|||
|
||||
while (terminal_row >= terminal_height)
|
||||
{
|
||||
for (size_t line = 1; line < terminal_height; line++)
|
||||
VESA::ScrollLine(line);
|
||||
VESA::Scroll();
|
||||
clear_line(terminal_height - 1);
|
||||
|
||||
terminal_col = 0;
|
||||
|
|
|
|||
|
|
@ -25,10 +25,11 @@ namespace VESA
|
|||
BRIGHT_WHITE = 15,
|
||||
};
|
||||
|
||||
bool Initialize();
|
||||
bool PreInitialize();
|
||||
void Initialize();
|
||||
void PutEntryAt(uint16_t, uint32_t, uint32_t, Color, Color);
|
||||
void Clear(Color);
|
||||
void ScrollLine(uint32_t line);
|
||||
void Scroll();
|
||||
|
||||
uint32_t GetTerminalWidth();
|
||||
uint32_t GetTerminalHeight();
|
||||
|
|
|
|||
|
|
@ -5,6 +5,7 @@
|
|||
void kmalloc_initialize();
|
||||
void kmalloc_dump_nodes();
|
||||
|
||||
void* kmalloc_eternal(size_t);
|
||||
void* kmalloc(size_t);
|
||||
void kfree(void*);
|
||||
|
||||
|
|
|
|||
|
|
@ -52,7 +52,7 @@ extern "C" void kernel_main(multiboot_info_t* mbi, uint32_t magic)
|
|||
|
||||
s_multiboot_info = mbi;
|
||||
|
||||
if (!VESA::Initialize())
|
||||
if (!VESA::PreInitialize())
|
||||
{
|
||||
dprintln("Could not initialize VESA");
|
||||
return;
|
||||
|
|
@ -61,6 +61,7 @@ extern "C" void kernel_main(multiboot_info_t* mbi, uint32_t magic)
|
|||
|
||||
kmalloc_initialize();
|
||||
|
||||
VESA::Initialize();
|
||||
|
||||
ParsedCommandLine cmdline;
|
||||
if (mbi->flags & 0x02)
|
||||
|
|
|
|||
|
|
@ -7,6 +7,10 @@
|
|||
|
||||
#define MB (1 << 20)
|
||||
|
||||
|
||||
/*
|
||||
#### KMALLOC ################
|
||||
*/
|
||||
struct kmalloc_node
|
||||
{
|
||||
uint8_t* addr = nullptr;
|
||||
|
|
@ -25,6 +29,17 @@ static uint8_t* const s_kmalloc_end = s_kmalloc_base + s_kmalloc_size;
|
|||
|
||||
static size_t s_kmalloc_available = 0;
|
||||
static size_t s_kmalloc_allocated = 0;
|
||||
/*
|
||||
#### KMALLOC ETERNAL ########
|
||||
*/
|
||||
static uint8_t* s_kmalloc_eternal_ptr = nullptr;
|
||||
|
||||
static uint8_t* const s_kmalloc_eternal_base = s_kmalloc_end;
|
||||
static constexpr size_t s_kmalloc_eternal_size = 2 * MB;
|
||||
static uint8_t* const s_kmalloc_eternal_end = s_kmalloc_eternal_base + s_kmalloc_eternal_size;
|
||||
/*
|
||||
#############################
|
||||
*/
|
||||
|
||||
void kmalloc_initialize()
|
||||
{
|
||||
|
|
@ -39,7 +54,7 @@ void kmalloc_initialize()
|
|||
|
||||
if (mmmt->type == 1)
|
||||
{
|
||||
if (mmmt->base_addr <= (uint64_t)s_kmalloc_base && (uint64_t)s_kmalloc_end <= mmmt->base_addr + mmmt->length)
|
||||
if (mmmt->base_addr <= (uint64_t)s_kmalloc_base && (uint64_t)s_kmalloc_eternal_end <= mmmt->base_addr + mmmt->length)
|
||||
{
|
||||
dprintln("Total usable RAM: {} MB", (float)mmmt->length / MB);
|
||||
valid = true;
|
||||
|
|
@ -51,7 +66,7 @@ void kmalloc_initialize()
|
|||
}
|
||||
|
||||
if (!valid)
|
||||
Kernel::panic("Kmalloc: Could not find 1 MB of memory");
|
||||
Kernel::panic("Kmalloc: Could not find {} MB of memory", (double)(s_kmalloc_eternal_end - s_kmalloc_base));
|
||||
|
||||
s_kmalloc_node_count = 1;
|
||||
s_kmalloc_node_head = (kmalloc_node*)s_kmalloc_node_base;
|
||||
|
|
@ -63,6 +78,8 @@ void kmalloc_initialize()
|
|||
head.addr = s_kmalloc_base;
|
||||
head.size = s_kmalloc_size;
|
||||
head.free = true;
|
||||
|
||||
s_kmalloc_eternal_ptr = s_kmalloc_eternal_base;
|
||||
}
|
||||
|
||||
void kmalloc_dump_nodes()
|
||||
|
|
@ -77,6 +94,19 @@ void kmalloc_dump_nodes()
|
|||
}
|
||||
}
|
||||
|
||||
void* kmalloc_eternal(size_t size)
|
||||
{
|
||||
if (s_kmalloc_eternal_ptr + size > s_kmalloc_eternal_end)
|
||||
{
|
||||
dprintln("\e[33mKmalloc eternal: Could not allocate {} bytes\e[0m", size);
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
void* result = (void*)s_kmalloc_eternal_ptr;
|
||||
s_kmalloc_eternal_ptr += size;
|
||||
return result;
|
||||
}
|
||||
|
||||
void* kmalloc(size_t size)
|
||||
{
|
||||
// Search for node with free memory and big enough size
|
||||
|
|
|
|||
Loading…
Reference in New Issue