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Kernel: Add fast path for framembuffer sync if bpp == 32

This commit is contained in:
Bananymous 2024-06-28 23:34:11 +03:00
parent 42237a3bc8
commit 1a844426c3
1 changed files with 34 additions and 23 deletions
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57
kernel/kernel/Device/FramebufferDevice.cpp
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@ -156,18 +156,7 @@ namespace Kernel
void FramebufferDevice::sync_pixels_full() void FramebufferDevice::sync_pixels_full()
{ {
auto* video_memory_u8 = reinterpret_cast<uint8_t*>(m_video_memory_vaddr); return sync_pixels_linear(0, m_width * m_height);
auto* video_buffer_u8 = reinterpret_cast<uint8_t*>(m_video_buffer->vaddr());
for (uint32_t i = 0; i < m_width * m_height; i++)
{
uint32_t row = i / m_width;
uint32_t idx = i % m_width;
video_memory_u8[(row * m_pitch) + (idx * m_bpp / 8) + 0] = video_buffer_u8[i * (BANAN_FB_BPP / 8) + 0];
video_memory_u8[(row * m_pitch) + (idx * m_bpp / 8) + 1] = video_buffer_u8[i * (BANAN_FB_BPP / 8) + 1];
video_memory_u8[(row * m_pitch) + (idx * m_bpp / 8) + 2] = video_buffer_u8[i * (BANAN_FB_BPP / 8) + 2];
}
} }
void FramebufferDevice::sync_pixels_linear(uint32_t first_pixel, uint32_t pixel_count) void FramebufferDevice::sync_pixels_linear(uint32_t first_pixel, uint32_t pixel_count)
@ -180,6 +169,38 @@ namespace Kernel
auto* video_memory_u8 = reinterpret_cast<uint8_t*>(m_video_memory_vaddr); auto* video_memory_u8 = reinterpret_cast<uint8_t*>(m_video_memory_vaddr);
auto* video_buffer_u8 = reinterpret_cast<uint8_t*>(m_video_buffer->vaddr()); auto* video_buffer_u8 = reinterpret_cast<uint8_t*>(m_video_buffer->vaddr());
if (m_bpp == BANAN_FB_BPP)
{
const uint32_t buffer_pitch = m_width * (BANAN_FB_BPP / 8);
uint32_t row = first_pixel / m_width;
if (auto rem = first_pixel % m_width)
{
const uint32_t to_copy = BAN::Math::min(pixel_count, m_width - rem);
memcpy(
&video_memory_u8[row * m_pitch + rem * (BANAN_FB_BPP / 8)],
&video_buffer_u8[row * buffer_pitch + rem * (BANAN_FB_BPP / 8)],
to_copy * (BANAN_FB_BPP / 8)
);
pixel_count -= to_copy;
row++;
}
while (pixel_count)
{
const uint32_t to_copy = BAN::Math::min(pixel_count, m_width);
memcpy(
&video_memory_u8[row * m_pitch],
&video_buffer_u8[row * buffer_pitch],
to_copy * (BANAN_FB_BPP / 8)
);
pixel_count -= to_copy;
row++;
}
return;
}
for (uint32_t i = 0; i < pixel_count; i++) for (uint32_t i = 0; i < pixel_count; i++)
{ {
uint32_t row = (first_pixel + i) / m_width; uint32_t row = (first_pixel + i) / m_width;
@ -200,18 +221,8 @@ namespace Kernel
if (top_right_y + height > m_height) if (top_right_y + height > m_height)
height = m_height - top_right_y; height = m_height - top_right_y;
auto* video_memory_u8 = reinterpret_cast<uint8_t*>(m_video_memory_vaddr);
auto* video_buffer_u8 = reinterpret_cast<uint8_t*>(m_video_buffer->vaddr());
for (uint32_t row = top_right_y; row < top_right_y + height; row++) for (uint32_t row = top_right_y; row < top_right_y + height; row++)
{ sync_pixels_linear(row * m_width + top_right_x, width);
for (uint32_t idx = top_right_x; idx < top_right_x + width; idx++)
{
video_memory_u8[(row * m_pitch) + (idx * m_bpp / 8) + 0] = video_buffer_u8[(row * m_width + idx) * (BANAN_FB_BPP / 8) + 0];
video_memory_u8[(row * m_pitch) + (idx * m_bpp / 8) + 1] = video_buffer_u8[(row * m_width + idx) * (BANAN_FB_BPP / 8) + 1];
video_memory_u8[(row * m_pitch) + (idx * m_bpp / 8) + 2] = video_buffer_u8[(row * m_width + idx) * (BANAN_FB_BPP / 8) + 2];
}
}
} }
class FramebufferMemoryRegion : public MemoryRegion class FramebufferMemoryRegion : public MemoryRegion