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GPU: Added RGB565/RGB8 framebuffer support and various cleanups.

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- Centralizes color format encode/decode functions.
- Fixes endianness issues.
- Implements remaining framebuffer formats in the debugger.
This commit is contained in:
bunnei 2015-02-25 22:44:55 -05:00
parent 44f46254dc
commit 34c31db14a
9 changed files with 214 additions and 195 deletions
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78
src/video_core/rasterizer.cpp
View file

@ -22,7 +22,6 @@ namespace Rasterizer {
static void DrawPixel(int x, int y, const Math::Vec4<u8>& color) {
const PAddr addr = registers.framebuffer.GetColorBufferPhysicalAddress();
u8* color_buffer = Memory::GetPointer(PAddrToVAddr(addr));
// Similarly to textures, the render framebuffer is laid out from bottom to top, too.
// NOTE: The framebuffer height register contains the actual FB height minus one.
@ -31,35 +30,28 @@ static void DrawPixel(int x, int y, const Math::Vec4<u8>& color) {
const u32 coarse_y = y & ~7;
u32 bytes_per_pixel = GPU::Regs::BytesPerPixel(GPU::Regs::PixelFormat(registers.framebuffer.color_format.Value()));
u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * registers.framebuffer.width * bytes_per_pixel;
u8* dst_pixel = Memory::GetPointer(PAddrToVAddr(addr)) + dst_offset;
switch (registers.framebuffer.color_format) {
case registers.framebuffer.RGBA8:
{
u8* pixel = color_buffer + dst_offset;
pixel[3] = color.r();
pixel[2] = color.g();
pixel[1] = color.b();
pixel[0] = color.a();
Color::EncodeRGBA8(color, dst_pixel);
break;
case registers.framebuffer.RGB8:
Color::EncodeRGB8(color, dst_pixel);
break;
case registers.framebuffer.RGB5A1:
Color::EncodeRGB5A1(color, dst_pixel);
break;
case registers.framebuffer.RGB565:
Color::EncodeRGB565(color, dst_pixel);
break;
}
case registers.framebuffer.RGBA4:
{
u8* pixel = color_buffer + dst_offset;
pixel[1] = (color.r() & 0xF0) | (color.g() >> 4);
pixel[0] = (color.b() & 0xF0) | (color.a() >> 4);
Color::EncodeRGBA4(color, dst_pixel);
break;
}
case registers.framebuffer.RGBA5551:
{
u16_le* pixel = (u16_le*)(color_buffer + dst_offset);
*pixel = (Color::Convert8To5(color.r()) << 11) |
(Color::Convert8To5(color.g()) << 6) |
(Color::Convert8To5(color.b()) << 1) |
Color::Convert8To1(color.a());
break;
}
default:
LOG_CRITICAL(Render_Software, "Unknown framebuffer color format %x", registers.framebuffer.color_format.Value());
@ -69,45 +61,29 @@ static void DrawPixel(int x, int y, const Math::Vec4<u8>& color) {
static const Math::Vec4<u8> GetPixel(int x, int y) {
const PAddr addr = registers.framebuffer.GetColorBufferPhysicalAddress();
u8* color_buffer = Memory::GetPointer(PAddrToVAddr(addr));
y = (registers.framebuffer.height - y);
const u32 coarse_y = y & ~7;
u32 bytes_per_pixel = GPU::Regs::BytesPerPixel(GPU::Regs::PixelFormat(registers.framebuffer.color_format.Value()));
u32 src_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * registers.framebuffer.width * bytes_per_pixel;
Math::Vec4<u8> ret;
u8* src_pixel = Memory::GetPointer(PAddrToVAddr(addr)) + src_offset;
switch (registers.framebuffer.color_format) {
case registers.framebuffer.RGBA8:
{
u8* pixel = color_buffer + src_offset;
ret.r() = pixel[3];
ret.g() = pixel[2];
ret.b() = pixel[1];
ret.a() = pixel[0];
return ret;
}
return Color::DecodeRGBA8(src_pixel);
case registers.framebuffer.RGB8:
return Color::DecodeRGB8(src_pixel);
case registers.framebuffer.RGB5A1:
return Color::DecodeRGB5A1(src_pixel);
case registers.framebuffer.RGB565:
return Color::DecodeRGB565(src_pixel);
case registers.framebuffer.RGBA4:
{
u8* pixel = color_buffer + src_offset;
ret.r() = Color::Convert4To8(pixel[1] >> 4);
ret.g() = Color::Convert4To8(pixel[1] & 0x0F);
ret.b() = Color::Convert4To8(pixel[0] >> 4);
ret.a() = Color::Convert4To8(pixel[0] & 0x0F);
return ret;
}
case registers.framebuffer.RGBA5551:
{
u16_le pixel = *(u16_le*)(color_buffer + src_offset);
ret.r() = Color::Convert5To8((pixel >> 11) & 0x1F);
ret.g() = Color::Convert5To8((pixel >> 6) & 0x1F);
ret.b() = Color::Convert5To8((pixel >> 1) & 0x1F);
ret.a() = Color::Convert1To8(pixel & 0x1);
return ret;
}
return Color::DecodeRGBA4(src_pixel);
default:
LOG_CRITICAL(Render_Software, "Unknown framebuffer color format %x", registers.framebuffer.color_format.Value());