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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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75
src/core/hw/gpu.cpp
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@ -113,8 +113,8 @@ inline void Write(u32 addr, const T data) {
{
const auto& config = g_regs.display_transfer_config;
if (config.trigger & 1) {
u8* source_pointer = Memory::GetPointer(Memory::PhysicalToVirtualAddress(config.GetPhysicalInputAddress()));
u8* dest_pointer = Memory::GetPointer(Memory::PhysicalToVirtualAddress(config.GetPhysicalOutputAddress()));
u8* src_pointer = Memory::GetPointer(Memory::PhysicalToVirtualAddress(config.GetPhysicalInputAddress()));
u8* dst_pointer = Memory::GetPointer(Memory::PhysicalToVirtualAddress(config.GetPhysicalOutputAddress()));
unsigned horizontal_scale = (config.scale_horizontally != 0) ? 2 : 1;
unsigned vertical_scale = (config.scale_vertically != 0) ? 2 : 1;
@ -125,7 +125,7 @@ inline void Write(u32 addr, const T data) {
if (config.raw_copy) {
// Raw copies do not perform color conversion nor tiled->linear / linear->tiled conversions
// TODO(Subv): Verify if raw copies perform scaling
memcpy(dest_pointer, source_pointer, config.output_width * config.output_height *
memcpy(dst_pointer, src_pointer, config.output_width * config.output_height *
GPU::Regs::BytesPerPixel(config.output_format));
LOG_TRACE(HW_GPU, "DisplayTriggerTransfer: 0x%08x bytes from 0x%08x(%ux%u)-> 0x%08x(%ux%u), flags 0x%08X, Raw copy",
@ -142,9 +142,7 @@ inline void Write(u32 addr, const T data) {
// right now we're just skipping the extra pixels.
for (u32 y = 0; y < output_height; ++y) {
for (u32 x = 0; x < output_width; ++x) {
struct {
int r, g, b, a;
} source_color = { 0, 0, 0, 0 };
Math::Vec4<u8> src_color = { 0, 0, 0, 0 };
u32 scaled_x = x * horizontal_scale;
u32 scaled_y = y * vertical_scale;
@ -170,77 +168,54 @@ inline void Write(u32 addr, const T data) {
dst_offset = (x + y * output_width) * dst_bytes_per_pixel;
}
const u8* src_pixel = src_pointer + src_offset;
switch (config.input_format) {
case Regs::PixelFormat::RGBA8:
{
u8* srcptr = source_pointer + src_offset;
source_color.r = srcptr[3]; // red
source_color.g = srcptr[2]; // green
source_color.b = srcptr[1]; // blue
source_color.a = srcptr[0]; // alpha
src_color = Color::DecodeRGBA8(src_pixel);
break;
case Regs::PixelFormat::RGB8:
src_color = Color::DecodeRGB8(src_pixel);
break;
case Regs::PixelFormat::RGB565:
src_color = Color::DecodeRGB565(src_pixel);
break;
}
case Regs::PixelFormat::RGB5A1:
{
u16 srcval = *(u16*)(source_pointer + src_offset);
source_color.r = Color::Convert5To8((srcval >> 11) & 0x1F); // red
source_color.g = Color::Convert5To8((srcval >> 6) & 0x1F); // green
source_color.b = Color::Convert5To8((srcval >> 1) & 0x1F); // blue
source_color.a = Color::Convert1To8(srcval & 0x1); // alpha
src_color = Color::DecodeRGB5A1(src_pixel);
break;
}
case Regs::PixelFormat::RGBA4:
{
u16 srcval = *(u16*)(source_pointer + src_offset);
source_color.r = Color::Convert4To8((srcval >> 12) & 0xF); // red
source_color.g = Color::Convert4To8((srcval >> 8) & 0xF); // green
source_color.b = Color::Convert4To8((srcval >> 4) & 0xF); // blue
source_color.a = Color::Convert4To8( srcval & 0xF); // alpha
src_color = Color::DecodeRGBA4(src_pixel);
break;
}
default:
LOG_ERROR(HW_GPU, "Unknown source framebuffer format %x", config.input_format.Value());
break;
}
u8* dst_pixel = dst_pointer + dst_offset;
switch (config.output_format) {
case Regs::PixelFormat::RGBA8:
{
u8* dstptr = dest_pointer + dst_offset;
dstptr[3] = source_color.r;
dstptr[2] = source_color.g;
dstptr[1] = source_color.b;
dstptr[0] = source_color.a;
Color::EncodeRGBA8(src_color, dst_pixel);
break;
}
case Regs::PixelFormat::RGB8:
{
u8* dstptr = dest_pointer + dst_offset;
dstptr[2] = source_color.r; // red
dstptr[1] = source_color.g; // green
dstptr[0] = source_color.b; // blue
Color::EncodeRGB8(src_color, dst_pixel);
break;
case Regs::PixelFormat::RGB565:
Color::EncodeRGB565(src_color, dst_pixel);
break;
}
case Regs::PixelFormat::RGB5A1:
{
u16* dstptr = (u16*)(dest_pointer + dst_offset);
*dstptr = ((source_color.r >> 3) << 11) | ((source_color.g >> 3) << 6)
| ((source_color.b >> 3) << 1) | ( source_color.a >> 7);
Color::EncodeRGB5A1(src_color, dst_pixel);
break;
}
case Regs::PixelFormat::RGBA4:
{
u16* dstptr = (u16*)(dest_pointer + dst_offset);
*dstptr = ((source_color.r >> 4) << 12) | ((source_color.g >> 4) << 8)
| ((source_color.b >> 4) << 4) | ( source_color.a >> 4);
Color::EncodeRGBA4(src_color, dst_pixel);
break;
}
default:
LOG_ERROR(HW_GPU, "Unknown destination framebuffer format %x", config.output_format.Value());