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Bisect TextureFmt and ColorFmt

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Makes framebuffer-formats unrepresentable from texture formats while
allowing them to alias each other. Add utility functions as well that
just re-use the `TextureFmt` ones.
This commit is contained in:
Wunkolo 2023-06-18 08:13:17 -07:00
parent 134e16d8ea
commit 6ee3f73335
5 changed files with 70 additions and 54 deletions
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54
include/PICA/regs.hpp
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@ -130,7 +130,7 @@ namespace PICA {
};
}
enum class ColorFmt : u32 {
enum class TextureFmt : u32 {
RGBA8 = 0x0,
RGB8 = 0x1,
RGBA5551 = 0x2,
@ -147,6 +147,14 @@ namespace PICA {
ETC1A4 = 0xD,
};
enum class ColorFmt : u32 {
RGBA8 = 0x0,
RGB8 = 0x1,
RGBA5551 = 0x2,
RGB565 = 0x3,
RGBA4 = 0x4,
};
enum class DepthFmt : u32 {
Depth16 = 0,
Unknown1 = 1, // Technically selectable, but function is unknown
@ -155,39 +163,47 @@ namespace PICA {
};
// Returns the string representation of a texture format
inline constexpr const char* textureFormatToString(ColorFmt fmt) {
inline constexpr const char* textureFormatToString(TextureFmt fmt) {
switch (fmt) {
case ColorFmt::RGBA8: return "RGBA8";
case ColorFmt::RGB8: return "RGB8";
case ColorFmt::RGBA5551: return "RGBA5551";
case ColorFmt::RGB565: return "RGB565";
case ColorFmt::RGBA4: return "RGBA4";
case ColorFmt::IA8: return "IA8";
case ColorFmt::RG8: return "RG8";
case ColorFmt::I8: return "I8";
case ColorFmt::A8: return "A8";
case ColorFmt::IA4: return "IA4";
case ColorFmt::I4: return "I4";
case ColorFmt::A4: return "A4";
case ColorFmt::ETC1: return "ETC1";
case ColorFmt::ETC1A4: return "ETC1A4";
case TextureFmt::RGBA8: return "RGBA8";
case TextureFmt::RGB8: return "RGB8";
case TextureFmt::RGBA5551: return "RGBA5551";
case TextureFmt::RGB565: return "RGB565";
case TextureFmt::RGBA4: return "RGBA4";
case TextureFmt::IA8: return "IA8";
case TextureFmt::RG8: return "RG8";
case TextureFmt::I8: return "I8";
case TextureFmt::A8: return "A8";
case TextureFmt::IA4: return "IA4";
case TextureFmt::I4: return "I4";
case TextureFmt::A4: return "A4";
case TextureFmt::ETC1: return "ETC1";
case TextureFmt::ETC1A4: return "ETC1A4";
default: return "Unknown";
}
}
inline constexpr const char* textureFormatToString(ColorFmt fmt) {
return textureFormatToString(static_cast<TextureFmt>(fmt));
}
inline constexpr bool hasStencil(DepthFmt format) { return format == PICA::DepthFmt::Depth24Stencil8; }
// Size occupied by each pixel in bytes
// All formats are 16BPP except for RGBA8 (32BPP) and BGR8 (24BPP)
inline constexpr usize sizePerPixel(ColorFmt format) {
inline constexpr usize sizePerPixel(TextureFmt format) {
switch (format) {
case ColorFmt::RGB8: return 3;
case ColorFmt::RGBA8: return 4;
case TextureFmt::RGB8: return 3;
case TextureFmt::RGBA8: return 4;
default: return 2;
}
}
inline constexpr usize sizePerPixel(ColorFmt format) {
return sizePerPixel(static_cast<TextureFmt>(format));
}
inline constexpr usize sizePerPixel(DepthFmt format) {
switch (format) {
case DepthFmt::Depth16: return 2;