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Add PICA texel-format and topology types

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Slowly stepping the codebase towards having renderer-agnostic types and keeping the translation of PICA-types to OpenGL/VK/DX/Software/etc to the renderer-backend.
This commit is contained in:
Wunkolo 2023-06-17 11:59:45 -07:00
parent d0ae5f0546
commit 78a3f9fa23
6 changed files with 85 additions and 76 deletions
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49
include/PICA/regs.hpp
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@ -127,4 +127,51 @@ namespace PICAInternalRegs {
VertexShaderOpDescriptorData6 = 0x2DC,
VertexShaderOpDescriptorData7 = 0x2DD,
};
}
}
enum class PICAColorFmt : u32 {
RGBA8 = 0,
BGR8 = 1,
RGB5A1 = 2,
RGB565 = 3,
RGBA4 = 4,
// Technically selectable, but their function is unknown
Unknown5 = 5,
Unknown6 = 6,
Unknown7 = 7,
};
enum class PICADepthFmt : u32 {
Depth16 = 0,
Unknown1 = 1, // Technically selectable, but function is unknown
Depth24 = 2,
Depth24Stencil8 = 3,
};
// Size occupied by each pixel in bytes
// All formats are 16BPP except for RGBA8 (32BPP) and BGR8 (24BPP)
inline constexpr usize sizePerPixel(PICAColorFmt format) {
switch (format) {
case PICAColorFmt::BGR8: return 3;
case PICAColorFmt::RGBA8: return 4;
default: return 2;
}
}
inline constexpr usize sizePerPixel(PICADepthFmt format) {
switch (format) {
case PICADepthFmt::Depth16: return 2;
case PICADepthFmt::Depth24: return 3;
case PICADepthFmt::Depth24Stencil8: return 4;
default: return 1; // Invalid format
}
}
enum class PICAPrimType : u32 {
TriangleList = 0,
TriangleStrip = 1,
TriangleFan = 2,
GeometryPrimitive = 3,
};