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Pica: Add register definition for vertex loading and rendering.

This commit is contained in:
Tony Wasserka 2014-07-26 15:17:37 +02:00
parent 76a586de49
commit 1a43f69477
1 changed files with 126 additions and 31 deletions
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109
src/video_core/pica.h
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@ -11,6 +11,8 @@
#include "common/bit_field.h"
#include "common/common_types.h"
#include "core/mem_map.h"
namespace Pica {
// Returns index corresponding to the Regs member labeled by field_name
@ -50,7 +52,7 @@ struct Regs {
INSERT_PADDING_WORDS(0x1bc);
union {
struct {
enum class Format : u64 {
BYTE = 0,
UBYTE = 1,
@ -58,7 +60,16 @@ struct Regs {
FLOAT = 3,
};
BitField< 0, 2, Format> format0;
BitField<0, 29, u32> base_address;
inline u32 GetBaseAddress() const {
// TODO: Ugly, should fix PhysicalToVirtualAddress instead
return (base_address * 8) - Memory::FCRAM_PADDR + Memory::HEAP_GSP_VADDR;
}
// Descriptor for internal vertex attributes
union {
BitField< 0, 2, Format> format0; // size of one element
BitField< 2, 2, u64> size0; // number of elements minus 1
BitField< 4, 2, Format> format1;
BitField< 6, 2, u64> size1;
@ -84,10 +95,92 @@ struct Regs {
BitField<46, 2, u64> size11;
BitField<48, 12, u64> attribute_mask;
BitField<60, 4, u64> num_attributes; // number of total attributes minus 1
} vertex_descriptor;
INSERT_PADDING_WORDS(0xfe);
// number of total attributes minus 1
BitField<60, 4, u64> num_extra_attributes;
};
inline Format GetFormat(int n) const {
Format formats[] = {
format0, format1, format2, format3,
format4, format5, format6, format7,
format8, format9, format10, format11
};
return formats[n];
}
inline int GetNumElements(int n) const {
int sizes[] = {
size0, size1, size2, size3,
size4, size5, size6, size7,
size8, size9, size10, size11
};
return sizes[n]+1;
}
inline int GetElementSizeInBytes(int n) const {
return (GetFormat(n) == Format::FLOAT) ? 4 :
(GetFormat(n) == Format::SHORT) ? 2 : 1;
}
inline int GetStride(int n) const {
return GetNumElements(n) * GetElementSizeInBytes(n);
}
inline int GetNumTotalAttributes() const {
return num_extra_attributes+1;
}
// Attribute loaders map the source vertex data to input attributes
// This e.g. allows to load different attributes from different memory locations
struct Loader {
// Source attribute data offset from the base address
u32 data_offset;
union {
BitField< 0, 4, u64> comp0;
BitField< 4, 4, u64> comp1;
BitField< 8, 4, u64> comp2;
BitField<12, 4, u64> comp3;
BitField<16, 4, u64> comp4;
BitField<20, 4, u64> comp5;
BitField<24, 4, u64> comp6;
BitField<28, 4, u64> comp7;
BitField<32, 4, u64> comp8;
BitField<36, 4, u64> comp9;
BitField<40, 4, u64> comp10;
BitField<44, 4, u64> comp11;
// bytes for a single vertex in this loader
BitField<48, 8, u64> byte_count;
BitField<60, 4, u64> component_count;
};
inline int GetComponent(int n) const {
int components[] = {
comp0, comp1, comp2, comp3,
comp4, comp5, comp6, comp7,
comp8, comp9, comp10, comp11
};
return components[n];
}
} attribute_loaders[12];
} vertex_attributes;
struct {
enum IndexFormat : u32 {
BYTE = 0,
SHORT = 1,
};
union {
BitField<0, 31, u32> offset; // relative to base attribute address
BitField<31, 1, IndexFormat> format;
};
} index_array;
INSERT_PADDING_WORDS(0xd8);
#undef INSERT_PADDING_WORDS_HELPER1
#undef INSERT_PADDING_WORDS_HELPER2
@ -112,7 +205,8 @@ struct Regs {
ADD_FIELD(viewport_size_x);
ADD_FIELD(viewport_size_y);
ADD_FIELD(vertex_descriptor);
ADD_FIELD(vertex_attributes);
ADD_FIELD(index_array);
#undef ADD_FIELD
#endif // _MSC_VER
@ -153,7 +247,8 @@ private:
ASSERT_REG_POSITION(viewport_size_x, 0x41);
ASSERT_REG_POSITION(viewport_size_y, 0x43);
ASSERT_REG_POSITION(vertex_descriptor, 0x200);
ASSERT_REG_POSITION(vertex_attributes, 0x200);
ASSERT_REG_POSITION(index_array, 0x227);
#undef ASSERT_REG_POSITION
#endif // !defined(_MSC_VER)