Zack Buhman
25e299feba
This is a reshuffling of filenames, extensions, paths, make rules, just because I felt like it.
67 lines
2.8 KiB
C++
67 lines
2.8 KiB
C++
#include <cstdint>
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#include "region_array.hpp"
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#define REGION_ARRAY__LAST_REGION (1 << 31)
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#define REGION_ARRAY__Z_CLEAR (1 << 30)
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#define REGION_ARRAY__PRE_SORT (1 << 29)
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#define REGION_ARRAY__FLUSH_ACCUMULATE (1 << 28)
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#define REGION_ARRAY__TILE_Y_POSITION(n) (((n) & 0x3f) << 8)
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#define REGION_ARRAY__TILE_X_POSITION(n) (((n) & 0x3f) << 2)
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#define REGION_ARRAY__LIST_POINTER__EMPTY (1 << 31)
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#define REGION_ARRAY__LIST_POINTER(n) ((n) & 0xfffffc)
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// this is for a "type 2" region array.
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// region header type is specified in FPU_PARAM_CFG
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struct region_array_entry {
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uint32_t tile; /* 3.7.7 page 216 */
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uint32_t opaque_list_pointer;
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uint32_t opaque_modifier_volume_list_pointer;
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uint32_t translucent_list_pointer;
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uint32_t translucent_modifier_volume_list_pointer;
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uint32_t punch_through_list_pointer;
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};
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// opaque list pointer offset: OPB size * tile index * 4
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void region_array(volatile uint32_t * buf,
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uint32_t ol_base,
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const uint32_t width, // in tile units (1 tile unit = 32 pixels)
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const uint32_t height) // in tile units (1 tile unit = 32 pixels)
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{
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volatile region_array_entry * region_array = reinterpret_cast<volatile region_array_entry *>(buf);
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uint32_t ix = 0;
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// create a "dummy region array [item]" for CORE & TA-related bug #21:
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// "Misshapen tiles or missing tiles occur"
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region_array[ix].tile = REGION_ARRAY__FLUSH_ACCUMULATE;
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region_array[ix].opaque_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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region_array[ix].opaque_modifier_volume_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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region_array[ix].translucent_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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region_array[ix].translucent_modifier_volume_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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region_array[ix].punch_through_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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ix += 1;
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for (uint32_t y = 0; y < height; y++) {
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for (uint32_t x = 0; x < width; x++) {
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region_array[ix].tile = REGION_ARRAY__TILE_Y_POSITION(y)
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| REGION_ARRAY__TILE_X_POSITION(x);
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if (y == (height - 1) && x == (width - 1))
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region_array[ix].tile |= REGION_ARRAY__LAST_REGION;
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uint32_t tile_index = y * width + x;
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constexpr uint32_t opaque_list_opb_size = 16 * 4; // in bytes; this must match O_OPB in TA_ALLOC_CTRL
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region_array[ix].opaque_list_pointer = ol_base + (opaque_list_opb_size * tile_index);
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region_array[ix].opaque_modifier_volume_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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region_array[ix].translucent_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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region_array[ix].translucent_modifier_volume_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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region_array[ix].punch_through_list_pointer = REGION_ARRAY__LIST_POINTER__EMPTY;
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ix += 1;
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}
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}
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}
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