Zack Buhman
511d99563d
From the GCC manual.
> GCC permits a C structure to have no members:
struct empty {
};
> The structure has size zero. In C++, empty structures are part of the
> language. G++ treats empty structures as if they had a single member of type
> char.
I was not aware of the different behavior in C++.
This fixes every maple example--most were broken for multiple reasons, including
this one.
This also enables SH4 caching. This includes linking code/data into the P1
area (previously this was not the case).
The maple examples (which indeed involve much use of DMA) require much work to
successfully work with the operand and copyback caches. The vibration example
currently is the most complete, though I should consider more on how I want to
structure maple response operand cache invalidation more generally.
308 lines
9.6 KiB
C++
308 lines
9.6 KiB
C++
#include <cstdint>
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#include "align.hpp"
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#include "vga.hpp"
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#include "holly/texture_memory_alloc.hpp"
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#include "holly/holly.hpp"
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#include "holly/core.hpp"
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#include "holly/core_bits.hpp"
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#include "holly/ta_fifo_polygon_converter.hpp"
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#include "holly/ta_parameter.hpp"
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#include "holly/ta_global_parameter.hpp"
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#include "holly/ta_vertex_parameter.hpp"
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#include "holly/ta_bits.hpp"
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#include "holly/isp_tsp.hpp"
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#include "memorymap.hpp"
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#include "holly/background.hpp"
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#include "holly/region_array.hpp"
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#include "twiddle.hpp"
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#include "palette.hpp"
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#include "font/font.hpp"
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#include "dejavusansmono.hpp"
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struct vertex {
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float x;
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float y;
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float z;
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float u;
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float v;
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};
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const struct vertex strip_vertices[4] = {
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// [ position ] [ uv coordinates ]
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{ 0.f, 1.f, 0.f, 0.f, 1.f, },
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{ 0.f, 0.f, 0.f, 0.f, 0.f, },
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{ 1.f, 1.f, 0.f, 1.f, 1.f, },
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{ 1.f, 0.f, 0.f, 1.f, 0.f, },
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};
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constexpr uint32_t strip_length = (sizeof (strip_vertices)) / (sizeof (struct vertex));
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uint32_t transform(ta_parameter_writer& parameter,
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const uint32_t texture_width, uint32_t texture_height,
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const uint32_t first_char_code,
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const glyph * glyphs,
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const char * s, const uint32_t len,
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const uint32_t y_offset)
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{
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uint32_t texture_address = (offsetof (struct texture_memory_alloc, texture));
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uint32_t advance = 0; // in 26.6 fixed-point
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for (uint32_t string_ix = 0; string_ix < len; string_ix++) {
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char c = s[string_ix];
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auto& glyph = glyphs[c - first_char_code];
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if (glyph.bitmap.width == 0 || glyph.bitmap.height == 0) {
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advance += glyph.metrics.horiAdvance;
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continue;
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}
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const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
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| para_control::list_type::translucent
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| obj_control::col_type::packed_color
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| obj_control::texture;
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const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
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| isp_tsp_instruction_word::culling_mode::no_culling;
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const uint32_t tsp_instruction_word = tsp_instruction_word::src_alpha_instr::src_alpha
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| tsp_instruction_word::dst_alpha_instr::one
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| tsp_instruction_word::fog_control::no_fog
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| tsp_instruction_word::use_alpha
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| tsp_instruction_word::texture_u_size::from_int(texture_width)
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| tsp_instruction_word::texture_v_size::from_int(texture_height);
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const uint32_t texture_control_word = texture_control_word::pixel_format::_4bpp_palette
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| texture_control_word::scan_order::twiddled
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| texture_control_word::texture_address(texture_address / 8);
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parameter.append<ta_global_parameter::polygon_type_0>() =
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ta_global_parameter::polygon_type_0(parameter_control_word,
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isp_tsp_instruction_word,
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tsp_instruction_word,
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texture_control_word,
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0, // data_size_for_sort_dma
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0 // next_address_for_sort_dma
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);
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for (uint32_t i = 0; i < strip_length; i++) {
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float x = strip_vertices[i].x;
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float y = strip_vertices[i].y;
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float z = strip_vertices[i].z;
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x *= glyph.bitmap.width;
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y *= glyph.bitmap.height;
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x += 100.f + ((advance + glyph.metrics.horiBearingX) >> 6);
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y += 200.f - ((glyph.metrics.horiBearingY) >> 6);
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y += y_offset >> 6;
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z = 1.f / (z + 10.f);
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float u = strip_vertices[i].u;
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float v = strip_vertices[i].v;
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u *= glyph.bitmap.width;
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v *= glyph.bitmap.height;
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u += glyph.bitmap.x;
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v += glyph.bitmap.y;
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u = u / static_cast<float>(texture_width);
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v = v / static_cast<float>(texture_height);
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bool end_of_strip = i == strip_length - 1;
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parameter.append<ta_vertex_parameter::polygon_type_3>() =
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ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(end_of_strip),
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x, y, z,
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u, v,
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0, // base_color
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0 // offset_color
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);
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}
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advance += glyph.metrics.horiAdvance;
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}
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return parameter.offset;
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}
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uint32_t transform2(ta_parameter_writer& parameter,
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const uint32_t texture_width, uint32_t texture_height)
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{
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uint32_t texture_address = (offsetof (struct texture_memory_alloc, texture));
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const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
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| para_control::list_type::translucent
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| obj_control::col_type::packed_color
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| obj_control::texture;
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const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
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| isp_tsp_instruction_word::culling_mode::no_culling;
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const uint32_t tsp_instruction_word = tsp_instruction_word::src_alpha_instr::src_alpha
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| tsp_instruction_word::dst_alpha_instr::zero
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| tsp_instruction_word::fog_control::no_fog
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| tsp_instruction_word::texture_u_size::from_int(texture_width)
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| tsp_instruction_word::texture_v_size::from_int(texture_height);
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const uint32_t texture_control_word = texture_control_word::pixel_format::_4bpp_palette
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| texture_control_word::scan_order::twiddled
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| texture_control_word::texture_address(texture_address / 8);
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parameter.append<ta_global_parameter::polygon_type_0>() =
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ta_global_parameter::polygon_type_0(parameter_control_word,
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isp_tsp_instruction_word,
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tsp_instruction_word,
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texture_control_word,
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0, // data_size_for_sort_dma
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0 // next_address_for_sort_dma
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);
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for (uint32_t i = 0; i < strip_length; i++) {
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float x = strip_vertices[i].x;
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float y = strip_vertices[i].y;
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float z = strip_vertices[i].z;
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x *= static_cast<float>(texture_width);
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y *= static_cast<float>(texture_height);
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x += 50.f;
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y += 50.f;
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z = 1.f / (z + 9.f);
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float u = strip_vertices[i].u;
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float v = strip_vertices[i].v;
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bool end_of_strip = i == strip_length - 1;
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parameter.append<ta_vertex_parameter::polygon_type_3>() =
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ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(end_of_strip),
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x, y, z,
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u, v,
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0, // base_color
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0 // offset_color
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);
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}
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return parameter.offset;
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}
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void init_texture_memory(const struct opb_size& opb_size)
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{
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auto mem = reinterpret_cast<volatile texture_memory_alloc *>(texture_memory32);
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background_parameter(mem->background, 0xff0000ff);
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region_array2(mem->region_array,
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(offsetof (struct texture_memory_alloc, object_list)),
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640 / 32, // width
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480 / 32, // height
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opb_size
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);
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}
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void inflate_font(const uint32_t * src,
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const uint32_t stride,
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const uint32_t curve_end_ix)
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{
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auto mem = reinterpret_cast<volatile texture_memory_alloc *>(texture_memory64);
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auto texture = reinterpret_cast<volatile uint32_t *>(mem->texture);
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twiddle::texture3<4, 8>(texture, reinterpret_cast<const uint8_t *>(src),
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stride,
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curve_end_ix);
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}
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uint32_t _ta_parameter_buf[((32 * 10 * 17) + 32) / 4];
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void main()
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{
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vga();
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auto font = reinterpret_cast<const struct font *>(&_binary_dejavusansmono_data_start);
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auto glyphs = reinterpret_cast<const struct glyph *>(&font[1]);
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auto texture = reinterpret_cast<const uint32_t *>(&glyphs[font->glyph_count]);
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/*
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serial::integer<uint32_t>(font->first_char_code);
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serial::integer<uint32_t>(font->glyph_count);
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serial::integer<uint32_t>(font->glyph_height);
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serial::integer<uint32_t>(font->texture_stride);
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serial::integer<uint32_t>(font->texture_width);
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serial::integer<uint32_t>(font->texture_height);
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serial::character('\n');
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serial::integer<uint32_t>(((uint32_t)glyphs) - ((uint32_t)font));
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serial::integer<uint32_t>(((uint32_t)texture) - ((uint32_t)font));
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*/
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inflate_font(texture,
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font->texture_stride,
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font->max_z_curve_ix);
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palette_data<16>();
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// The address of `ta_parameter_buf` must be a multiple of 32 bytes.
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// This is mandatory for ch2-dma to the ta fifo polygon converter.
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uint32_t * ta_parameter_buf = align_32byte(_ta_parameter_buf);
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constexpr uint32_t ta_alloc = ta_alloc_ctrl::pt_opb::no_list
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| ta_alloc_ctrl::tm_opb::no_list
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| ta_alloc_ctrl::t_opb::_16x4byte
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| ta_alloc_ctrl::om_opb::no_list
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| ta_alloc_ctrl::o_opb::no_list;
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constexpr struct opb_size opb_size = { .opaque = 0
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, .opaque_modifier = 0
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, .translucent = 16 * 4
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, .translucent_modifier = 0
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, .punch_through = 0
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};
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holly.SOFTRESET = softreset::pipeline_soft_reset
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| softreset::ta_soft_reset;
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holly.SOFTRESET = 0;
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core_init();
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init_texture_memory(opb_size);
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uint32_t frame_ix = 0;
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constexpr uint32_t num_frames = 1;
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const char ana[18] = "A from ana i know";
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const char cabal[27] = "where is this secret cabal";
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while (true) {
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ta_polygon_converter_init(opb_size.total(),
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ta_alloc,
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640 / 32,
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480 / 32);
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auto parameter = ta_parameter_writer(ta_parameter_buf);
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transform2(parameter,
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font->texture_width, font->texture_height);
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transform(parameter,
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font->texture_width, font->texture_height,
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font->first_char_code,
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glyphs,
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ana, 17,
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font->glyph_height * 0);
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transform(parameter,
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font->texture_width, font->texture_height,
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font->first_char_code,
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glyphs,
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cabal, 26,
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font->glyph_height * 1);
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parameter.append<ta_global_parameter::end_of_list>() = ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
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ta_polygon_converter_transfer(ta_parameter_buf, parameter.offset);
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ta_wait_translucent_list();
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core_start_render(frame_ix, num_frames);
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core_wait_end_of_render_video();
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while (!spg_status::vsync(holly.SPG_STATUS));
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core_flip(frame_ix, num_frames);
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while (spg_status::vsync(holly.SPG_STATUS));
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frame_ix++;
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}
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}
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