236 lines
6.8 KiB
C++
236 lines
6.8 KiB
C++
#include <cstdint>
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#include <bit>
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#include "align.hpp"
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#include "vga.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_vertex_parameter.hpp"
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#include "holly/ta_global_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 "holly/region_array.hpp"
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#include "holly/background.hpp"
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#include "holly/texture_memory_alloc.hpp"
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#include "memorymap.hpp"
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#include "sh7091/serial.hpp"
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#include "geometry/border.hpp"
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#include "geometry/circle.hpp"
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#include "math/vec4.hpp"
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#include "maple/maple.hpp"
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#include "maple/maple_impl.hpp"
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#include "maple/maple_bus_bits.hpp"
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#include "maple/maple_bus_commands.hpp"
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#include "maple/maple_bus_ft0.hpp"
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uint32_t _command_buf[1024 / 4 + 32];
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uint32_t _receive_buf[1024 / 4 + 32];
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static ft0::data_transfer::data_format data[4];
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void do_get_condition(uint32_t * command_buf,
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uint32_t * receive_buf)
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{
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using command_type = get_condition;
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using response_type = data_transfer<ft0::data_transfer::data_format>;
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get_condition::data_fields data_fields = {
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.function_type = std::byteswap(function_type::controller)
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};
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maple::init_host_command_all_ports<command_type, response_type>(command_buf, receive_buf,
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data_fields);
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maple::dma_start(command_buf);
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using command_response_type = struct maple::command_response<response_type::data_fields>;
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for (uint8_t port = 0; port < 4; port++) {
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auto response = reinterpret_cast<command_response_type *>(receive_buf);
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auto& bus_data = response[port].bus_data;
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if (bus_data.command_code != response_type::command_code) {
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return;
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}
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auto& data_fields = bus_data.data_fields;
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if ((data_fields.function_type & std::byteswap(function_type::controller)) == 0) {
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return;
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}
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data[port].analog_axis_3 = data_fields.data.analog_axis_3;
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data[port].analog_axis_4 = data_fields.data.analog_axis_4;
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}
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}
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void transform(ta_parameter_writer& parameter,
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const vec3 * vertices,
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const face_vn& face,
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const vec4& color,
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const vec3& position,
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const float scale
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)
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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::opaque
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| obj_control::col_type::floating_color
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| obj_control::gouraud;
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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::cull_if_positive;
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const uint32_t tsp_instruction_word = tsp_instruction_word::src_alpha_instr::one
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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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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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0, // 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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constexpr uint32_t strip_length = 3;
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for (uint32_t i = 0; i < strip_length; i++) {
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// world transform
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uint32_t vertex_ix = face[i].vertex;
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auto& vertex = vertices[vertex_ix];
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auto point = vertex;
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// rotate 90° around the X axis
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float x = point.x;
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float y = point.z;
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float z = point.y;
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// world transform
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x *= scale; // world space
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y *= scale; // world space
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z *= 10;
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// object transform
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x += position.x; // object space
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y += position.y; // object space
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z += position.z; // object space
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// camera transform
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z += 1;
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//y -= 10;
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// screen space transform
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x *= 240.f;
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y *= 240.f;
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x += 320.f;
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y += 240.f;
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z = 1 / z;
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bool end_of_strip = i == strip_length - 1;
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parameter.append<ta_vertex_parameter::polygon_type_1>() =
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ta_vertex_parameter::polygon_type_1(polygon_vertex_parameter_control_word(end_of_strip),
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x, y, z,
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color.w, // alpha
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color.x, // r
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color.y, // g
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color.z // b
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);
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}
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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, 0xff220000);
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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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uint32_t _ta_parameter_buf[((32 * 8192) + 32) / 4];
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void main()
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{
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uint32_t * command_buf = align_32byte(_command_buf);
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uint32_t * receive_buf = align_32byte(_receive_buf);
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vga();
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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::no_list
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| ta_alloc_ctrl::om_opb::no_list
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| ta_alloc_ctrl::o_opb::_16x4byte;
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constexpr struct opb_size opb_size = { .opaque = 16 * 4
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, .opaque_modifier = 0
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, .translucent = 0
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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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while (1) {
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do_get_condition(command_buf, receive_buf);
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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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float x_pos = static_cast<float>(data[0].analog_axis_3 - 0x80) * (0.5 / 127);
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float y_pos = static_cast<float>(data[0].analog_axis_4 - 0x80) * (0.5 / 127);
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auto parameter = ta_parameter_writer(ta_parameter_buf);
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for (uint32_t i = 0; i < border::num_faces; i++) {
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transform(parameter,
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border::vertices,
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border::faces[i],
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{1.0, 0.0, 0.0, 1.0}, // color
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{0.0, 0.0, 0.0}, // position
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0.5f * (1.f / 0.95f) // scale
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);
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}
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for (uint32_t i = 0; i < circle::num_faces; i++) {
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transform(parameter,
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circle::vertices,
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circle::faces[i],
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{0.0, 1.0, 1.0, 1.0}, // color
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{x_pos, y_pos, 0.0}, // position
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0.05f // scale
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);
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}
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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_opaque_list();
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core_start_render(frame_ix, num_frames);
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v_sync_out();
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core_wait_end_of_render_video(frame_ix, num_frames);
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frame_ix += 1;
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}
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}
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