335 lines
8.7 KiB
C++
335 lines
8.7 KiB
C++
#include <cstdint>
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#include "align.hpp"
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#include "holly/video_output.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/region_array.hpp"
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#include "holly/background.hpp"
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#include "holly/isp_tsp.hpp"
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#include "memorymap.hpp"
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#include "geometry/heart.hpp"
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#include "math/math.hpp"
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#include "math/vec3.hpp"
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#include "math/vec4.hpp"
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#include "math/mat4x4.hpp"
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using mat4x4 = mat<4, 4, float>;
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struct rotation_weights {
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float drx;
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float dry;
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float drz;
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};
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// randomly generated numbers
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constexpr rotation_weights weights[16] = {
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{-0.8154296875, 0.8583984375, -0.498046875},
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{0.322265625, 0.6796875, 0.3251953125},
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{-0.2626953125, -0.7744140625, 0.37109375},
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{0.5830078125, 0.42578125, 0.5546875},
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{0.9140625, 0.7568359375, -0.037109375},
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{0.8974609375, 0.103515625, -0.2666015625},
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{0.8427734375, -0.4091796875, -0.365234375},
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{0.162109375, -0.603515625, 0.4248046875},
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{-0.47265625, -0.73828125, -0.4912109375},
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{-0.921875, 0.4609375, 0.2216796875},
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{0.400390625, -0.5634765625, -0.3232421875},
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{0.896484375, 0.26953125, -0.951171875},
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{0.541015625, 0.90625, 0.640625},
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{0.5927734375, -0.361328125, 0.21875},
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{-0.9267578125, -0.9423828125, 0.4580078125},
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{0.16796875, 0.3662109375, 0.603515625},
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};
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// randomly generated numbers
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float lighting_weights[16] = {
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0.7314453125,
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0.44921875,
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0.259765625,
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0.3232421875,
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0.1015625,
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0.2529296875,
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0.8662109375,
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0.5439453125,
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0.1337890625,
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0.041015625,
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0.6298828125,
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0.30859375,
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0.517578125,
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0.6259765625,
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0.283203125,
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0.982421875,
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};
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struct model_transform {
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float x;
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float y;
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float z;
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float rx;
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float ry;
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float rz;
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model_transform()
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: x(0.f)
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, y(0.f)
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, z(0.f)
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, rx(0.f)
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, ry(0.f)
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, rz(0.f)
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{ }
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};
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struct model_transform models[] = {
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};
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inline mat4x4 rotate_x(float t)
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{
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return mat4x4(1.f, 0.f, 0.f, 0.f,
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0.f, cos(t), -sin(t), 0.f,
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0.f, sin(t), cos(t), 0.f,
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0.f, 0.f, 0.f, 1.f
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);
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}
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inline mat4x4 rotate_y(float t)
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{
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return mat4x4( cos(t), 0.f, sin(t), 0.f,
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0.f, 1.f, 0.f, 0.f,
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-sin(t), 0.f, cos(t), 0.f,
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0.f, 0.f, 0.f, 1.f
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);
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}
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inline mat4x4 rotate_z(float t)
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{
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return mat4x4(cos(t), -sin(t), 0.f, 0.f,
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sin(t), cos(t), 0.f, 0.f,
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0.f, 0.f, 1.f, 0.f,
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0.f, 0.f, 0.f, 1.f
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);
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}
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inline mat4x4 translate(float x, float y, float z)
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{
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return mat4x4(1.f, 0.f, 0.f, x,
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0.f, 1.f, 0.f, y,
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0.f, 0.f, 1.f, z,
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0.f, 0.f, 0.f, 1.f
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);
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}
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vec3 _transform(const vec4& point)
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{
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float x = point.x;
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float y = point.y;
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float z = point.z;
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// camera transform
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z += 4;
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// perspective
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x = x / z;
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y = y / z;
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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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return {x, y, z};
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}
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void transform_model(ta_parameter_writer& parameter,
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const position__color * vertices,
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const vec3 * normals,
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const face_vn * faces,
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const uint32_t num_faces,
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const model_transform& mt,
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const float lighting_weight)
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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::no_culling;
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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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const mat4x4 mat = translate(mt.x, mt.y, mt.z) * rotate_z(mt.rz) * rotate_y(mt.ry) * rotate_x(mt.rx);
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constexpr uint32_t strip_length = 3;
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for (uint32_t face_ix = 0; face_ix < num_faces; face_ix++) {
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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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auto& face = faces[face_ix];
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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].position;
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auto& color = vertices[vertex_ix].color;
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auto point = mat * vec4(vertex);
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uint32_t normal_ix = face[i].normal;
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auto& normal = normals[normal_ix];
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auto n = mat * vec4(normal);
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vec4 light = {0.f, 0.f, 40.f, 1.f};
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auto l = light - point;
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auto n_dot_l = dot(n, l);
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vec3 c(0.f, 0.f, 0.f);
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c.r += color.r * 0.1;
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c.g += color.g * 0.1;
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c.b += color.b * 0.1;
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if (n_dot_l > 0) {
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float intensity = n_dot_l / (length(n) * length(l));
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c.r += color.r * intensity * lighting_weight;
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c.g += color.g * intensity * lighting_weight;
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c.b += color.b * intensity * lighting_weight;
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}
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auto screen = _transform(point);
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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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screen.x,
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screen.y,
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screen.z,
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1.0f, // alpha
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c.r, // red
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c.g, // green
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c.b // blue
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);
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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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holly.VO_BORDER_COL = 0x00220000;
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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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video_output::set_mode_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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float theta = 0;
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model_transform mt[16] = {};
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for (int x = 0; x < 4; x++) {
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for (int y = 0; y < 4; y++) {
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int ix = y * 4 + x;
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mt[ix].x = -8.f + 5.f * static_cast<float>(x);
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mt[ix].y = -7.5f + 5.f * static_cast<float>(y);
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mt[ix].z = 6.f;
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mt[ix].rx = (-8.f + static_cast<float>(ix)) * -pi / 16;
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mt[ix].ry = (-8.f + static_cast<float>(ix)) * ix * -pi / 16;
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mt[ix].rz = (-8.f + static_cast<float>(ix)) * ix * -pi / 16;
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}
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}
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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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{ // plane
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for (uint32_t i = 0; i < 16; i++) {
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transform_model(parameter,
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heart::vertices,
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heart::normals,
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heart::faces,
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heart::num_faces,
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mt[i],
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(1.f + sin(theta * 2 * lighting_weights[i])) * 0.5f);
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// update model
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auto& weight = weights[i];
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mt[i].rx += weight.drx / 50.f;
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mt[i].ry += weight.dry / 50.f;
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mt[i].rz += weight.drz / 50.f;
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}
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}
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// end of opaque list
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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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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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constexpr float half_degree = 0.01745329f / 2;
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theta += half_degree;
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frame_ix += 1;
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}
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}
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