293 lines
8.3 KiB
C++
293 lines
8.3 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/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/isp_tsp.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/texture_memory_alloc3.hpp"
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#include "memorymap.hpp"
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#include "geometry/wiffle.hpp"
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#include "math/vec4.hpp"
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constexpr float half_degree = 0.01745329f / 2;
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#define MODEL wiffle
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vec3 rotate(const vec3& vertex, float theta)
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{
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float x = vertex.x;
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float y = vertex.y;
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float z = vertex.z;
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float t;
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t = y * cos(theta) - z * sin(theta);
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z = y * sin(theta) + z * cos(theta);
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y = t;
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float theta2 = 3.14 * sin(theta / 2);
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t = x * cos(theta2) - z * sin(theta2);
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z = x * sin(theta2) + z * cos(theta2);
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x = t;
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return vec3(x, y, z);
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}
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void transform(ta_parameter_writer& parameter,
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const uint32_t face_ix,
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const float theta,
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const vec3 lights[3])
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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::texture
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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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| tsp_instruction_word::use_alpha;
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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 = MODEL::faces[face_ix];
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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 = MODEL::vertices[vertex_ix];
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auto point = rotate(vertex, theta);
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// lighting transform
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uint32_t normal_ix = face[i].normal;
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auto& normal = MODEL::normals[normal_ix];
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auto n = rotate(normal, theta);
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/*
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vec4 color = {0.0, 0.0, 0.0, 1.0};
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// intensity calculation
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{
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auto l = lights[0] - point;
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auto n_dot_l = dot(n, l);
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if (n_dot_l > 0) {
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float distance = magnitude(lights[0] - point);
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float attenuation = 1.0 / (1.0f
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+ 0.07f * distance
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+ 0.007f * (distance * distance));
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color.x += 5.0 * attenuation;
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}
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}
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{
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auto l = lights[1] - point;
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auto n_dot_l = dot(n, l);
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if (n_dot_l > 0) {
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float distance = magnitude(lights[1] - point);
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float attenuation = 1.0 / (1.0f
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+ 0.07f * distance
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+ 0.007f * (distance * distance));
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color.y += 5.0 * attenuation;
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}
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}
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{
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auto l = lights[2] - point;
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auto n_dot_l = dot(n, l);
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if (n_dot_l > 0) {
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float distance = magnitude(lights[2] - point);
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float attenuation = 1.0 / (1.0f
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+ 0.07f * distance
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+ 0.007f * (distance * distance));
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color.z += 9.0 * attenuation;
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}
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}
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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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x *= 1;
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y *= 1;
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z *= 1;
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// camera transform
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z += 90;
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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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float scale_nx = ((n.x - -1) / (1 - -1)) * (1 - 0);
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float scale_ny = ((n.y - -1) / (1 - -1)) * (1 - 0);
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float scale_nz = ((n.z - -1) / (1 - -1)) * (1 - 0);
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float scale_z = ((point.z - -46) / (46 - -46)) * (1 - 0);
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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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scale_z, // alpha
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scale_nx, // r
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scale_ny, // g
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scale_nz // b
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);
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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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__attribute__((aligned(32)));
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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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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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const int render_passes = 1;
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const struct opb_size opb_size[render_passes] = {
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{
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.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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};
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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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uint32_t frame_ix = 0;
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float theta = 0;
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vec3 lights[3] = {
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{0.f, 0.f, 0.f},
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{0.f, 0.f, 0.f},
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{0.f, 0.f, 0.f},
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};
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const int framebuffer_width = 640;
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const int framebuffer_height = 480;
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const int tile_width = framebuffer_width / 32;
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const int tile_height = framebuffer_height / 32;
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region_array_multipass(tile_width,
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tile_height,
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opb_size,
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render_passes,
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texture_memory_alloc.region_array[0].start,
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texture_memory_alloc.object_list[0].start);
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background_parameter2(texture_memory_alloc.background[0].start,
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0xffc0c0c0);
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while (1) {
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ta_polygon_converter_init2(texture_memory_alloc.isp_tsp_parameters[0].start,
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texture_memory_alloc.isp_tsp_parameters[0].end,
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texture_memory_alloc.object_list[0].start,
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texture_memory_alloc.object_list[0].end,
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opb_size[0].total(),
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ta_alloc,
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tile_width,
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tile_height);
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float theta2 = 3.14 * 2 * sin(theta / 7);
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lights[0].x = cos(theta) * 20;
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lights[0].z = sin(theta) * 20;
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lights[1].x = cos(theta2 + half_degree * 180.f) * 20;
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lights[1].z = sin(theta2 + half_degree * 180.f) * 20;
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lights[2].x = cos(theta + half_degree * 360.f) * 20;
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lights[2].z = sin(theta + half_degree * 360.f) * 20;
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auto parameter = ta_parameter_writer(ta_parameter_buf);
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for (uint32_t i = 0; i < MODEL::num_faces; i++) {
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transform(parameter, i, theta, lights);
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}
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/*
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transform2(parameter, lights[0], {1.f, 0.f, 0.f, 1.f});
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transform2(parameter, lights[1], {0.f, 1.f, 0.f, 1.f});
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transform2(parameter, lights[2], {0.f, 0.f, 1.f, 1.f});
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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_translucent_list();
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holly.FB_W_CTRL = fb_w_ctrl::fb_packmode::_8888_argb_32bit;
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uint32_t bytes_per_pixel = 4;
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core_start_render3(texture_memory_alloc.region_array[0].start,
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texture_memory_alloc.isp_tsp_parameters[0].start,
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texture_memory_alloc.background[0].start,
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//texture_memory_alloc.framebuffer[0].start,
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0x100'0000 | texture_memory_alloc.texture.start, // 64-bit area
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framebuffer_width,
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bytes_per_pixel);
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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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holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[0].start;
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while (spg_status::vsync(holly.SPG_STATUS));
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/*
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holly.FB_R_CTRL = fb_r_ctrl::vclk_div::pclk_vclk_1
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| fb_r_ctrl::fb_depth::_0888_rgb_32bit
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| fb_r_ctrl::fb_enable;
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holly.FB_R_SIZE = fb_r_size::fb_modulus(1)
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| fb_r_size::fb_y_size(480 - 3)
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| fb_r_size::fb_x_size((640 * 32) / 32 - 1);
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*/
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//theta += half_degree;
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break;
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}
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}
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