286 lines
9.1 KiB
C++
286 lines
9.1 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.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/plane.hpp"
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#include "geometry/cube.hpp"
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#include "math/vec3.hpp"
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#include "math/vec4.hpp"
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vec3 _transform(const vec3& point,
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const uint32_t scale,
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const float theta)
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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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float t;
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// object transform
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t = z * cos(theta) - x * sin(theta);
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x = z * sin(theta) + x * cos(theta);
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z = t;
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x *= scale;
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y *= scale;
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z *= scale;
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// world transform
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y += 2.0f;
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x *= 0.8;
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y *= 0.8;
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z *= 0.8;
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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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uint32_t argb8888(const vec4& color)
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{
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return ((static_cast<int>(255.f * color.a) & 0xff) << 24)
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| ((static_cast<int>(255.f * color.r) & 0xff) << 16)
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| ((static_cast<int>(255.f * color.g) & 0xff) << 8)
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| ((static_cast<int>(255.f * color.b) & 0xff) << 0)
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;
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}
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void transform_polygon(ta_parameter_writer& parameter,
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const vec3 * vertices,
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const face& face,
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const float scale,
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const vec4& color0,
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const vec4& color1,
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const float theta)
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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::shadow
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| obj_control::volume::polygon::with_two_volumes;
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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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parameter.append<ta_global_parameter::polygon_type_3>() =
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ta_global_parameter::polygon_type_3(parameter_control_word,
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isp_tsp_instruction_word,
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tsp_instruction_word, // tsp_instruction_word_0
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0, // texture_control_word_0
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tsp_instruction_word, // tsp_instruction_word_1
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0, // texture_control_word_1
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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 = _transform(vertex, scale, theta);
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bool end_of_strip = i == strip_length - 1;
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parameter.append<ta_vertex_parameter::polygon_type_9>() =
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ta_vertex_parameter::polygon_type_9(polygon_vertex_parameter_control_word(end_of_strip),
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point.x,
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point.y,
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point.z,
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argb8888(color0),
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argb8888(color1)
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);
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}
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}
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void transform_modifier_volume(ta_parameter_writer& parameter,
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const vec3 * vertices,
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const face * faces,
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const uint32_t num_faces,
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const float scale)
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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_modifier_volume
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// | group_control::group_en
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// | group_control::user_clip::inside_enable
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;
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const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::volume_instruction::normal_polygon
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| isp_tsp_instruction_word::culling_mode::no_culling;
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parameter.append<ta_global_parameter::modifier_volume>() =
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ta_global_parameter::modifier_volume(parameter_control_word,
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isp_tsp_instruction_word
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);
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for (uint32_t i = 0; i < num_faces; i++) {
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// world transform
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uint32_t ix_a = faces[i][0].vertex;
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uint32_t ix_b = faces[i][1].vertex;
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uint32_t ix_c = faces[i][2].vertex;
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auto& _a = vertices[ix_a];
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auto& _b = vertices[ix_b];
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auto& _c = vertices[ix_c];
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auto a = _transform(_a, scale, 0.f);
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auto b = _transform(_b, scale, 0.f);
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auto c = _transform(_c, scale, 0.f);
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if (i == (num_faces - 1)) {
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const uint32_t last_parameter_control_word = para_control::para_type::polygon_or_modifier_volume
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| para_control::list_type::opaque_modifier_volume
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| obj_control::volume::modifier_volume::last_in_volume;
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const uint32_t last_isp_tsp_instruction_word = isp_tsp_instruction_word::volume_instruction::inside_last_polygon
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| isp_tsp_instruction_word::culling_mode::no_culling;
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parameter.append<ta_global_parameter::modifier_volume>() =
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ta_global_parameter::modifier_volume(last_parameter_control_word,
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last_isp_tsp_instruction_word);
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}
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parameter.append<ta_vertex_parameter::modifier_volume>() =
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ta_vertex_parameter::modifier_volume(modifier_volume_vertex_parameter_control_word(),
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a.x, a.y, a.z,
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b.x, b.y, b.z,
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c.x, c.y, c.z);
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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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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::_16x4byte
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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 = 16 * 4
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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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holly.FPU_SHAD_SCALE = fpu_shad_scale::simple_shadow_enable::parameter_selection_volume_mode;
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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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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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vec4 color0 = {1.0, 0.9, 0.4, 0.2};
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vec4 color1 = {1.0, 0.2, 0.9, 0.9};
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float scale = 2.f;
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for (uint32_t i = 0; i < plane::num_faces; i++) {
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transform_polygon(parameter,
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plane::vertices,
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plane::faces[i],
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scale,
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color0,
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color1,
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theta);
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}
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/*
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for (uint32_t i = 0; i < cube::num_faces; i++) {
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transform_polygon(parameter,
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cube::vertices,
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cube::faces[i],
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1.f,
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{1.0f, 0.0f, 1.0f, 0.0f});
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}
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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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{ // cube
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float scale = 1.f;
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transform_modifier_volume(parameter,
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cube::vertices,
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cube::faces,
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cube::num_faces,
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scale);
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}
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// end of opaque modifier 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_modifier_volume_list();
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core_start_render(frame_ix, num_frames);
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v_sync_in();
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core_wait_end_of_render_video(frame_ix, num_frames);
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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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