146 lines
4.6 KiB
C++
146 lines
4.6 KiB
C++
#include <cstdint>
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#include "align.hpp"
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#include "memorymap.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/video_output.hpp"
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#include "holly/ta_bits.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_fifo_polygon_converter.hpp"
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#include "holly/isp_tsp.hpp"
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#include "holly/texture_memory_alloc.hpp"
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#include "holly/background.hpp"
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#include "holly/region_array.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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};
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// screen space coordinates
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const struct vertex quad_vertices[4] = {
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{ 200.f, 360.f, 0.1f },
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{ 200.f, 120.f, 0.1f },
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{ 440.f, 120.f, 0.1f },
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{ 440.f, 360.f, 0.1f },
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};
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uint32_t transform(uint32_t * ta_parameter_buf)
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{
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auto parameter = ta_parameter_writer(ta_parameter_buf);
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const uint32_t parameter_control_word = para_control::para_type::sprite
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| para_control::list_type::opaque
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| obj_control::col_type::packed_color;
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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 uint32_t texture_control_word = 0;
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constexpr uint32_t base_color = 0xffff0000;
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parameter.append<ta_global_parameter::sprite>() =
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ta_global_parameter::sprite(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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base_color,
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0, // offset_color
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0, // data_size_for_sort_dma
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0); // next_address_for_sort_dma
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parameter.append<ta_vertex_parameter::sprite_type_0>() =
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ta_vertex_parameter::sprite_type_0(para_control::para_type::vertex_parameter,
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quad_vertices[0].x,
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quad_vertices[0].y,
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quad_vertices[0].z,
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quad_vertices[1].x,
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quad_vertices[1].y,
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quad_vertices[1].z,
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quad_vertices[2].x,
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quad_vertices[2].y,
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quad_vertices[2].z,
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quad_vertices[3].x,
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quad_vertices[3].y);
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// curiously, there is no quad_veritices[3].z in vertex_sprite_type_0
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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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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, 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 + 64 + 32) + 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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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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uint32_t ta_parameter_size = transform(ta_parameter_buf);
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ta_polygon_converter_transfer(ta_parameter_buf, ta_parameter_size);
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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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frame_ix += 1;
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}
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}
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