Zack Buhman
f8dc9f1250
The intent of this example is to change video output modes in response to swapping the cable type.
188 lines
6.8 KiB
C++
188 lines
6.8 KiB
C++
#include "align.hpp"
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#include "dve.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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#include "sh7091/serial.hpp"
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void print_cable_type_resolution(const uint32_t cable_type, const struct video_output::framebuffer_resolution& framebuffer_resolution)
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{
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serial::string("cable type: ");
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switch (cable_type) {
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case pdtra::cable_type::vga: serial::string("vga\n"); break;
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case pdtra::cable_type::rgb: serial::string("rgb\n"); break;
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case pdtra::cable_type::cvbs_yc: serial::string("cvbs_yc\n"); break;
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default: serial::string("undefined/reserved\n"); break;
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}
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serial::string("framebuffer resolution: ");
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serial::integer<uint16_t, serial::dec>(framebuffer_resolution.width, ' ', 3);
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serial::integer<uint16_t, serial::dec>(framebuffer_resolution.height, '\n', 3);
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}
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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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{ -0.5f, 0.5f, 0.1f },
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{ -0.5f, -0.5f, 0.1f },
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{ 0.5f, -0.5f, 0.1f },
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{ 0.5f, 0.5f, 0.1f },
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};
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struct vertex transform_vertex(const struct vertex& v,
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const struct video_output::framebuffer_resolution& framebuffer_resolution,
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const float theta)
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{
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float x = v.x * __builtin_cosf(theta) - v.y * __builtin_sinf(theta);
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float y = v.x * __builtin_sinf(theta) + v.y * __builtin_cosf(theta);
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return {
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x * (framebuffer_resolution.height / 2) + (framebuffer_resolution.width / 2),
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y * (framebuffer_resolution.height / 2) + (framebuffer_resolution.height / 2),
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v.z,
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};
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}
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uint32_t transform(uint32_t * ta_parameter_buf,
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const struct video_output::framebuffer_resolution& framebuffer_resolution,
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const float theta)
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{
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auto parameter = ta_parameter_writer(ta_parameter_buf);
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auto a = transform_vertex(quad_vertices[0], framebuffer_resolution, theta);
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auto b = transform_vertex(quad_vertices[1], framebuffer_resolution, theta);
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auto c = transform_vertex(quad_vertices[2], framebuffer_resolution, theta);
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auto d = transform_vertex(quad_vertices[3], framebuffer_resolution, theta);
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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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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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d.x, d.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, const struct video_output::framebuffer_resolution& framebuffer_resolution)
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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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framebuffer_resolution.width / 32, // width
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framebuffer_resolution.height / 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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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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uint32_t cable_type = video_output::get_cable_type();
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auto framebuffer_resolution = video_output::set_mode_by_cable_type(cable_type);
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print_cable_type_resolution(cable_type, framebuffer_resolution);
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init_texture_memory(opb_size, framebuffer_resolution);
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core_init();
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float theta = 0;
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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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framebuffer_resolution.width / 32,
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framebuffer_resolution.height / 32);
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uint32_t ta_parameter_size = transform(ta_parameter_buf, framebuffer_resolution, theta);
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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((offsetof (struct texture_memory_alloc, framebuffer)),
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framebuffer_resolution.width, // frame_width
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0x00096000, // frame_size
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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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if (cable_type != video_output::get_cable_type()) {
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cable_type = video_output::get_cable_type();
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framebuffer_resolution = video_output::set_mode_by_cable_type(cable_type);
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print_cable_type_resolution(cable_type, framebuffer_resolution);
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init_texture_memory(opb_size, framebuffer_resolution);
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}
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while (spg_status::vsync(holly.SPG_STATUS));
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constexpr float half_degree = 0.01745329f / 2.f;
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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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