Zack Buhman
bcaa9789cf
The previous texture_memory_alloc.hpp was written based on an incorrect understanding of the "32-bit" and "64-bit" texture memory address mapping. The primary motivation is to rearrange the texture memory address map so that "textures" (64-bit access) do not overlap with 32-bit accesses, such as REGION_BASE or PARAM_BASE.
218 lines
7.0 KiB
C++
218 lines
7.0 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/isp_tsp.hpp"
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#include "holly/region_array.hpp"
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#include "holly/background.hpp"
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#include "memorymap.hpp"
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#include "macaw.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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float u;
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float v;
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};
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vertex cube_faces[][4] = {
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{ // front
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{ -1.0f, -1.0f, 1.0f, 0.f, 0.f},
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{ -1.0f, 1.0f, 1.0f, 0.f, 1.f},
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{ 1.0f, -1.0f, 1.0f, 1.f, 0.f},
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{ 1.0f, 1.0f, 1.0f, 1.f, 1.f},
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},
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{ // back
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{ -1.0f, -1.0f, -1.0f, 1.f, 0.f},
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{ -1.0f, 1.0f, -1.0f, 1.f, 1.f},
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{ 1.0f, -1.0f, -1.0f, 0.f, 0.f},
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{ 1.0f, 1.0f, -1.0f, 0.f, 1.f},
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},
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{ // right side
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{ 1.0f, -1.0f, 1.0f, 0.f, 0.f},
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{ 1.0f, 1.0f, 1.0f, 0.f, 1.f},
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{ 1.0f, -1.0f, -1.0f, 1.f, 0.f},
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{ 1.0f, 1.0f, -1.0f, 1.f, 1.f},
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},
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{ // left side
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{ -1.0f, -1.0f, 1.0f, 1.f, 0.f},
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{ -1.0f, 1.0f, 1.0f, 1.f, 1.f},
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{ -1.0f, -1.0f, -1.0f, 0.f, 0.f},
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{ -1.0f, 1.0f, -1.0f, 0.f, 1.f},
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},
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};
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constexpr uint32_t num_faces = (sizeof (cube_faces)) / (sizeof (cube_faces[0]));
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constexpr uint32_t color = 0xff0000ff;
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static float theta = 0;
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constexpr float half_degree = 0.01745329f / 2.f;
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void transform(ta_parameter_writer& parameter,
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const vertex * strip_vertices,
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const uint32_t strip_length)
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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::packed_color
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| obj_control::texture;
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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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| tsp_instruction_word::texture_u_size::from_int(128)
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| tsp_instruction_word::texture_v_size::from_int(128);
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const uint32_t texture_address = texture_memory_alloc::texture.start;
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const uint32_t texture_control_word = texture_control_word::pixel_format::_565
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| texture_control_word::scan_order::non_twiddled
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| texture_control_word::texture_address(texture_address / 8);
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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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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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for (uint32_t i = 0; i < strip_length; i++) {
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float x = strip_vertices[i].x;
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float y = strip_vertices[i].y;
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float z = strip_vertices[i].z;
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float t;
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t = y * __builtin_cosf(theta) - z * __builtin_sinf(theta);
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z = y * __builtin_sinf(theta) + z * __builtin_cosf(theta);
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y = t;
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float theta2 = 3.14 * __builtin_sinf(theta / 2);
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t = x * __builtin_cosf(theta2) - z * __builtin_sinf(theta2);
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z = x * __builtin_sinf(theta2) + z * __builtin_cosf(theta2);
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x = t;
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z += 3;
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// perspective
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x = x / z;
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y = y / z;
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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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bool end_of_strip = i == strip_length - 1;
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parameter.append<ta_vertex_parameter::polygon_type_3>() =
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ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(end_of_strip),
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x, y, z,
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strip_vertices[i].u,
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strip_vertices[i].v,
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0, // base_color
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0 // offset_color
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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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region_array2(640 / 32, // width
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480 / 32, // height
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opb_size
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);
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background_parameter(0xff220000);
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}
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void copy_macaw_texture()
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{
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auto src = reinterpret_cast<const uint8_t *>(&_binary_macaw_data_start);
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auto size = reinterpret_cast<const uint32_t>(&_binary_macaw_data_size);
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auto texture = reinterpret_cast<volatile uint16_t *>(&texture_memory64[texture_memory_alloc::texture.start / 4]);
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for (uint32_t px = 0; px < size / 3; px++) {
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uint8_t r = src[px * 3 + 0];
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uint8_t g = src[px * 3 + 1];
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uint8_t b = src[px * 3 + 2];
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uint16_t rgb565 = ((r / 8) << 11) | ((g / 4) << 5) | ((b / 8) << 0);
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texture[px] = rgb565;
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}
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}
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uint32_t _ta_parameter_buf[((32 * (5 * 6 + 1)) + 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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copy_macaw_texture();
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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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while (1) {
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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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for (uint32_t i = 0; i < num_faces; i++) {
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transform(parameter, cube_faces[i], 4);
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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_opaque_list();
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core_start_render(frame_ix);
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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);
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while (spg_status::vsync(holly.SPG_STATUS));
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theta += half_degree;
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frame_ix = (frame_ix + 1) & 1;;
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}
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}
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