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example: unrot macaw_multipass

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This commit is contained in:
Zack Buhman 2025-05-17 04:49:48 -05:00
parent ab51108751
commit 5c27b107f3
1 changed files with 19 additions and 22 deletions
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41
example/macaw_multipass.cpp
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@ -40,13 +40,11 @@ constexpr uint32_t strip_length = (sizeof (strip_vertices)) / (sizeof (struct ve
static float theta = 0;
constexpr float half_degree = 0.01745329f / 2.f;
uint32_t transform(uint32_t * ta_parameter_buf,
const vertex * strip_vertices,
const uint32_t strip_length,
const uint32_t render_pass)
void transform(ta_parameter_writer& writer,
const vertex * strip_vertices,
const uint32_t strip_length,
const uint32_t render_pass)
{
auto parameter = ta_parameter_writer(ta_parameter_buf);
const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
| isp_tsp_instruction_word::culling_mode::no_culling;
@ -68,7 +66,7 @@ uint32_t transform(uint32_t * ta_parameter_buf,
| texture_control_word::scan_order::non_twiddled
| texture_control_word::texture_address(texture_address / 8);
parameter.append<ta_global_parameter::polygon_type_0>() =
writer.append<ta_global_parameter::polygon_type_0>() =
ta_global_parameter::polygon_type_0(parameter_control_word,
isp_tsp_instruction_word,
tsp_instruction_word,
@ -90,7 +88,7 @@ uint32_t transform(uint32_t * ta_parameter_buf,
const uint32_t texture_control_word = 0;
parameter.append<ta_global_parameter::polygon_type_0>() =
writer.append<ta_global_parameter::polygon_type_0>() =
ta_global_parameter::polygon_type_0(parameter_control_word,
isp_tsp_instruction_word,
tsp_instruction_word,
@ -117,7 +115,7 @@ uint32_t transform(uint32_t * ta_parameter_buf,
y += 240.f;
z = 1.f / (z + 10.f);
parameter.append<ta_vertex_parameter::polygon_type_3>() =
writer.append<ta_vertex_parameter::polygon_type_3>() =
ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(end_of_strip),
x, y, z,
strip_vertices[i].u,
@ -127,9 +125,7 @@ uint32_t transform(uint32_t * ta_parameter_buf,
);
}
parameter.append<ta_global_parameter::end_of_list>() = ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
return parameter.offset;
writer.append<ta_global_parameter::end_of_list>() = ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
}
void init_texture_memory(const struct opb_size * opb_size, uint32_t render_passes)
@ -144,7 +140,7 @@ void init_texture_memory(const struct opb_size * opb_size, uint32_t render_passe
background_parameter(0xff00ff00);
}
uint32_t _ta_parameter_buf[((32 * (strip_length + 2)) + 32) / 4];
uint32_t ta_parameter_buf[((32 * (strip_length + 2)) + 32) / 4] __attribute__((aligned(32)));
void copy_macaw_texture()
{
@ -166,10 +162,6 @@ void main()
video_output::set_mode_vga();
copy_macaw_texture();
// The address of `ta_parameter_buf` must be a multiple of 32 bytes.
// This is mandatory for ch2-dma to the ta fifo polygon converter.
uint32_t * ta_parameter_buf = align_32byte(_ta_parameter_buf);
constexpr uint32_t ta_alloc[2] =
{ ta_alloc_ctrl::pt_opb::no_list
| ta_alloc_ctrl::tm_opb::no_list
@ -210,7 +202,8 @@ void main()
constexpr uint32_t tiles = (640 / 32) * (480 / 32);
uint32_t frame_ix = 0;
uint32_t ta_parameter_size;
ta_parameter_writer writer = ta_parameter_writer(ta_parameter_buf, (sizeof (ta_parameter_buf)));
while (true) {
// first render pass
@ -218,15 +211,19 @@ void main()
ta_alloc[0],
640 / 32,
480 / 32);
ta_parameter_size = transform(ta_parameter_buf, strip_vertices, strip_length, 0);
ta_polygon_converter_transfer(ta_parameter_buf, ta_parameter_size);
writer.offset = 0;
transform(writer, strip_vertices, strip_length, 0);
ta_polygon_converter_writeback(writer.buf, writer.offset);
ta_polygon_converter_transfer(writer.buf, writer.offset);
ta_wait_opaque_list();
// second render pass
ta_polygon_converter_cont(opb_size[0].total() * tiles,
ta_alloc[1]);
ta_parameter_size = transform(ta_parameter_buf, strip_vertices, strip_length, 1);
ta_polygon_converter_transfer(ta_parameter_buf, ta_parameter_size);
writer.offset = 0;
transform(writer, strip_vertices, strip_length, 1);
ta_polygon_converter_writeback(writer.buf, writer.offset);
ta_polygon_converter_transfer(writer.buf, writer.offset);
ta_wait_translucent_list();
core_start_render(frame_ix);