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parallel_imp.cpp
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parallel_imp.cpp
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// Adapted from https://github.com/Themaister/parallel-rdp/blob/master/integration_example.cpp
#include "vulkan_headers.hpp"
#include "parallel_imp.h"
#include "screen.h"
#include <memory>
#include <vector>
#include "rdp_device.hpp"
#include "wsi.hpp"
#include "wsi_platform.hpp"
static int cmd_cur;
static int cmd_ptr;
static uint32_t cmd_data[0x00040000 >> 2];
static std::unique_ptr<RDP::CommandProcessor> processor;
static std::unique_ptr<Vulkan::WSI> wsi;
static std::unique_ptr<MupenWSIPlatform> wsi_platform;
int32_t vk_rescaling;
bool vk_ssreadbacks;
bool vk_ssdither;
unsigned vk_overscan;
unsigned vk_vertical_stretch;
unsigned vk_downscaling_steps;
bool vk_native_texture_lod;
bool vk_native_tex_rect;
bool vk_synchronous, vk_divot_filter, vk_gamma_dither;
bool vk_vi_aa, vk_vi_scale, vk_dither_filter;
bool vk_interlacing;
static const unsigned cmd_len_lut[64] = {
1, 1, 1, 1, 1, 1, 1, 1, 4, 6, 12, 14, 12, 14, 20, 22,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
};
static const uint32_t vertex_spirv[] =
{0x07230203,0x00010000,0x000d000a,0x00000034,
0x00000000,0x00020011,0x00000001,0x0006000b,
0x00000001,0x4c534c47,0x6474732e,0x3035342e,
0x00000000,0x0003000e,0x00000000,0x00000001,
0x0008000f,0x00000000,0x00000004,0x6e69616d,
0x00000000,0x00000008,0x00000016,0x0000002b,
0x00040047,0x00000008,0x0000000b,0x0000002a,
0x00050048,0x00000014,0x00000000,0x0000000b,
0x00000000,0x00050048,0x00000014,0x00000001,
0x0000000b,0x00000001,0x00050048,0x00000014,
0x00000002,0x0000000b,0x00000003,0x00050048,
0x00000014,0x00000003,0x0000000b,0x00000004,
0x00030047,0x00000014,0x00000002,0x00040047,
0x0000002b,0x0000001e,0x00000000,0x00020013,
0x00000002,0x00030021,0x00000003,0x00000002,
0x00040015,0x00000006,0x00000020,0x00000001,
0x00040020,0x00000007,0x00000001,0x00000006,
0x0004003b,0x00000007,0x00000008,0x00000001,
0x0004002b,0x00000006,0x0000000a,0x00000000,
0x00020014,0x0000000b,0x00030016,0x0000000f,
0x00000020,0x00040017,0x00000010,0x0000000f,
0x00000004,0x00040015,0x00000011,0x00000020,
0x00000000,0x0004002b,0x00000011,0x00000012,
0x00000001,0x0004001c,0x00000013,0x0000000f,
0x00000012,0x0006001e,0x00000014,0x00000010,
0x0000000f,0x00000013,0x00000013,0x00040020,
0x00000015,0x00000003,0x00000014,0x0004003b,
0x00000015,0x00000016,0x00000003,0x0004002b,
0x0000000f,0x00000017,0xbf800000,0x0004002b,
0x0000000f,0x00000018,0x00000000,0x0004002b,
0x0000000f,0x00000019,0x3f800000,0x0007002c,
0x00000010,0x0000001a,0x00000017,0x00000017,
0x00000018,0x00000019,0x00040020,0x0000001b,
0x00000003,0x00000010,0x0004002b,0x00000006,
0x0000001f,0x00000001,0x0004002b,0x0000000f,
0x00000023,0x40400000,0x0007002c,0x00000010,
0x00000024,0x00000017,0x00000023,0x00000018,
0x00000019,0x0007002c,0x00000010,0x00000027,
0x00000023,0x00000017,0x00000018,0x00000019,
0x00040017,0x00000029,0x0000000f,0x00000002,
0x00040020,0x0000002a,0x00000003,0x00000029,
0x0004003b,0x0000002a,0x0000002b,0x00000003,
0x0004002b,0x0000000f,0x0000002f,0x3f000000,
0x0005002c,0x00000029,0x00000033,0x0000002f,
0x0000002f,0x00050036,0x00000002,0x00000004,
0x00000000,0x00000003,0x000200f8,0x00000005,
0x0004003d,0x00000006,0x00000009,0x00000008,
0x000500aa,0x0000000b,0x0000000c,0x00000009,
0x0000000a,0x000300f7,0x0000000e,0x00000000,
0x000400fa,0x0000000c,0x0000000d,0x0000001d,
0x000200f8,0x0000000d,0x00050041,0x0000001b,
0x0000001c,0x00000016,0x0000000a,0x0003003e,
0x0000001c,0x0000001a,0x000200f9,0x0000000e,
0x000200f8,0x0000001d,0x000500aa,0x0000000b,
0x00000020,0x00000009,0x0000001f,0x000300f7,
0x00000022,0x00000000,0x000400fa,0x00000020,
0x00000021,0x00000026,0x000200f8,0x00000021,
0x00050041,0x0000001b,0x00000025,0x00000016,
0x0000000a,0x0003003e,0x00000025,0x00000024,
0x000200f9,0x00000022,0x000200f8,0x00000026,
0x00050041,0x0000001b,0x00000028,0x00000016,
0x0000000a,0x0003003e,0x00000028,0x00000027,
0x000200f9,0x00000022,0x000200f8,0x00000022,
0x000200f9,0x0000000e,0x000200f8,0x0000000e,
0x00050041,0x0000001b,0x0000002c,0x00000016,
0x0000000a,0x0004003d,0x00000010,0x0000002d,
0x0000002c,0x0007004f,0x00000029,0x0000002e,
0x0000002d,0x0000002d,0x00000000,0x00000001,
0x0005008e,0x00000029,0x00000030,0x0000002e,
0x0000002f,0x00050081,0x00000029,0x00000032,
0x00000030,0x00000033,0x0003003e,0x0000002b,
0x00000032,0x000100fd,0x00010038};
static const uint32_t fragment_spirv[] =
{0x07230203,0x00010000,0x000d000a,0x00000015,
0x00000000,0x00020011,0x00000001,0x0006000b,
0x00000001,0x4c534c47,0x6474732e,0x3035342e,
0x00000000,0x0003000e,0x00000000,0x00000001,
0x0007000f,0x00000004,0x00000004,0x6e69616d,
0x00000000,0x00000009,0x00000011,0x00030010,
0x00000004,0x00000007,0x00040047,0x00000009,
0x0000001e,0x00000000,0x00040047,0x0000000d,
0x00000022,0x00000000,0x00040047,0x0000000d,
0x00000021,0x00000000,0x00040047,0x00000011,
0x0000001e,0x00000000,0x00020013,0x00000002,
0x00030021,0x00000003,0x00000002,0x00030016,
0x00000006,0x00000020,0x00040017,0x00000007,
0x00000006,0x00000004,0x00040020,0x00000008,
0x00000003,0x00000007,0x0004003b,0x00000008,
0x00000009,0x00000003,0x00090019,0x0000000a,
0x00000006,0x00000001,0x00000000,0x00000000,
0x00000000,0x00000001,0x00000000,0x0003001b,
0x0000000b,0x0000000a,0x00040020,0x0000000c,
0x00000000,0x0000000b,0x0004003b,0x0000000c,
0x0000000d,0x00000000,0x00040017,0x0000000f,
0x00000006,0x00000002,0x00040020,0x00000010,
0x00000001,0x0000000f,0x0004003b,0x00000010,
0x00000011,0x00000001,0x0004002b,0x00000006,
0x00000013,0x00000000,0x00050036,0x00000002,
0x00000004,0x00000000,0x00000003,0x000200f8,
0x00000005,0x0004003d,0x0000000b,0x0000000e,
0x0000000d,0x0004003d,0x0000000f,0x00000012,
0x00000011,0x00070058,0x00000007,0x00000014,
0x0000000e,0x00000012,0x00000002,0x00000013,
0x0003003e,0x00000009,0x00000014,0x000100fd,
0x00010038};
static void calculate_viewport(float* x, float* y, float* width, float* height)
{
int32_t display_width = (window_widescreen ? 854 : 640) * vk_rescaling;
int32_t display_height = 480 * vk_rescaling;
*width = window_width;
*height = window_height;
*x = 0;
*y = 0;
int32_t hw = display_height * *width;
int32_t wh = display_width * *height;
// add letterboxes or pillarboxes if the window has a different aspect ratio
// than the current display mode
if (hw > wh) {
int32_t w_max = wh / display_height;
*x += (*width - w_max) / 2;
*width = w_max;
} else if (hw < wh) {
int32_t h_max = hw / display_width;
*y += (*height - h_max) / 2;
*height = h_max;
}
}
static void render_frame(Vulkan::Device &device)
{
RDP::ScanoutOptions opts = {};
opts.persist_frame_on_invalid_input = true;
opts.vi.aa = vk_vi_aa;
opts.vi.scale = vk_vi_scale;
opts.vi.dither_filter = vk_dither_filter;
opts.vi.divot_filter = vk_divot_filter;
opts.vi.gamma_dither = vk_gamma_dither;
opts.blend_previous_frame = vk_interlacing;
opts.upscale_deinterlacing = !vk_interlacing;
opts.downscale_steps = vk_downscaling_steps;
opts.crop_overscan_pixels = vk_overscan;
if (vk_vertical_stretch) {
opts.crop_rect.top = vk_vertical_stretch;
opts.crop_rect.bottom = vk_vertical_stretch;
opts.crop_rect.enable = true;
}
Vulkan::ImageHandle image = processor->scanout(opts);
// Normally reflection is automated.
Vulkan::ResourceLayout vertex_layout = {};
Vulkan::ResourceLayout fragment_layout = {};
fragment_layout.output_mask = 1 << 0;
fragment_layout.sets[0].sampled_image_mask = 1 << 0;
// This request is cached.
auto *program = device.request_program(vertex_spirv, sizeof(vertex_spirv),
fragment_spirv, sizeof(fragment_spirv),
&vertex_layout,
&fragment_layout);
// Blit image on screen.
auto cmd = device.request_command_buffer();
{
auto rp = device.get_swapchain_render_pass(Vulkan::SwapchainRenderPass::ColorOnly);
cmd->begin_render_pass(rp);
if (image.get() != NULL)
{
VkViewport vp = cmd->get_viewport();
calculate_viewport(&vp.x, &vp.y, &vp.width, &vp.height);
cmd->set_program(program);
// Basic default render state.
cmd->set_opaque_state();
cmd->set_depth_test(false, false);
cmd->set_cull_mode(VK_CULL_MODE_NONE);
cmd->set_texture(0, 0, image->get_view(), Vulkan::StockSampler::NearestClamp);
cmd->set_viewport(vp);
// The vertices are constants in the shader.
// Draws fullscreen quad using oversized triangle.
cmd->draw(3);
}
cmd->end_render_pass();
}
device.submit(cmd);
}
void vk_rasterize()
{
processor->set_vi_register(RDP::VIRegister::Control, *GET_GFX_INFO(VI_STATUS_REG));
processor->set_vi_register(RDP::VIRegister::Origin, *GET_GFX_INFO(VI_ORIGIN_REG));
processor->set_vi_register(RDP::VIRegister::Width, *GET_GFX_INFO(VI_WIDTH_REG));
processor->set_vi_register(RDP::VIRegister::Intr, *GET_GFX_INFO(VI_INTR_REG));
processor->set_vi_register(RDP::VIRegister::VCurrentLine, *GET_GFX_INFO(VI_V_CURRENT_LINE_REG));
processor->set_vi_register(RDP::VIRegister::Timing, *GET_GFX_INFO(VI_V_BURST_REG));
processor->set_vi_register(RDP::VIRegister::VSync, *GET_GFX_INFO(VI_V_SYNC_REG));
processor->set_vi_register(RDP::VIRegister::HSync, *GET_GFX_INFO(VI_H_SYNC_REG));
processor->set_vi_register(RDP::VIRegister::Leap, *GET_GFX_INFO(VI_LEAP_REG));
processor->set_vi_register(RDP::VIRegister::HStart, *GET_GFX_INFO(VI_H_START_REG));
processor->set_vi_register(RDP::VIRegister::VStart, *GET_GFX_INFO(VI_V_START_REG));
processor->set_vi_register(RDP::VIRegister::VBurst, *GET_GFX_INFO(VI_V_BURST_REG));
processor->set_vi_register(RDP::VIRegister::XScale, *GET_GFX_INFO(VI_X_SCALE_REG));
processor->set_vi_register(RDP::VIRegister::YScale, *GET_GFX_INFO(VI_Y_SCALE_REG));
RDP::Quirks quirks;
quirks.set_native_texture_lod(vk_native_texture_lod);
quirks.set_native_resolution_tex_rect(vk_native_tex_rect);
processor->set_quirks(quirks);
auto &device = wsi->get_device();
render_frame(device);
(*render_callback)(1);
wsi->end_frame();
wsi->begin_frame();
}
void vk_read_screen(unsigned char* dest)
{
Vulkan::Fence fence;
Vulkan::BufferHandle buffer;
Vulkan::BufferCreateInfo info = {};
Vulkan::ImageView* image = &wsi->get_device().get_swapchain_view();
info.size = window_width * window_height * sizeof(uint32_t);
info.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT;
info.domain = Vulkan::BufferDomain::CachedHost;
if (!buffer || buffer->get_create_info().size < info.size)
buffer = wsi->get_device().create_buffer(info);
auto cmd = wsi->get_device().request_command_buffer();
cmd->copy_image_to_buffer(*buffer, image->get_image(), 0, {}, { window_width, window_height, 1 }, 0, 0, { VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1 });
cmd->barrier(VK_PIPELINE_STAGE_TRANSFER_BIT, VK_ACCESS_TRANSFER_WRITE_BIT,
VK_PIPELINE_STAGE_HOST_BIT, VK_ACCESS_HOST_READ_BIT);
fence.reset();
wsi->get_device().submit(cmd, &fence);
fence->wait();
unsigned char *image_buffer = (unsigned char*)wsi->get_device().map_host_buffer(*buffer, Vulkan::MEMORY_ACCESS_READ_BIT);
image_buffer = image_buffer + info.size;
for (int i = 0; i < window_height; ++i)
{
image_buffer -= window_width * 4;
for (int j = 0; j < window_width; ++j)
{
switch (image->get_format()) {
case VK_FORMAT_B8G8R8A8_UNORM:
dest[0] = image_buffer[2];
dest[1] = image_buffer[1];
dest[2] = image_buffer[0];
break;
case VK_FORMAT_R8G8B8A8_UNORM:
dest[0] = image_buffer[0];
dest[1] = image_buffer[1];
dest[2] = image_buffer[2];
break;
case VK_FORMAT_A8B8G8R8_UNORM_PACK32:
dest[0] = image_buffer[3];
dest[1] = image_buffer[2];
dest[2] = image_buffer[1];
break;
default:
wsi->get_device().unmap_host_buffer(*buffer, Vulkan::MEMORY_ACCESS_READ_BIT);
return;
}
dest += 3;
image_buffer += 4;
}
image_buffer -= window_width * 4;
}
wsi->get_device().unmap_host_buffer(*buffer, Vulkan::MEMORY_ACCESS_READ_BIT);
}
uint32_t viCalculateHorizonalWidth(uint32_t hstart, uint32_t xscale, uint32_t width)
{
if (xscale == 0)
return 320;
uint32_t start = ((hstart & 0x03FF0000) >> 16) & 0x3FF;
uint32_t end = (hstart & 0x3FF);
uint32_t delta;
if (end > start)
delta = end - start;
else
delta = start - end;
uint32_t scale = (xscale & 0xFFF);
if (delta == 0) {
delta = width;
}
return (delta * scale) / 0x400;
}
uint32_t viCalculateVerticalHeight(uint32_t vstart, uint32_t yscale)
{
if (yscale == 0)
return 240;
uint32_t start = ((vstart & 0x03FF0000) >> 16) & 0x3FF;
uint32_t end = (vstart & 0x3FF);
uint32_t delta;
if (end > start)
delta = end - start;
else
delta = start - end;
uint32_t scale = (yscale & 0xFFF);
return (delta * scale) / 0x800;
}
void vk_process_commands()
{
const uint32_t DP_CURRENT = *GET_GFX_INFO(DPC_CURRENT_REG) & 0x00FFFFF8;
const uint32_t DP_END = *GET_GFX_INFO(DPC_END_REG) & 0x00FFFFF8;
int length = DP_END - DP_CURRENT;
if (length <= 0)
return;
length = unsigned(length) >> 3;
if ((cmd_ptr + length) & ~(0x0003FFFF >> 3))
return;
*GET_GFX_INFO(DPC_STATUS_REG) |= DP_STATUS_PIPE_BUSY | DP_STATUS_START_GCLK;
uint32_t offset = DP_CURRENT;
if (*GET_GFX_INFO(DPC_STATUS_REG) & DP_STATUS_XBUS_DMA)
{
do
{
offset &= 0xFF8;
cmd_data[2 * cmd_ptr + 0] = *reinterpret_cast<const uint32_t *>(SP_DMEM + offset);
cmd_data[2 * cmd_ptr + 1] = *reinterpret_cast<const uint32_t *>(SP_DMEM + offset + 4);
offset += sizeof(uint64_t);
cmd_ptr++;
} while (--length > 0);
}
else
{
if (DP_END > 0x7ffffff || DP_CURRENT > 0x7ffffff)
{
return;
}
else
{
do
{
offset &= 0xFFFFF8;
cmd_data[2 * cmd_ptr + 0] = *reinterpret_cast<const uint32_t *>(DRAM + offset);
cmd_data[2 * cmd_ptr + 1] = *reinterpret_cast<const uint32_t *>(DRAM + offset + 4);
offset += sizeof(uint64_t);
cmd_ptr++;
} while (--length > 0);
}
}
while (cmd_cur - cmd_ptr < 0)
{
uint32_t w1 = cmd_data[2 * cmd_cur];
uint32_t command = (w1 >> 24) & 63;
int cmd_length = cmd_len_lut[command];
if (cmd_ptr - cmd_cur - cmd_length < 0)
{
*GET_GFX_INFO(DPC_START_REG) = *GET_GFX_INFO(DPC_CURRENT_REG) = *GET_GFX_INFO(DPC_END_REG);
return;
}
if (command >= 8)
processor->enqueue_command(cmd_length * 2, &cmd_data[2 * cmd_cur]);
if (RDP::Op(command) == RDP::Op::SyncFull)
{
uint32_t width = viCalculateHorizonalWidth(*GET_GFX_INFO(VI_H_START_REG), *GET_GFX_INFO(VI_X_SCALE_REG), *GET_GFX_INFO(VI_WIDTH_REG));
uint32_t height = viCalculateVerticalHeight(*GET_GFX_INFO(VI_V_START_REG), *GET_GFX_INFO(VI_Y_SCALE_REG));
*GET_GFX_INFO(DPC_CLOCK_REG) = width * height * 2;
// For synchronous RDP:
if (vk_synchronous)
processor->signal_timeline();
*gfx.MI_INTR_REG |= DP_INTERRUPT;
*GET_GFX_INFO(DPC_STATUS_REG) &= ~(DP_STATUS_PIPE_BUSY | DP_STATUS_START_GCLK);
gfx.CheckInterrupts();
}
cmd_cur += cmd_length;
}
cmd_ptr = 0;
cmd_cur = 0;
*GET_GFX_INFO(DPC_CURRENT_REG) = *GET_GFX_INFO(DPC_END_REG);
*GET_GFX_INFO(DPC_STATUS_REG) |= DP_STATUS_CBUF_READY;
}
void vk_resize()
{
MupenWSIPlatform* platform = (MupenWSIPlatform*)&wsi->get_platform();
platform->do_resize();
}
void vk_destroy()
{
wsi->end_frame();
processor.reset();
wsi.reset();
wsi_platform.reset();
screen_close();
}
bool vk_init()
{
if (!screen_init())
return false;
/* we have to create a window before we initialize Vulkan */
if (!screen_set_mode(window_fullscreen))
return false;
/* initialize Vulkan loader */
if (!::Vulkan::Context::init_loader(nullptr))
return false;
Vulkan::Context::SystemHandles handles = {};
/* initialize WSI */
wsi.reset(new Vulkan::WSI);
wsi_platform.reset(new MupenWSIPlatform);
wsi->set_platform(wsi_platform.get());
wsi->set_present_mode(window_vsync ? Vulkan::PresentMode::SyncToVBlank : Vulkan::PresentMode::UnlockedMaybeTear);
wsi->set_backbuffer_srgb(false);
if (!wsi->init_simple(1, handles))
return false;
uintptr_t aligned_rdram = reinterpret_cast<uintptr_t>(gfx.RDRAM);
uintptr_t offset = 0;
if (wsi->get_device().get_device_features().supports_external_memory_host)
{
size_t align = wsi->get_device().get_device_features().host_memory_properties.minImportedHostPointerAlignment;
offset = aligned_rdram & (align - 1);
if (offset)
{
return false;
}
aligned_rdram -= offset;
}
RDP::CommandProcessorFlags flags = 0;
switch (vk_rescaling)
{
case 1:
break;
case 2:
flags |= RDP::COMMAND_PROCESSOR_FLAG_UPSCALING_2X_BIT;
break;
case 4:
flags |= RDP::COMMAND_PROCESSOR_FLAG_UPSCALING_4X_BIT;
break;
case 8:
flags |= RDP::COMMAND_PROCESSOR_FLAG_UPSCALING_8X_BIT;
break;
default:
break;
}
if (vk_rescaling > 1 && vk_ssreadbacks)
flags |= RDP::COMMAND_PROCESSOR_FLAG_SUPER_SAMPLED_READ_BACK_BIT;
if (vk_ssdither)
flags |= RDP::COMMAND_PROCESSOR_FLAG_SUPER_SAMPLED_DITHER_BIT;
processor.reset(new RDP::CommandProcessor(wsi->get_device(), reinterpret_cast<void *>(aligned_rdram),
offset, rdram_size, rdram_size / 2, flags));
if (!processor->device_is_supported())
{
processor.reset();
return false;
}
RDP::Quirks quirks;
quirks.set_native_texture_lod(vk_native_texture_lod);
quirks.set_native_resolution_tex_rect(vk_native_tex_rect);
processor->set_quirks(quirks);
wsi->begin_frame();
return true;
}