mirror of
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533 lines
18 KiB
C++
533 lines
18 KiB
C++
#include "host_display.h"
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#include "common/assert.h"
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#include "common/file_system.h"
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#include "common/log.h"
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#include "common/string_util.h"
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#include "common/timer.h"
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#include "stb_image.h"
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#include "stb_image_resize.h"
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#include "stb_image_write.h"
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#include <cerrno>
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#include <cmath>
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#include <cstring>
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#include <thread>
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#include <vector>
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Log_SetChannel(HostDisplay);
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HostDisplayTexture::~HostDisplayTexture() = default;
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HostDisplay::~HostDisplay() = default;
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void HostDisplay::SetDisplayMaxFPS(float max_fps)
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{
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m_display_frame_interval = (max_fps > 0.0f) ? (1.0f / max_fps) : 0.0f;
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}
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bool HostDisplay::ShouldSkipDisplayingFrame()
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{
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if (m_display_frame_interval == 0.0f)
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return false;
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const u64 now = Common::Timer::GetValue();
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const double diff = Common::Timer::ConvertValueToSeconds(now - m_last_frame_displayed_time);
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if (diff < m_display_frame_interval)
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return true;
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m_last_frame_displayed_time = now;
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return false;
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}
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u32 HostDisplay::GetDisplayPixelFormatSize(HostDisplayPixelFormat format)
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{
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switch (format)
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{
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case HostDisplayPixelFormat::RGBA8:
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case HostDisplayPixelFormat::BGRA8:
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return 4;
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case HostDisplayPixelFormat::RGBA5551:
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case HostDisplayPixelFormat::RGB565:
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return 2;
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default:
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return 0;
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}
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}
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bool HostDisplay::SetDisplayPixels(HostDisplayPixelFormat format, u32 width, u32 height, const void* buffer, u32 pitch)
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{
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void* map_ptr;
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u32 map_pitch;
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if (!BeginSetDisplayPixels(format, width, height, &map_ptr, &map_pitch))
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return false;
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if (pitch == map_pitch)
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{
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std::memcpy(map_ptr, buffer, height * map_pitch);
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}
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else
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{
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const u32 copy_size = width * GetDisplayPixelFormatSize(format);
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DebugAssert(pitch >= copy_size && map_pitch >= copy_size);
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const u8* src_ptr = static_cast<const u8*>(buffer);
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u8* dst_ptr = static_cast<u8*>(map_ptr);
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for (u32 i = 0; i < height; i++)
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{
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std::memcpy(dst_ptr, src_ptr, copy_size);
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src_ptr += pitch;
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dst_ptr += map_pitch;
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}
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}
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EndSetDisplayPixels();
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return true;
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}
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void HostDisplay::SetSoftwareCursor(std::unique_ptr<HostDisplayTexture> texture, float scale /*= 1.0f*/)
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{
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m_cursor_texture = std::move(texture);
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m_cursor_texture_scale = scale;
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}
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bool HostDisplay::SetSoftwareCursor(const void* pixels, u32 width, u32 height, u32 stride, float scale /*= 1.0f*/)
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{
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std::unique_ptr<HostDisplayTexture> tex = CreateTexture(width, height, pixels, stride, false);
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if (!tex)
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return false;
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SetSoftwareCursor(std::move(tex), scale);
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return true;
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}
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bool HostDisplay::SetSoftwareCursor(const char* path, float scale /*= 1.0f*/)
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{
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auto fp = FileSystem::OpenManagedCFile(path, "rb");
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if (!fp)
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{
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return false;
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}
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int width, height, file_channels;
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u8* pixel_data = stbi_load_from_file(fp.get(), &width, &height, &file_channels, 4);
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if (!pixel_data)
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{
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const char* error_reason = stbi_failure_reason();
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Log_ErrorPrintf("Failed to load image from '%s': %s", path, error_reason ? error_reason : "unknown error");
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return false;
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}
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std::unique_ptr<HostDisplayTexture> tex = CreateTexture(static_cast<u32>(width), static_cast<u32>(height), pixel_data,
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sizeof(u32) * static_cast<u32>(width), false);
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stbi_image_free(pixel_data);
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if (!tex)
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return false;
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Log_InfoPrintf("Loaded %dx%d image from '%s' for software cursor", width, height, path);
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SetSoftwareCursor(std::move(tex), scale);
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return true;
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}
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void HostDisplay::ClearSoftwareCursor()
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{
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m_cursor_texture.reset();
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m_cursor_texture_scale = 1.0f;
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}
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void HostDisplay::CalculateDrawRect(s32 window_width, s32 window_height, s32* out_left, s32* out_top, s32* out_width,
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s32* out_height, s32* out_left_padding, s32* out_top_padding, float* out_scale,
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float* out_y_scale, bool apply_aspect_ratio) const
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{
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apply_aspect_ratio = (m_display_aspect_ratio > 0) ? apply_aspect_ratio : false;
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const float y_scale =
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apply_aspect_ratio ?
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((static_cast<float>(m_display_width) / static_cast<float>(m_display_height)) / m_display_aspect_ratio) :
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1.0f;
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const float display_width = static_cast<float>(m_display_width);
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const float display_height = static_cast<float>(m_display_height) * y_scale;
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const float active_left = static_cast<float>(m_display_active_left);
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const float active_top = static_cast<float>(m_display_active_top) * y_scale;
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const float active_width = static_cast<float>(m_display_active_width);
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const float active_height = static_cast<float>(m_display_active_height) * y_scale;
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if (out_y_scale)
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*out_y_scale = y_scale;
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// now fit it within the window
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const float window_ratio = static_cast<float>(window_width) / static_cast<float>(window_height);
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float scale;
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if ((display_width / display_height) >= window_ratio)
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{
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// align in middle vertically
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scale = static_cast<float>(window_width) / display_width;
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if (m_display_integer_scaling)
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scale = std::max(std::floor(scale), 1.0f);
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if (out_left_padding)
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{
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if (m_display_integer_scaling)
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*out_left_padding = std::max<s32>((window_width - static_cast<s32>(display_width * scale)) / 2, 0);
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else
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*out_left_padding = 0;
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}
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if (out_top_padding)
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{
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switch (m_display_alignment)
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{
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case Alignment::LeftOrTop:
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*out_top_padding = 0;
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break;
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case Alignment::Center:
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*out_top_padding = std::max<s32>((window_height - static_cast<s32>(display_height * scale)) / 2, 0);
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break;
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case Alignment::RightOrBottom:
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*out_top_padding = std::max<s32>(window_height - static_cast<s32>(display_height * scale), 0);
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break;
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}
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}
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}
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else
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{
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// align in middle horizontally
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scale = static_cast<float>(window_height) / display_height;
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if (m_display_integer_scaling)
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scale = std::max(std::floor(scale), 1.0f);
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if (out_left_padding)
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{
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switch (m_display_alignment)
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{
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case Alignment::LeftOrTop:
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*out_left_padding = 0;
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break;
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case Alignment::Center:
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*out_left_padding = std::max<s32>((window_width - static_cast<s32>(display_width * scale)) / 2, 0);
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break;
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case Alignment::RightOrBottom:
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*out_left_padding = std::max<s32>(window_width - static_cast<s32>(display_width * scale), 0);
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break;
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}
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}
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if (out_top_padding)
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{
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if (m_display_integer_scaling)
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*out_top_padding = std::max<s32>((window_height - static_cast<s32>(display_height * scale)) / 2, 0);
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else
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*out_top_padding = 0;
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}
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}
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*out_width = static_cast<s32>(active_width * scale);
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*out_height = static_cast<s32>(active_height * scale);
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*out_left = static_cast<s32>(active_left * scale);
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*out_top = static_cast<s32>(active_top * scale);
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if (out_scale)
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*out_scale = scale;
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}
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std::tuple<s32, s32, s32, s32> HostDisplay::CalculateDrawRect(s32 window_width, s32 window_height, s32 top_margin,
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bool apply_aspect_ratio /* = true */) const
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{
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s32 left, top, width, height, left_padding, top_padding;
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CalculateDrawRect(window_width, window_height - top_margin, &left, &top, &width, &height, &left_padding, &top_padding,
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nullptr, nullptr, apply_aspect_ratio);
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return std::make_tuple(left + left_padding, top + top_padding + top_margin, width, height);
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}
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std::tuple<s32, s32, s32, s32> HostDisplay::CalculateSoftwareCursorDrawRect() const
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{
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return CalculateSoftwareCursorDrawRect(m_mouse_position_x, m_mouse_position_y);
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}
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std::tuple<s32, s32, s32, s32> HostDisplay::CalculateSoftwareCursorDrawRect(s32 cursor_x, s32 cursor_y) const
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{
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const float scale = m_window_info.surface_scale * m_cursor_texture_scale;
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const u32 cursor_extents_x = static_cast<u32>(static_cast<float>(m_cursor_texture->GetWidth()) * scale * 0.5f);
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const u32 cursor_extents_y = static_cast<u32>(static_cast<float>(m_cursor_texture->GetHeight()) * scale * 0.5f);
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const s32 out_left = cursor_x - cursor_extents_x;
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const s32 out_top = cursor_y - cursor_extents_y;
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const s32 out_width = cursor_extents_x * 2u;
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const s32 out_height = cursor_extents_y * 2u;
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return std::tie(out_left, out_top, out_width, out_height);
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}
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std::tuple<s32, s32> HostDisplay::ConvertWindowCoordinatesToDisplayCoordinates(s32 window_x, s32 window_y,
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s32 window_width, s32 window_height,
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s32 top_margin) const
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{
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s32 left, top, width, height, left_padding, top_padding;
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float scale, y_scale;
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CalculateDrawRect(window_width, window_height - top_margin, &left, &top, &width, &height, &left_padding, &top_padding,
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&scale, &y_scale);
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// convert coordinates to active display region, then to full display region
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const float scaled_display_x = static_cast<float>(window_x - (left_padding));
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const float scaled_display_y = static_cast<float>(window_y - (top_padding + top_margin));
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// scale back to internal resolution
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const float display_x = scaled_display_x / scale;
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const float display_y = scaled_display_y / scale / y_scale;
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return std::make_tuple(static_cast<s32>(display_x), static_cast<s32>(display_y));
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}
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static bool CompressAndWriteTextureToFile(u32 width, u32 height, std::string filename, FileSystem::ManagedCFilePtr fp,
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bool clear_alpha, bool flip_y, u32 resize_width, u32 resize_height,
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std::vector<u32> texture_data, u32 texture_data_stride)
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{
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const char* extension = std::strrchr(filename.c_str(), '.');
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if (!extension)
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{
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Log_ErrorPrintf("Unable to determine file extension for '%s'", filename.c_str());
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return false;
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}
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if (clear_alpha)
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{
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for (u32& pixel : texture_data)
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pixel |= 0xFF000000;
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}
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if (flip_y)
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{
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std::vector<u32> temp(width);
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for (u32 flip_row = 0; flip_row < (height / 2); flip_row++)
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{
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u32* top_ptr = &texture_data[flip_row * width];
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u32* bottom_ptr = &texture_data[((height - 1) - flip_row) * width];
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std::memcpy(temp.data(), top_ptr, texture_data_stride);
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std::memcpy(top_ptr, bottom_ptr, texture_data_stride);
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std::memcpy(bottom_ptr, temp.data(), texture_data_stride);
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}
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}
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if (resize_width > 0 && resize_height > 0 && (resize_width != width || resize_height != height))
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{
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std::vector<u32> resized_texture_data(resize_width * resize_height);
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u32 resized_texture_stride = sizeof(u32) * resize_width;
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if (!stbir_resize_uint8(reinterpret_cast<u8*>(texture_data.data()), width, height, texture_data_stride,
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reinterpret_cast<u8*>(resized_texture_data.data()), resize_width, resize_height,
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resized_texture_stride, 4))
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{
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Log_ErrorPrintf("Failed to resize texture data from %ux%u to %ux%u", width, height, resize_width, resize_height);
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return false;
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}
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width = resize_width;
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height = resize_height;
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texture_data = std::move(resized_texture_data);
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texture_data_stride = resized_texture_stride;
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}
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const auto write_func = [](void* context, void* data, int size) {
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std::fwrite(data, 1, size, static_cast<std::FILE*>(context));
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};
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bool result = false;
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if (StringUtil::Strcasecmp(extension, ".png") == 0)
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{
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result =
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(stbi_write_png_to_func(write_func, fp.get(), width, height, 4, texture_data.data(), texture_data_stride) != 0);
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}
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else if (StringUtil::Strcasecmp(filename.c_str(), ".jpg") == 0)
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{
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result = (stbi_write_jpg_to_func(write_func, fp.get(), width, height, 4, texture_data.data(), 95) != 0);
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}
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else if (StringUtil::Strcasecmp(filename.c_str(), ".tga") == 0)
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{
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result = (stbi_write_tga_to_func(write_func, fp.get(), width, height, 4, texture_data.data()) != 0);
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}
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else if (StringUtil::Strcasecmp(filename.c_str(), ".bmp") == 0)
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{
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result = (stbi_write_bmp_to_func(write_func, fp.get(), width, height, 4, texture_data.data()) != 0);
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}
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if (!result)
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{
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Log_ErrorPrintf("Unknown extension in filename '%s' or save error: '%s'", filename.c_str(), extension);
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return false;
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}
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return true;
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}
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bool HostDisplay::WriteTextureToFile(const void* texture_handle, u32 x, u32 y, u32 width, u32 height,
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std::string filename, bool clear_alpha /* = true */, bool flip_y /* = false */,
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u32 resize_width /* = 0 */, u32 resize_height /* = 0 */,
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bool compress_on_thread /* = false */)
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{
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std::vector<u32> texture_data(width * height);
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u32 texture_data_stride = sizeof(u32) * width;
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if (!DownloadTexture(texture_handle, x, y, width, height, texture_data.data(), texture_data_stride))
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{
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Log_ErrorPrintf("Texture download failed");
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return false;
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}
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auto fp = FileSystem::OpenManagedCFile(filename.c_str(), "wb");
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if (!fp)
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{
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Log_ErrorPrintf("Can't open file '%s': errno %d", filename.c_str(), errno);
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return false;
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}
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if (!compress_on_thread)
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{
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return CompressAndWriteTextureToFile(width, height, std::move(filename), std::move(fp), clear_alpha, flip_y,
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resize_width, resize_height, std::move(texture_data), texture_data_stride);
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}
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std::thread compress_thread(CompressAndWriteTextureToFile, width, height, std::move(filename), std::move(fp),
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clear_alpha, flip_y, resize_width, resize_height, std::move(texture_data),
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texture_data_stride);
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compress_thread.detach();
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return true;
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}
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bool HostDisplay::WriteDisplayTextureToFile(std::string filename, bool full_resolution /* = true */,
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bool apply_aspect_ratio /* = true */, bool compress_on_thread /* = false */)
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{
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if (!m_display_texture_handle || m_display_texture_format != HostDisplayPixelFormat::RGBA8)
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return false;
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apply_aspect_ratio = (m_display_aspect_ratio > 0) ? apply_aspect_ratio : false;
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s32 resize_width = 0;
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s32 resize_height = 0;
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if (apply_aspect_ratio && full_resolution)
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{
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if (m_display_aspect_ratio > 1.0f)
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{
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resize_width = m_display_texture_view_width;
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resize_height = static_cast<s32>(static_cast<float>(resize_width) / m_display_aspect_ratio);
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}
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else
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{
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resize_height = std::abs(m_display_texture_view_height);
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resize_width = static_cast<s32>(static_cast<float>(resize_height) * m_display_aspect_ratio);
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}
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}
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else if (apply_aspect_ratio)
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{
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const auto [left, top, right, bottom] =
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CalculateDrawRect(GetWindowWidth(), GetWindowHeight(), m_display_top_margin);
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resize_width = right - left;
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resize_height = bottom - top;
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}
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else if (!full_resolution)
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{
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const auto [left, top, right, bottom] =
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CalculateDrawRect(GetWindowWidth(), GetWindowHeight(), m_display_top_margin);
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const float ratio =
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static_cast<float>(m_display_texture_view_width) / static_cast<float>(std::abs(m_display_texture_view_height));
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if (ratio > 1.0f)
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{
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resize_width = right - left;
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resize_height = static_cast<s32>(static_cast<float>(resize_width) / ratio);
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}
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else
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{
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resize_height = bottom - top;
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resize_width = static_cast<s32>(static_cast<float>(resize_height) * ratio);
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}
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}
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if (resize_width < 0)
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resize_width = 1;
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if (resize_height < 0)
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resize_height = 1;
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const bool flip_y = (m_display_texture_view_height < 0);
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s32 read_height = m_display_texture_view_height;
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s32 read_y = m_display_texture_view_y;
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if (flip_y)
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{
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read_height = -m_display_texture_view_height;
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read_y = (m_display_texture_height - read_height) - (m_display_texture_height - m_display_texture_view_y);
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}
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return WriteTextureToFile(m_display_texture_handle, m_display_texture_view_x, read_y, m_display_texture_view_width,
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read_height, std::move(filename), true, flip_y, static_cast<u32>(resize_width),
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static_cast<u32>(resize_height), compress_on_thread);
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|
}
|
|
|
|
bool HostDisplay::WriteDisplayTextureToBuffer(std::vector<u32>* buffer, u32 resize_width /* = 0 */,
|
|
u32 resize_height /* = 0 */, bool clear_alpha /* = true */)
|
|
{
|
|
if (!m_display_texture_handle || m_display_texture_format != HostDisplayPixelFormat::RGBA8)
|
|
return false;
|
|
|
|
const bool flip_y = (m_display_texture_view_height < 0);
|
|
s32 read_width = m_display_texture_view_width;
|
|
s32 read_height = m_display_texture_view_height;
|
|
s32 read_x = m_display_texture_view_x;
|
|
s32 read_y = m_display_texture_view_y;
|
|
if (flip_y)
|
|
{
|
|
read_height = -m_display_texture_view_height;
|
|
read_y = (m_display_texture_height - read_height) - (m_display_texture_height - m_display_texture_view_y);
|
|
}
|
|
|
|
u32 width = static_cast<u32>(read_width);
|
|
u32 height = static_cast<u32>(read_height);
|
|
std::vector<u32> texture_data(width * height);
|
|
u32 texture_data_stride = sizeof(u32) * width;
|
|
if (!DownloadTexture(m_display_texture_handle, read_x, read_y, width, height, texture_data.data(),
|
|
texture_data_stride))
|
|
{
|
|
Log_ErrorPrintf("Failed to download texture from GPU.");
|
|
return false;
|
|
}
|
|
|
|
if (clear_alpha)
|
|
{
|
|
for (u32& pixel : texture_data)
|
|
pixel |= 0xFF000000;
|
|
}
|
|
|
|
if (flip_y)
|
|
{
|
|
std::vector<u32> temp(width);
|
|
for (u32 flip_row = 0; flip_row < (height / 2); flip_row++)
|
|
{
|
|
u32* top_ptr = &texture_data[flip_row * width];
|
|
u32* bottom_ptr = &texture_data[((height - 1) - flip_row) * width];
|
|
std::memcpy(temp.data(), top_ptr, texture_data_stride);
|
|
std::memcpy(top_ptr, bottom_ptr, texture_data_stride);
|
|
std::memcpy(bottom_ptr, temp.data(), texture_data_stride);
|
|
}
|
|
}
|
|
|
|
if (resize_width > 0 && resize_height > 0 && (resize_width != width || resize_height != height))
|
|
{
|
|
std::vector<u32> resized_texture_data(resize_width * resize_height);
|
|
u32 resized_texture_stride = sizeof(u32) * resize_width;
|
|
if (!stbir_resize_uint8(reinterpret_cast<u8*>(texture_data.data()), width, height, texture_data_stride,
|
|
reinterpret_cast<u8*>(resized_texture_data.data()), resize_width, resize_height,
|
|
resized_texture_stride, 4))
|
|
{
|
|
Log_ErrorPrintf("Failed to resize texture data from %ux%u to %ux%u", width, height, resize_width, resize_height);
|
|
return false;
|
|
}
|
|
|
|
width = resize_width;
|
|
height = resize_height;
|
|
*buffer = std::move(resized_texture_data);
|
|
texture_data_stride = resized_texture_stride;
|
|
}
|
|
else
|
|
{
|
|
*buffer = texture_data;
|
|
}
|
|
|
|
return true;
|
|
}
|