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HostDisplay: Support screenshotting 16-bit display formats

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This commit is contained in:
Connor McLaughlin
2020-12-18 01:59:32 +10:00
parent 189656cbc4
commit ca84925ff8
10 changed files with 196 additions and 76 deletions
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99
src/frontend-common/opengl_host_display.cpp
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@ -83,46 +83,6 @@ std::unique_ptr<HostDisplayTexture> OpenGLHostDisplay::CreateTexture(u32 width,
return OpenGLHostDisplayTexture::Create(width, height, initial_data, initial_data_stride);
}
void OpenGLHostDisplay::UpdateTexture(HostDisplayTexture* texture, u32 x, u32 y, u32 width, u32 height,
const void* texture_data, u32 texture_data_stride)
{
OpenGLHostDisplayTexture* tex = static_cast<OpenGLHostDisplayTexture*>(texture);
Assert((texture_data_stride % sizeof(u32)) == 0);
GLint old_texture_binding = 0, old_alignment = 0, old_row_length = 0;
glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_texture_binding);
glGetIntegerv(GL_UNPACK_ALIGNMENT, &old_alignment);
glGetIntegerv(GL_UNPACK_ROW_LENGTH, &old_row_length);
glBindTexture(GL_TEXTURE_2D, tex->GetGLID());
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glPixelStorei(GL_UNPACK_ROW_LENGTH, texture_data_stride / sizeof(u32));
glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, texture_data);
glPixelStorei(GL_UNPACK_ALIGNMENT, old_alignment);
glPixelStorei(GL_UNPACK_ROW_LENGTH, old_row_length);
glBindTexture(GL_TEXTURE_2D, old_texture_binding);
}
bool OpenGLHostDisplay::DownloadTexture(const void* texture_handle, u32 x, u32 y, u32 width, u32 height, void* out_data,
u32 out_data_stride)
{
GLint old_alignment = 0, old_row_length = 0;
glGetIntegerv(GL_PACK_ALIGNMENT, &old_alignment);
glGetIntegerv(GL_PACK_ROW_LENGTH, &old_row_length);
glPixelStorei(GL_PACK_ALIGNMENT, sizeof(u32));
glPixelStorei(GL_PACK_ROW_LENGTH, out_data_stride / sizeof(u32));
const GLuint texture = static_cast<GLuint>(reinterpret_cast<uintptr_t>(texture_handle));
GL::Texture::GetTextureSubImage(texture, 0, x, y, 0, width, height, 1, GL_RGBA, GL_UNSIGNED_BYTE,
height * out_data_stride, out_data);
glPixelStorei(GL_PACK_ALIGNMENT, old_alignment);
glPixelStorei(GL_PACK_ROW_LENGTH, old_row_length);
return true;
}
static constexpr std::array<std::tuple<GLenum, GLenum, GLenum>, static_cast<u32>(HostDisplayPixelFormat::Count)>
s_display_pixel_format_mapping = {{
{}, // Unknown
@ -132,6 +92,65 @@ static constexpr std::array<std::tuple<GLenum, GLenum, GLenum>, static_cast<u32>
{GL_RGB5_A1, GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV} // RGBA5551
}};
void OpenGLHostDisplay::UpdateTexture(HostDisplayTexture* texture, u32 x, u32 y, u32 width, u32 height,
const void* texture_data, u32 texture_data_stride)
{
OpenGLHostDisplayTexture* tex = static_cast<OpenGLHostDisplayTexture*>(texture);
const auto [gl_internal_format, gl_format, gl_type] =
s_display_pixel_format_mapping[static_cast<u32>(texture->GetFormat())];
GLint alignment;
if (texture_data_stride & 1)
alignment = 1;
else if (texture_data_stride & 2)
alignment = 2;
else
alignment = 4;
GLint old_texture_binding = 0, old_alignment = 0, old_row_length = 0;
glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_texture_binding);
glGetIntegerv(GL_UNPACK_ALIGNMENT, &old_alignment);
glGetIntegerv(GL_UNPACK_ROW_LENGTH, &old_row_length);
glBindTexture(GL_TEXTURE_2D, tex->GetGLID());
glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
glPixelStorei(GL_UNPACK_ROW_LENGTH, texture_data_stride / GetDisplayPixelFormatSize(texture->GetFormat()));
glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height, gl_format, gl_type, texture_data);
glPixelStorei(GL_UNPACK_ALIGNMENT, old_alignment);
glPixelStorei(GL_UNPACK_ROW_LENGTH, old_row_length);
glBindTexture(GL_TEXTURE_2D, old_texture_binding);
}
bool OpenGLHostDisplay::DownloadTexture(const void* texture_handle, HostDisplayPixelFormat texture_format, u32 x, u32 y,
u32 width, u32 height, void* out_data, u32 out_data_stride)
{
GLint alignment;
if (out_data_stride & 1)
alignment = 1;
else if (out_data_stride & 2)
alignment = 2;
else
alignment = 4;
GLint old_alignment = 0, old_row_length = 0;
glGetIntegerv(GL_PACK_ALIGNMENT, &old_alignment);
glGetIntegerv(GL_PACK_ROW_LENGTH, &old_row_length);
glPixelStorei(GL_PACK_ALIGNMENT, alignment);
glPixelStorei(GL_PACK_ROW_LENGTH, out_data_stride / GetDisplayPixelFormatSize(texture_format));
const GLuint texture = static_cast<GLuint>(reinterpret_cast<uintptr_t>(texture_handle));
const auto [gl_internal_format, gl_format, gl_type] =
s_display_pixel_format_mapping[static_cast<u32>(texture_format)];
GL::Texture::GetTextureSubImage(texture, 0, x, y, 0, width, height, 1, gl_format, gl_type, height * out_data_stride,
out_data);
glPixelStorei(GL_PACK_ALIGNMENT, old_alignment);
glPixelStorei(GL_PACK_ROW_LENGTH, old_row_length);
return true;
}
bool OpenGLHostDisplay::SupportsDisplayPixelFormat(HostDisplayPixelFormat format) const
{
return (std::get<0>(s_display_pixel_format_mapping[static_cast<u32>(format)]) != static_cast<GLenum>(0));