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@ -698,7 +698,10 @@ void Image::UploadMemory(const ImageBufferMap& map,
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void Image::DownloadMemory(ImageBufferMap& map,
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std::span<const VideoCommon::BufferImageCopy> copies) {
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glMemoryBarrier(GL_PIXEL_BUFFER_BARRIER_BIT); // TODO: Move this to its own API
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const bool is_rescaled = True(flags & ImageFlagBits::Rescaled);
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if (is_rescaled) {
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ScaleDown();
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}
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glBindBuffer(GL_PIXEL_PACK_BUFFER, map.buffer);
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glPixelStorei(GL_PACK_ALIGNMENT, 1);
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@ -716,6 +719,9 @@ void Image::DownloadMemory(ImageBufferMap& map,
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}
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CopyImageToBuffer(copy, map.offset);
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}
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if (is_rescaled) {
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ScaleUp();
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}
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}
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GLuint Image::StorageHandle() noexcept {
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@ -849,12 +855,70 @@ void Image::CopyImageToBuffer(const VideoCommon::BufferImageCopy& copy, size_t b
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}
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}
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void Image::Scale() {
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// TODO: Pass scaling factor?
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if (gl_format == 0 || gl_type == 0) {
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// compressed textures
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return;
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}
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if (info.type == ImageType::Linear) {
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UNIMPLEMENTED();
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return;
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}
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GLint prev_draw_fbo;
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GLint prev_read_fbo;
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glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &prev_draw_fbo);
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glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &prev_read_fbo);
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const GLenum attachment = [this] {
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switch (GetFormatType(info.format)) {
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case SurfaceType::ColorTexture:
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return GL_COLOR_ATTACHMENT0;
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case SurfaceType::Depth:
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return GL_DEPTH_ATTACHMENT;
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case SurfaceType::DepthStencil:
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return GL_DEPTH_STENCIL_ATTACHMENT;
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default:
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UNREACHABLE();
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return GL_COLOR_ATTACHMENT0;
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}
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}();
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const GLenum mask = [this] {
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switch (GetFormatType(info.format)) {
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case SurfaceType::ColorTexture:
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return GL_COLOR_BUFFER_BIT;
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case SurfaceType::Depth:
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return GL_DEPTH_BUFFER_BIT;
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case SurfaceType::DepthStencil:
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return GL_STENCIL_BUFFER_BIT | GL_DEPTH_BUFFER_BIT;
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default:
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UNREACHABLE();
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return GL_COLOR_BUFFER_BIT;
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}
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}();
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const GLenum filter = (mask & GL_COLOR_BUFFER_BIT) != 0 ? GL_LINEAR : GL_NEAREST;
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GLuint fbo_handle;
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glGenFramebuffers(1, &fbo_handle);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_handle);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo_handle);
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glNamedFramebufferTexture(fbo_handle, attachment, texture.handle, 0);
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const size_t scaled_width = info.size.width;
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const size_t scaled_height = info.size.height * 2;
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glBlitNamedFramebuffer(fbo_handle, fbo_handle, 0, 0, info.size.width, info.size.height, 0, 0,
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scaled_width, scaled_height, mask, filter);
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// TODO: resize texture?
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glCopyTextureSubImage3D(texture.handle, 0, 0, 0, 0, 0, 0, scaled_width, scaled_height / 2);
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// Restore previous framebuffers
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, prev_draw_fbo);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, prev_read_fbo);
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}
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bool Image::ScaleUp() {
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if (True(flags & ImageFlagBits::Rescaled)) {
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return false;
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}
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flags |= ImageFlagBits::Rescaled;
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UNIMPLEMENTED();
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Scale();
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return true;
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}
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@ -863,7 +927,7 @@ bool Image::ScaleDown() {
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return false;
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}
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flags &= ~ImageFlagBits::Rescaled;
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UNIMPLEMENTED();
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Scale();
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return true;
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}
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