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gl_texture_cache: WIP texture rescale

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ameerj 2021-07-18 23:59:31 -04:00 committed by Fernando Sahmkow
parent ba18047e8d
commit 10e5065a5c
2 changed files with 69 additions and 3 deletions
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70
src/video_core/renderer_opengl/gl_texture_cache.cpp
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@ -698,7 +698,10 @@ void Image::UploadMemory(const ImageBufferMap& map,
void Image::DownloadMemory(ImageBufferMap& map,
std::span<const VideoCommon::BufferImageCopy> copies) {
glMemoryBarrier(GL_PIXEL_BUFFER_BARRIER_BIT); // TODO: Move this to its own API
const bool is_rescaled = True(flags & ImageFlagBits::Rescaled);
if (is_rescaled) {
ScaleDown();
}
glBindBuffer(GL_PIXEL_PACK_BUFFER, map.buffer);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
@ -716,6 +719,9 @@ void Image::DownloadMemory(ImageBufferMap& map,
}
CopyImageToBuffer(copy, map.offset);
}
if (is_rescaled) {
ScaleUp();
}
}
GLuint Image::StorageHandle() noexcept {
@ -849,12 +855,70 @@ void Image::CopyImageToBuffer(const VideoCommon::BufferImageCopy& copy, size_t b
}
}
void Image::Scale() {
// TODO: Pass scaling factor?
if (gl_format == 0 || gl_type == 0) {
// compressed textures
return;
}
if (info.type == ImageType::Linear) {
UNIMPLEMENTED();
return;
}
GLint prev_draw_fbo;
GLint prev_read_fbo;
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &prev_draw_fbo);
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &prev_read_fbo);
const GLenum attachment = [this] {
switch (GetFormatType(info.format)) {
case SurfaceType::ColorTexture:
return GL_COLOR_ATTACHMENT0;
case SurfaceType::Depth:
return GL_DEPTH_ATTACHMENT;
case SurfaceType::DepthStencil:
return GL_DEPTH_STENCIL_ATTACHMENT;
default:
UNREACHABLE();
return GL_COLOR_ATTACHMENT0;
}
}();
const GLenum mask = [this] {
switch (GetFormatType(info.format)) {
case SurfaceType::ColorTexture:
return GL_COLOR_BUFFER_BIT;
case SurfaceType::Depth:
return GL_DEPTH_BUFFER_BIT;
case SurfaceType::DepthStencil:
return GL_STENCIL_BUFFER_BIT | GL_DEPTH_BUFFER_BIT;
default:
UNREACHABLE();
return GL_COLOR_BUFFER_BIT;
}
}();
const GLenum filter = (mask & GL_COLOR_BUFFER_BIT) != 0 ? GL_LINEAR : GL_NEAREST;
GLuint fbo_handle;
glGenFramebuffers(1, &fbo_handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_handle);
glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo_handle);
glNamedFramebufferTexture(fbo_handle, attachment, texture.handle, 0);
const size_t scaled_width = info.size.width;
const size_t scaled_height = info.size.height * 2;
glBlitNamedFramebuffer(fbo_handle, fbo_handle, 0, 0, info.size.width, info.size.height, 0, 0,
scaled_width, scaled_height, mask, filter);
// TODO: resize texture?
glCopyTextureSubImage3D(texture.handle, 0, 0, 0, 0, 0, 0, scaled_width, scaled_height / 2);
// Restore previous framebuffers
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, prev_draw_fbo);
glBindFramebuffer(GL_READ_FRAMEBUFFER, prev_read_fbo);
}
bool Image::ScaleUp() {
if (True(flags & ImageFlagBits::Rescaled)) {
return false;
}
flags |= ImageFlagBits::Rescaled;
UNIMPLEMENTED();
Scale();
return true;
}
@ -863,7 +927,7 @@ bool Image::ScaleDown() {
return false;
}
flags &= ~ImageFlagBits::Rescaled;
UNIMPLEMENTED();
Scale();
return true;
}

2
src/video_core/renderer_opengl/gl_texture_cache.h
View file

@ -198,6 +198,8 @@ private:
void CopyImageToBuffer(const VideoCommon::BufferImageCopy& copy, size_t buffer_offset);
void Scale();
OGLTexture texture;
OGLTextureView store_view;
GLenum gl_internal_format = GL_NONE;