mirror of
https://github.com/Xaymar/obs-StreamFX
synced 2024-12-29 11:01:23 +00:00
336 lines
11 KiB
C++
336 lines
11 KiB
C++
// AUTOGENERATED COPYRIGHT HEADER START
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// Copyright (C) 2022-2023 Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
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// AUTOGENERATED COPYRIGHT HEADER END
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#include "gfx-mipmapper.hpp"
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#include "obs/gs/gs-helper.hpp"
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#include "plugin.hpp"
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#include "warning-disable.hpp"
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#include <sstream>
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#include <stdexcept>
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// Direct3D 11
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#ifdef _WIN32
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#include <Windows.h>
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#include <atlutil.h>
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#include <d3d11.h>
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#include <dxgi.h>
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#endif
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// OpenGL
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#include "glad/gl.h"
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#include "warning-enable.hpp"
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#ifdef _WIN32
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struct d3d_info {
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ID3D11Device* device = nullptr;
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ID3D11DeviceContext* context = nullptr;
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ID3D11Resource* target = nullptr;
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};
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void d3d_initialize(d3d_info& info, std::shared_ptr<streamfx::obs::gs::texture> source,
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std::shared_ptr<streamfx::obs::gs::texture> target)
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{
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info.target = reinterpret_cast<ID3D11Resource*>(gs_texture_get_obj(target->get_object()));
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info.device = reinterpret_cast<ID3D11Device*>(gs_get_device_obj());
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info.device->GetImmediateContext(&info.context);
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}
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void d3d_copy_subregion(d3d_info& info, std::shared_ptr<streamfx::obs::gs::texture> source, uint32_t mip_level,
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uint32_t width, uint32_t height)
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{
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D3D11_BOX box = {0, 0, 0, width, height, 1};
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auto source_ref = reinterpret_cast<ID3D11Resource*>(gs_texture_get_obj(source->get_object()));
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info.context->CopySubresourceRegion(info.target, mip_level, 0, 0, 0, source_ref, 0, &box);
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}
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#endif
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struct opengl_info {
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GLuint target = 0;
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GLuint fbo = 0;
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};
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std::string opengl_translate_error(GLenum error)
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{
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#define TRANSLATE_CASE(X) \
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case X: \
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return #X;
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switch (error) {
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TRANSLATE_CASE(GL_NO_ERROR);
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TRANSLATE_CASE(GL_INVALID_ENUM);
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TRANSLATE_CASE(GL_INVALID_VALUE);
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TRANSLATE_CASE(GL_INVALID_OPERATION);
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TRANSLATE_CASE(GL_STACK_OVERFLOW);
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TRANSLATE_CASE(GL_STACK_UNDERFLOW);
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TRANSLATE_CASE(GL_OUT_OF_MEMORY);
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TRANSLATE_CASE(GL_INVALID_FRAMEBUFFER_OPERATION);
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}
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return std::to_string(error);
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#undef TRANSLATE_CASE
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}
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std::string opengl_translate_framebuffer_status(GLenum error)
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{
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#define TRANSLATE_CASE(X) \
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case X: \
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return #X;
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switch (error) {
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TRANSLATE_CASE(GL_FRAMEBUFFER_COMPLETE);
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TRANSLATE_CASE(GL_FRAMEBUFFER_UNDEFINED);
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TRANSLATE_CASE(GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT);
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TRANSLATE_CASE(GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);
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TRANSLATE_CASE(GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER);
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TRANSLATE_CASE(GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER);
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TRANSLATE_CASE(GL_FRAMEBUFFER_UNSUPPORTED);
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TRANSLATE_CASE(GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE);
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TRANSLATE_CASE(GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS);
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}
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return std::to_string(error);
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#undef TRANSLATE_CASE
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}
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#define D_OPENGL_CHECK_ERROR(FUNCTION) \
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if (auto err = glGetError(); err != GL_NO_ERROR) { \
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std::stringstream sstr; \
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sstr << opengl_translate_error(err) << " = " << FUNCTION; \
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throw std::runtime_error(sstr.str()); \
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}
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#define D_OPENGL_CHECK_FRAMEBUFFERSTATUS(BUFFER, FUNCTION) \
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if (auto err = glCheckFramebufferStatus(BUFFER); err != GL_FRAMEBUFFER_COMPLETE) { \
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std::stringstream sstr; \
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sstr << opengl_translate_framebuffer_status(err) << " = " << FUNCTION; \
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throw std::runtime_error(sstr.str()); \
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}
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void opengl_initialize(opengl_info& info, std::shared_ptr<streamfx::obs::gs::texture> source,
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std::shared_ptr<streamfx::obs::gs::texture> target)
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{
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info.target = *reinterpret_cast<GLuint*>(gs_texture_get_obj(target->get_object()));
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glGenFramebuffers(1, &info.fbo);
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}
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void opengl_finalize(opengl_info& info)
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{
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glDeleteFramebuffers(1, &info.fbo);
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}
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void opengl_copy_subregion(opengl_info& info, std::shared_ptr<streamfx::obs::gs::texture> source, uint32_t mip_level,
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uint32_t width, uint32_t height)
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{
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GLuint source_ref = *reinterpret_cast<GLuint*>(gs_texture_get_obj(source->get_object()));
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// Source -> Texture Unit 0, Read Color Framebuffer
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glActiveTexture(GL_TEXTURE0);
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D_OPENGL_CHECK_ERROR("glActiveTexture(GL_TEXTURE0);");
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glBindTexture(GL_TEXTURE_2D, source_ref);
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D_OPENGL_CHECK_ERROR("glBindTexture(GL_TEXTURE_2D, origin);");
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glBindFramebuffer(GL_READ_FRAMEBUFFER, info.fbo);
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D_OPENGL_CHECK_ERROR("glBindFramebuffer(GL_READ_FRAMEBUFFER, info.fbo);");
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, source_ref,
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0); // Origin is a render target, not a texture
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D_OPENGL_CHECK_ERROR(
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"glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, origin, mip_level);");
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D_OPENGL_CHECK_FRAMEBUFFERSTATUS(
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GL_READ_FRAMEBUFFER,
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"glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, origin, mip_level);");
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// Target -> Texture Unit 1
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glActiveTexture(GL_TEXTURE1);
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D_OPENGL_CHECK_ERROR("glActiveTexture(GL_TEXTURE1);");
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glBindTexture(GL_TEXTURE_2D, info.target);
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D_OPENGL_CHECK_ERROR("glBindTexture(GL_TEXTURE_2D, info.target);");
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// Copy Data
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glCopyTexSubImage2D(GL_TEXTURE_2D, static_cast<GLint>(mip_level), 0, 0, 0, 0, static_cast<GLsizei>(width),
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static_cast<GLsizei>(height));
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D_OPENGL_CHECK_ERROR("glCopyTexSubImage2D(GL_TEXTURE_2D, mip_level, 0, 0, 0, 0, width, height);");
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// Target -/-> Texture Unit 1
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glActiveTexture(GL_TEXTURE1);
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D_OPENGL_CHECK_ERROR("glActiveTexture(GL_TEXTURE1);");
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glBindTexture(GL_TEXTURE_2D, 0);
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D_OPENGL_CHECK_ERROR("glBindTexture(GL_TEXTURE_2D, 0);");
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// Source -/-> Texture Unit 0, Read Color Framebuffer
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glActiveTexture(GL_TEXTURE0);
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D_OPENGL_CHECK_ERROR("glActiveTexture(GL_TEXTURE0);");
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glBindTexture(GL_TEXTURE_2D, 0);
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D_OPENGL_CHECK_ERROR("glBindTexture(GL_TEXTURE_2D, 0);");
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glBindFramebuffer(GL_READ_FRAMEBUFFER, info.fbo);
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D_OPENGL_CHECK_ERROR("glBindFramebuffer(GL_READ_FRAMEBUFFER, info.fbo);");
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
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D_OPENGL_CHECK_ERROR("glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);");
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glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
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D_OPENGL_CHECK_ERROR("glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);");
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}
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streamfx::gfx::mipmapper::~mipmapper()
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{
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_rt.reset();
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_effect.reset();
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}
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streamfx::gfx::mipmapper::mipmapper() : _gfx_util(::streamfx::gfx::util::get())
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{
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auto gctx = streamfx::obs::gs::context();
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{
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auto file = streamfx::data_file_path("effects/mipgen.effect");
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try {
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_effect = streamfx::obs::gs::effect::create(file);
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} catch (const std::exception& ex) {
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DLOG_ERROR("Error loading '%s': %s", file.generic_u8string().c_str(), ex.what());
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}
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}
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}
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uint32_t streamfx::gfx::mipmapper::calculate_max_mip_level(uint32_t width, uint32_t height)
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{
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return static_cast<uint32_t>(
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1 + std::lroundl(floor(log2(std::max<GLint>(static_cast<GLint>(width), static_cast<GLint>(height))))));
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}
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void streamfx::gfx::mipmapper::rebuild(std::shared_ptr<streamfx::obs::gs::texture> source,
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std::shared_ptr<streamfx::obs::gs::texture> target)
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{
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{ // Validate arguments and structure.
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if (!source || !target)
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return; // Do nothing if source or target are missing.
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if (!_effect)
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return; // Do nothing if the necessary data failed to load.
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// Ensure texture sizes match
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if ((source->get_width() != target->get_width()) || (source->get_height() != target->get_height())) {
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throw std::invalid_argument("source and target must have same size");
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}
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// Ensure texture types match
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if ((source->get_type() != target->get_type())) {
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throw std::invalid_argument("source and target must have same type");
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}
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// Ensure texture formats match
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if ((source->get_color_format() != target->get_color_format())) {
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throw std::invalid_argument("source and target must have same format");
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}
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}
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// Get a unique lock on the graphics context.
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auto gctx = streamfx::obs::gs::context();
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// Do we need to recreate the render target for a different format?
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if ((!_rt) || (source->get_color_format() != _rt->get_color_format())) {
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_rt = std::make_unique<streamfx::obs::gs::rendertarget>(source->get_color_format(), GS_ZS_NONE);
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}
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// Initialize API Handlers.
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opengl_info oglinfo;
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if (gs_get_device_type() == GS_DEVICE_OPENGL) {
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opengl_initialize(oglinfo, source, target);
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}
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#ifdef _WIN32
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d3d_info d3dinfo;
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if (gs_get_device_type() == GS_DEVICE_DIRECT3D_11) {
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d3d_initialize(d3dinfo, source, target);
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}
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#endif
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// Use different methods for different types of textures.
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if (source->get_type() == streamfx::obs::gs::texture::type::Normal) {
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uint32_t width = source->get_width();
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uint32_t height = source->get_height();
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size_t max_mip_level = calculate_max_mip_level(width, height);
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{
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#if defined(ENABLE_PROFILING) && !defined(D_PLATFORM_MAC) && _DEBUG
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auto cctr = streamfx::obs::gs::debug_marker(streamfx::obs::gs::debug_color_azure_radiance,
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"Mip Level %" PRId64 "", 0);
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#endif
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// Retrieve maximum mip map level.
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#ifdef _WIN32
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if (gs_get_device_type() == GS_DEVICE_DIRECT3D_11) {
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d3d_copy_subregion(d3dinfo, source, 0, width, height);
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}
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#endif
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if (gs_get_device_type() == GS_DEVICE_OPENGL) {
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opengl_copy_subregion(oglinfo, source, 0, width, height);
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}
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}
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// Set up rendering state.
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gs_blend_state_push();
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gs_reset_blend_state();
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gs_enable_blending(false);
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gs_blend_function(GS_BLEND_ONE, GS_BLEND_ZERO);
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gs_enable_color(true, true, true, true);
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gs_enable_depth_test(false);
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gs_enable_stencil_test(false);
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gs_enable_stencil_write(false);
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gs_set_cull_mode(GS_NEITHER);
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// sRGB support.
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bool old_srgb = gs_framebuffer_srgb_enabled();
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gs_enable_framebuffer_srgb(gs_get_linear_srgb());
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// Render each mip map level.
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for (size_t mip = 1; mip < max_mip_level; mip++) {
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#if defined(ENABLE_PROFILING) && !defined(D_PLATFORM_MAC) && _DEBUG
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auto cctr = streamfx::obs::gs::debug_marker(streamfx::obs::gs::debug_color_azure_radiance,
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"Mip Level %" PRIuMAX, mip);
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#endif
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uint32_t cwidth = std::max<uint32_t>(width >> mip, 1);
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uint32_t cheight = std::max<uint32_t>(height >> mip, 1);
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float_t iwidth = 1.f / static_cast<float_t>(cwidth);
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float_t iheight = 1.f / static_cast<float_t>(cheight);
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try {
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auto op = _rt->render(cwidth, cheight);
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gs_ortho(0, 1, 0, 1, 0, 1);
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_effect.get_parameter("image").set_texture(target, gs_get_linear_srgb());
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_effect.get_parameter("imageTexel").set_float2(iwidth, iheight);
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_effect.get_parameter("level").set_int(int32_t(mip - 1));
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while (gs_effect_loop(_effect.get_object(), "Draw")) {
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_gfx_util->draw_fullscreen_triangle();
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}
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} catch (...) {
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}
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// Copy from the render target to the target mip level.
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#ifdef _WIN32
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if (gs_get_device_type() == GS_DEVICE_DIRECT3D_11) {
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d3d_copy_subregion(d3dinfo, _rt->get_texture(), static_cast<uint32_t>(mip), cwidth, cheight);
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}
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#endif
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if (gs_get_device_type() == GS_DEVICE_OPENGL) {
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opengl_copy_subregion(oglinfo, _rt->get_texture(), static_cast<uint32_t>(mip), cwidth, cheight);
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}
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}
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// Clean up rendering state.
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gs_enable_framebuffer_srgb(old_srgb);
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gs_blend_state_pop();
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} else {
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throw std::runtime_error("Only 2D Textures support Mip-mapping.");
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}
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// Finalize API handlers.
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if (gs_get_device_type() == GS_DEVICE_OPENGL) {
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opengl_finalize(oglinfo);
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}
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#ifdef _WIN32
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if (gs_get_device_type() == GS_DEVICE_DIRECT3D_11) {
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//d3d_finalize(d3dinfo);
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}
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#endif
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}
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