318 lines
8.5 KiB
Plaintext
318 lines
8.5 KiB
Plaintext
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2023 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "renderMetal.h"
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#include "backends/imgui_impl_metal.h"
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#include <Metal/Metal.h>
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#include <QuartzCore/QuartzCore.h>
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struct FurnaceGUIRenderMetalPrivate {
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CAMetalLayer* context;
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id<MTLCommandQueue> cmdQueue;
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id<MTLCommandBuffer> cmdBuf;
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id<MTLRenderCommandEncoder> renderEncoder;
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id<CAMetalDrawable> drawable;
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MTLRenderPassDescriptor* renderPass;
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FurnaceGUIRenderMetalPrivate():
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context(NULL),
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cmdQueue(NULL),
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cmdBuf(NULL),
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renderEncoder(NULL),
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drawable(NULL),
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renderPass(NULL) {}
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};
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class FurnaceMetalTexture: public FurnaceGUITexture {
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public:
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id<MTLTexture> tex;
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int width, height;
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unsigned char* lockedData;
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FurnaceMetalTexture():
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tex(NULL),
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width(0),
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height(0),
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lockedData(NULL) {}
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};
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ImTextureID FurnaceGUIRenderMetal::getTextureID(FurnaceGUITexture* which) {
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FurnaceMetalTexture* t=(FurnaceMetalTexture*)which;
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return t->tex;
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}
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bool FurnaceGUIRenderMetal::lockTexture(FurnaceGUITexture* which, void** data, int* pitch) {
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FurnaceMetalTexture* t=(FurnaceMetalTexture*)which;
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if (t->lockedData!=NULL) return false;
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t->lockedData=new unsigned char[t->width*t->height*4];
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*data=t->lockedData;
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*pitch=t->width*4;
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return true;
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}
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bool FurnaceGUIRenderMetal::unlockTexture(FurnaceGUITexture* which) {
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FurnaceMetalTexture* t=(FurnaceMetalTexture*)which;
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if (t->lockedData==NULL) return false;
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[t->tex replaceRegion:MTLRegionMake2D(0,0,(NSUInteger)t->width,(NSUInteger)t->height) mipmapLevel:0 withBytes:t->lockedData bytesPerRow:(NSUInteger)t->width*4];
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delete[] t->lockedData;
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t->lockedData=NULL;
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return true;
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}
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bool FurnaceGUIRenderMetal::updateTexture(FurnaceGUITexture* which, void* data, int pitch) {
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FurnaceMetalTexture* t=(FurnaceMetalTexture*)which;
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[t->tex replaceRegion:MTLRegionMake2D(0,0,(NSUInteger)t->width,(NSUInteger)t->height) mipmapLevel:0 withBytes:data bytesPerRow:(NSUInteger)pitch];
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return true;
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}
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FurnaceGUITexture* FurnaceGUIRenderMetal::createTexture(bool dynamic, int width, int height, bool interpolate) {
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MTLTextureDescriptor* texDesc=[MTLTextureDescriptor texture2DDescriptorWithPixelFormat:MTLPixelFormatRGBA8Unorm width:(NSUInteger)width height:(NSUInteger)height mipmapped:NO];
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texDesc.usage=MTLTextureUsageShaderRead;
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texDesc.storageMode=MTLStorageModeManaged;
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id<MTLTexture> texture=[priv->context.device newTextureWithDescriptor:texDesc];
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if (texture==NULL) return NULL;
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FurnaceMetalTexture* ret=new FurnaceMetalTexture;
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ret->tex=texture;
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ret->width=width;
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ret->height=height;
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[texDesc release];
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return ret;
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}
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bool FurnaceGUIRenderMetal::destroyTexture(FurnaceGUITexture* which) {
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FurnaceMetalTexture* t=(FurnaceMetalTexture*)which;
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[t->tex release];
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t->tex=NULL;
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delete t;
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return true;
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}
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void FurnaceGUIRenderMetal::setTextureBlendMode(FurnaceGUITexture* which, FurnaceGUIBlendMode mode) {
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}
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void FurnaceGUIRenderMetal::setBlendMode(FurnaceGUIBlendMode mode) {
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}
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// you should only call this once!!!
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void FurnaceGUIRenderMetal::clear(ImVec4 color) {
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int outW, outH;
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getOutputSize(outW,outH);
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priv->context.drawableSize=CGSizeMake(outW,outH);
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if (priv->drawable) {
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[priv->drawable release];
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}
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if (priv->cmdBuf) {
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[priv->cmdBuf release];
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}
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priv->drawable=[priv->context nextDrawable];
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priv->cmdBuf=[priv->cmdQueue commandBuffer];
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priv->renderPass.colorAttachments[0].clearColor=MTLClearColorMake(color.x,color.y,color.z,color.w);
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priv->renderPass.colorAttachments[0].texture=priv->drawable.texture;
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priv->renderPass.colorAttachments[0].loadAction=MTLLoadActionClear;
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priv->renderPass.colorAttachments[0].storeAction=MTLStoreActionStore;
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priv->renderEncoder=[priv->cmdBuf renderCommandEncoderWithDescriptor:priv->renderPass];
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}
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bool FurnaceGUIRenderMetal::newFrame() {
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return ImGui_ImplMetal_NewFrame(priv->renderPass);
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}
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bool FurnaceGUIRenderMetal::canVSync() {
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return swapIntervalSet;
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}
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void FurnaceGUIRenderMetal::createFontsTexture() {
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ImGui_ImplMetal_CreateFontsTexture(priv->context.device);
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}
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void FurnaceGUIRenderMetal::destroyFontsTexture() {
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ImGui_ImplMetal_DestroyFontsTexture();
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}
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void FurnaceGUIRenderMetal::renderGUI() {
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ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(),priv->cmdBuf,priv->renderEncoder);
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}
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void FurnaceGUIRenderMetal::wipe(float alpha) {
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// you know what? cheat.
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// I don't feel like learning yet another API just to please Apple.
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// screw it.
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SDL_SetRenderDrawBlendMode(sdlRend,SDL_BLENDMODE_BLEND);
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SDL_SetRenderDrawColor(sdlRend,0,0,0,255*alpha);
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SDL_RenderFillRect(sdlRend,NULL);
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}
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void FurnaceGUIRenderMetal::present() {
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[priv->renderEncoder endEncoding];
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[priv->cmdBuf presentDrawable:priv->drawable];
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[priv->cmdBuf commit];
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[priv->renderEncoder release];
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}
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bool FurnaceGUIRenderMetal::getOutputSize(int& w, int& h) {
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return SDL_GetRendererOutputSize(sdlRend,&w,&h)==0;
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}
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int FurnaceGUIRenderMetal::getWindowFlags() {
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return 0;
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}
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int FurnaceGUIRenderMetal::getMaxTextureWidth() {
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return bigTextures?16384:8192;
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}
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int FurnaceGUIRenderMetal::getMaxTextureHeight() {
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return bigTextures?16384:8192;
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}
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const char* FurnaceGUIRenderMetal::getBackendName() {
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return "Metal";
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}
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const char* FurnaceGUIRenderMetal::getVendorName() {
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return vendorName.c_str();
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}
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const char* FurnaceGUIRenderMetal::getDeviceName() {
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return deviceName.c_str();
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}
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const char* FurnaceGUIRenderMetal::getAPIVersion() {
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return apiVersion.c_str();
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}
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void FurnaceGUIRenderMetal::setSwapInterval(int swapInterval) {
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if (SDL_RenderSetVSync(sdlRend,(swapInterval>=0)?1:0)!=0) {
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swapIntervalSet=false;
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logW("tried to enable VSync but couldn't!");
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} else {
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swapIntervalSet=true;
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}
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}
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void FurnaceGUIRenderMetal::preInit() {
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SDL_SetHint(SDL_HINT_RENDER_DRIVER,"metal");
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priv=new FurnaceGUIRenderMetalPrivate;
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}
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static const char* metalFamilyNames[]={
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"Apple1",
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"Apple2",
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"Apple3",
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"Apple4",
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"Apple5",
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"Apple6",
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"Apple7",
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"Apple8",
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"Apple9",
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"Mac1",
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"Mac2",
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"Common1",
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"Common2",
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"Common3",
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"Metal3",
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NULL
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};
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static const NSInteger metalFamilies[]={
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1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, // Apple
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2001, 2002, // Mac
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3001, 3002, 3003, // Common
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5001, // Metal3
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0
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};
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bool FurnaceGUIRenderMetal::init(SDL_Window* win, int swapInterval) {
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SDL_SetHint(SDL_HINT_RENDER_DRIVER,"metal");
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sdlRend=SDL_CreateRenderer(win,-1,SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC|SDL_RENDERER_TARGETTEXTURE);
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if (sdlRend==NULL) return false;
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if (SDL_RenderSetVSync(sdlRend,(swapInterval>=0)?1:0)!=0) {
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swapIntervalSet=false;
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logW("tried to enable VSync but couldn't!");
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} else {
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swapIntervalSet=true;
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}
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logI("retrieving context...");
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priv->context=(__bridge CAMetalLayer*)SDL_RenderGetMetalLayer(sdlRend);
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if (priv->context==NULL) {
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logE("Metal layer is NULL!");
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return false;
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}
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vendorName="N/A";
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deviceName=[priv->context.device.name UTF8String];
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apiVersion="";
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bool comma=false;
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for (int i=0; metalFamilies[i]; i++) {
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const char* familyName=metalFamilyNames[i];
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MTLGPUFamily family=(MTLGPUFamily)metalFamilies[i];
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if ([priv->context.device supportsFamily:family]) {
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if (comma) {
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apiVersion+=", ";
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}
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apiVersion+=familyName;
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comma=true;
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}
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}
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priv->context.pixelFormat=MTLPixelFormatBGRA8Unorm;
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priv->cmdQueue=[priv->context.device newCommandQueue];
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priv->renderPass=[MTLRenderPassDescriptor new];
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return true;
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}
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void FurnaceGUIRenderMetal::initGUI(SDL_Window* win) {
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ImGui_ImplMetal_Init(priv->context.device);
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ImGui_ImplSDL2_InitForMetal(win);
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}
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void FurnaceGUIRenderMetal::quitGUI() {
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ImGui_ImplMetal_Shutdown();
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}
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bool FurnaceGUIRenderMetal::quit() {
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if (sdlRend==NULL) return false;
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[priv->renderPass release];
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[priv->cmdQueue release];
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SDL_DestroyRenderer(sdlRend);
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sdlRend=NULL;
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return true;
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}
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