Inital support for lower resolution rendering

src/main/java/me/cortex/voxy/client/core/AbstractRenderPipeline.java

@@ -69,15 +69,15 @@ public abstract class AbstractRenderPipeline extends TrackedObject {
         this.sectionRenderer = sectionRenderer;
     }
 
-    protected abstract int setup(Viewport<?> viewport, int sourceFramebuffer);
+    protected abstract int setup(Viewport<?> viewport, int sourceFramebuffer, int srcWidth, int srcHeight);
     protected abstract void postOpaquePreTranslucent(Viewport<?> viewport);
-    protected void finish(Viewport<?> viewport, int sourceFrameBuffer) {
+    protected void finish(Viewport<?> viewport, int sourceFrameBuffer, int srcWidth, int srcHeight) {
         glDisable(GL_STENCIL_TEST);
         glBindFramebuffer(GL_FRAMEBUFFER, sourceFrameBuffer);
     }
 
-    public void runPipeline(Viewport<?> viewport, int sourceFrameBuffer) {
+    public void runPipeline(Viewport<?> viewport, int sourceFrameBuffer, int srcWidth, int srcHeight) {
-        int depthTexture = this.setup(viewport, sourceFrameBuffer);
+        int depthTexture = this.setup(viewport, sourceFrameBuffer, srcWidth, srcHeight);
 
         var rs = ((AbstractSectionRenderer)this.sectionRenderer);
         rs.renderOpaque(viewport);
@@ -89,13 +89,13 @@ public abstract class AbstractRenderPipeline extends TrackedObject {
 
         rs.renderTranslucent(viewport);
 
-        this.finish(viewport, sourceFrameBuffer);
+        this.finish(viewport, sourceFrameBuffer, srcWidth, srcHeight);
         glBindFramebuffer(GL_FRAMEBUFFER, sourceFrameBuffer);
     }
 
-    protected void initDepthStencil(int sourceFrameBuffer, int targetFb, int width, int height) {
+    protected void initDepthStencil(int sourceFrameBuffer, int targetFb, int srcWidth, int srcHeight, int width, int height) {
         glClearNamedFramebufferfi(targetFb, GL_DEPTH_STENCIL, 0, 1.0f, 1);
-        glBlitNamedFramebuffer(sourceFrameBuffer, targetFb, 0,0, width, height, 0,0, width, height, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
+        glBlitNamedFramebuffer(sourceFrameBuffer, targetFb, 0,0, srcWidth, srcHeight, 0,0, width, height, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
 
         glBindFramebuffer(GL30.GL_FRAMEBUFFER, targetFb);
 

src/main/java/me/cortex/voxy/client/core/IrisVoxyRenderPipeline.java

@@ -90,7 +90,7 @@ public class IrisVoxyRenderPipeline extends AbstractRenderPipeline {
     }
 
     @Override
-    protected int setup(Viewport<?> viewport, int sourceFramebuffer) {
+    protected int setup(Viewport<?> viewport, int sourceFramebuffer, int srcWidth, int srcHeight) {
         if (this.shaderUniforms != null) {
             //Update the uniforms
             long ptr = UploadStream.INSTANCE.uploadTo(this.shaderUniforms);
@@ -109,7 +109,7 @@ public class IrisVoxyRenderPipeline extends AbstractRenderPipeline {
             glClear(GL_COLOR_BUFFER_BIT);
         }
 
-        this.initDepthStencil(sourceFramebuffer, this.fb.framebuffer.id, viewport.width, viewport.height);
+        this.initDepthStencil(sourceFramebuffer, this.fb.framebuffer.id, srcWidth, srcHeight, viewport.width, viewport.height);
         return this.fb.getDepthTex().id;
     }
 
@@ -129,8 +129,8 @@ public class IrisVoxyRenderPipeline extends AbstractRenderPipeline {
     }
 
     @Override
-    protected void finish(Viewport<?> viewport, int sourceFrameBuffer) {
+    protected void finish(Viewport<?> viewport, int sourceFrameBuffer, int srcWidth, int srcHeight) {
-        if (this.data.renderToVanillaDepth) {
+        if (this.data.renderToVanillaDepth && srcWidth == viewport.width  && srcHeight == viewport.height) {//We can only depthblit out if destination size is the same
             glColorMask(false, false, false, false);
             AbstractRenderPipeline.transformBlitDepth(this.depthBlit,
                     this.fbTranslucent.getDepthTex().id, sourceFrameBuffer,

src/main/java/me/cortex/voxy/client/core/NormalRenderPipeline.java

@@ -54,7 +54,7 @@ public class NormalRenderPipeline extends AbstractRenderPipeline {
     }
 
     @Override
-    protected int setup(Viewport<?> viewport, int sourceFB) {
+    protected int setup(Viewport<?> viewport, int sourceFB, int srcWidth, int srcHeight) {
         if (this.colourTex == null || this.colourTex.getHeight() != viewport.height || this.colourTex.getWidth() != viewport.width) {
             if (this.colourTex != null) {
                 this.colourTex.free();
@@ -76,7 +76,7 @@ public class NormalRenderPipeline extends AbstractRenderPipeline {
             glTextureParameterf(this.fb.getDepthTex().id, GL_DEPTH_STENCIL_TEXTURE_MODE, GL_DEPTH_COMPONENT);
         }
 
-        this.initDepthStencil(sourceFB, this.fb.framebuffer.id, viewport.width, viewport.height);
+        this.initDepthStencil(sourceFB, this.fb.framebuffer.id, viewport.width, viewport.height, viewport.width, viewport.height);
 
         return this.fb.getDepthTex().id;
     }
@@ -103,7 +103,7 @@ public class NormalRenderPipeline extends AbstractRenderPipeline {
     }
 
     @Override
-    protected void finish(Viewport<?> viewport, int sourceFrameBuffer) {
+    protected void finish(Viewport<?> viewport, int sourceFrameBuffer, int srcWidth, int srcHeight) {
         this.finalBlit.bind();
         if (this.useEnvFog) {
             float start = viewport.fogParameters.environmentalStart();

src/main/java/me/cortex/voxy/client/core/VoxyRenderSystem.java

@@ -205,6 +205,9 @@ public class VoxyRenderSystem {
         int oldFB = GL11.glGetInteger(GL_DRAW_FRAMEBUFFER_BINDING);
         int boundFB = oldFB;
 
+        int[] dims = new int[4];
+        glGetIntegerv(GL_VIEWPORT, dims);
+
         //var target = DefaultTerrainRenderPasses.CUTOUT.getTarget();
         //boundFB = ((net.minecraft.client.texture.GlTexture) target.getColorAttachment()).getOrCreateFramebuffer(((GlBackend) RenderSystem.getDevice()).getFramebufferManager(), target.getDepthAttachment());
         if (boundFB == 0) {
@@ -224,7 +227,7 @@ public class VoxyRenderSystem {
 
 
         //The entire rendering pipeline (excluding the chunkbound thing)
-        this.pipeline.runPipeline(viewport, boundFB);
+        this.pipeline.runPipeline(viewport, boundFB, dims[2], dims[3]);
 
 
         TimingStatistics.main.stop();