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Merge pull request #108 from Bigpet/viewport_fix

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Backup and restore the viewport size when rendering sliders
This commit is contained in:
Jeffrey Han 2015-07-09 11:54:27 -05:00
commit 2be92ecdca
2 changed files with 27 additions and 22 deletions
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17
src/itdelatrisu/opsu/render/CurveRenderState.java
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@ -24,8 +24,10 @@ import itdelatrisu.opsu.objects.curves.Vec2f;
import java.nio.ByteBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import org.lwjgl.BufferUtils;
import org.lwjgl.opengl.EXTFramebufferObject;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL13;
import org.lwjgl.opengl.GL14;
@ -114,10 +116,14 @@ public class CurveRenderState {
mapping = cache.insert(hitObject);
fbo = mapping;
int old_fb = GL11.glGetInteger(GL30.GL_FRAMEBUFFER_BINDING);
int old_tex = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
int oldFb = GL11.glGetInteger(EXTFramebufferObject.GL_FRAMEBUFFER_BINDING_EXT);
int oldTex = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
GL30.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, fbo.getID());
//glGetInteger requires a buffer of size 16, even though just 4
//values are returned in this specific case
IntBuffer oldViewport = BufferUtils.createIntBuffer(16);
GL11.glGetInteger(GL11.GL_VIEWPORT, oldViewport);
EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, fbo.getID());
GL11.glViewport(0, 0, fbo.width, fbo.height);
GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
@ -125,8 +131,9 @@ public class CurveRenderState {
this.draw_curve(color, borderColor, curve);
color.a = 1f;
GL11.glBindTexture(GL11.GL_TEXTURE_2D, old_tex);
GL30.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, old_fb);
GL11.glBindTexture(GL11.GL_TEXTURE_2D, oldTex);
EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, oldFb);
GL11.glViewport(oldViewport.get(0), oldViewport.get(1), oldViewport.get(2), oldViewport.get(3));
Utils.COLOR_WHITE_FADE.a = alpha;
}

32
src/itdelatrisu/opsu/render/Rendertarget.java
View File

@ -19,10 +19,8 @@ package itdelatrisu.opsu.render;
import java.nio.ByteBuffer;
import org.lwjgl.opengl.EXTFramebufferObject;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL20;
import org.lwjgl.opengl.GL30;
import org.lwjgl.opengl.GL32;
/**
* Represents a rendertarget. For now this maps to an OpenGL FBO via LWJGL.
@ -50,16 +48,16 @@ public class Rendertarget {
private Rendertarget(int width, int height) {
this.width = width;
this.height = height;
fboID = GL30.glGenFramebuffers();
fboID = EXTFramebufferObject.glGenFramebuffersEXT();
textureID = GL11.glGenTextures();
depthBufferID = GL30.glGenRenderbuffers();
depthBufferID = EXTFramebufferObject.glGenRenderbuffersEXT();
}
/**
* Bind this rendertarget as the primary framebuffer.
*/
public void bind() {
GL30.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, fboID);
EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, fboID);
}
/**
@ -83,7 +81,7 @@ public class Rendertarget {
* Bind the default framebuffer.
*/
public static void unbind() {
GL30.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, 0);
EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, 0);
}
/**
@ -93,8 +91,9 @@ public class Rendertarget {
* @param height the height
*/
public static Rendertarget createRTTFramebuffer(int width, int height) {
int old_framebuffer = GL11.glGetInteger(GL30.GL_READ_FRAMEBUFFER_BINDING);
int old_framebuffer = GL11.glGetInteger(EXTFramebufferObject.GL_FRAMEBUFFER_BINDING_EXT);
int old_texture = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
int old_drawbuffer = GL11.glGetInteger(GL11.GL_DRAW_BUFFER);
Rendertarget buffer = new Rendertarget(width,height);
buffer.bind();
@ -104,16 +103,15 @@ public class Rendertarget {
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, buffer.depthBufferID);
GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL11.GL_DEPTH_COMPONENT, width, height);
GL30.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_ATTACHMENT, GL30.GL_RENDERBUFFER, buffer.depthBufferID);
EXTFramebufferObject.glBindRenderbufferEXT(EXTFramebufferObject.GL_RENDERBUFFER_EXT, buffer.depthBufferID);
EXTFramebufferObject.glRenderbufferStorageEXT(EXTFramebufferObject.GL_RENDERBUFFER_EXT, GL11.GL_DEPTH_COMPONENT, width, height);
EXTFramebufferObject.glFramebufferRenderbufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, EXTFramebufferObject.GL_DEPTH_ATTACHMENT_EXT, EXTFramebufferObject.GL_RENDERBUFFER_EXT, buffer.depthBufferID);
GL32.glFramebufferTexture(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0, fboTexture, 0);
GL20.glDrawBuffers(GL30.GL_COLOR_ATTACHMENT0);
EXTFramebufferObject.glFramebufferTexture2DEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, EXTFramebufferObject.GL_COLOR_ATTACHMENT0_EXT, GL11.GL_TEXTURE_2D, fboTexture, 0);
GL11.glBindTexture(GL11.GL_TEXTURE_2D, old_texture);
GL30.glBindFramebuffer(GL30.GL_DRAW_FRAMEBUFFER, old_framebuffer);
EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, old_framebuffer);
return buffer;
}
@ -122,8 +120,8 @@ public class Rendertarget {
* to use this rendertarget with OpenGL after calling this method.
*/
public void destroyRTT() {
GL30.glDeleteFramebuffers(fboID);
GL30.glDeleteRenderbuffers(depthBufferID);
EXTFramebufferObject.glDeleteFramebuffersEXT(fboID);
EXTFramebufferObject.glDeleteRenderbuffersEXT(depthBufferID);
GL11.glDeleteTextures(textureID);
}
}