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- Framebuffer can now render to a cube map face, thanks to dflemstr

Browse Source 
http://jmonkeyengine.org/groups/contribution-depot-jme3/forum/topic/how-do-i-render-to-a-face-of-a-texturecubemap/?#post-171990

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9363 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
This commit is contained in:
rem..om 2012-05-08 19:51:08 +00:00
parent c9d5011555
commit 311242b6d9
3 changed files with 89 additions and 21 deletions
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49
engine/src/core/com/jme3/texture/FrameBuffer.java
View File

@ -92,6 +92,7 @@ public class FrameBuffer extends NativeObject {
Image.Format format;
int id = -1;
int slot = -1;
int face = -1;
/**
* @return The image format of the render buffer.
@ -129,6 +130,10 @@ public class FrameBuffer extends NativeObject {
return slot;
}
public int getFace() {
return face;
}
public void resetObject(){
id = -1;
}
@ -305,8 +310,8 @@ public class FrameBuffer extends NativeObject {
/**
* Set the color texture to use for this framebuffer.
* This automatically clears all existing textures added previously
* with {@link FrameBuffer#addColorTexture(com.jme3.texture.Texture2D) }
* and adds this texture as the only target.
* with {@link FrameBuffer#addColorTexture } and adds this texture as the
* only target.
*
* @param tex The color texture to set.
*/
@ -315,6 +320,20 @@ public class FrameBuffer extends NativeObject {
addColorTexture(tex);
}
/**
* Set the color texture to use for this framebuffer.
* This automatically clears all existing textures added previously
* with {@link FrameBuffer#addColorTexture } and adds this texture as the
* only target.
*
* @param tex The cube-map texture to set.
* @param face The face of the cube-map to render to.
*/
public void setColorTexture(TextureCubeMap tex, TextureCubeMap.Face face) {
clearColorTargets();
addColorTexture(tex, face);
}
/**
* Clears all color targets that were set or added previously.
*/
@ -346,6 +365,32 @@ public class FrameBuffer extends NativeObject {
colorBufs.add(colorBuf);
}
/**
* Add a color texture to use for this framebuffer.
* If MRT is enabled, then each subsequently added texture can be
* rendered to through a shader that writes to the array <code>gl_FragData</code>.
* If MRT is not enabled, then the index set with {@link FrameBuffer#setTargetIndex(int) }
* is rendered to by the shader.
*
* @param tex The cube-map texture to add.
* @param face The face of the cube-map to render to.
*/
public void addColorTexture(TextureCubeMap tex, TextureCubeMap.Face face) {
if (id != -1)
throw new UnsupportedOperationException("FrameBuffer already initialized.");
Image img = tex.getImage();
checkSetTexture(tex, false);
RenderBuffer colorBuf = new RenderBuffer();
colorBuf.slot = colorBufs.size();
colorBuf.tex = tex;
colorBuf.format = img.getFormat();
colorBuf.face = face.ordinal();
colorBufs.add(colorBuf);
}
/**
* Set the depth texture to use for this framebuffer.
*

23
engine/src/core/com/jme3/texture/TextureCubeMap.java
View File

@ -37,6 +37,8 @@ import com.jme3.export.JmeExporter;
import com.jme3.export.JmeImporter;
import com.jme3.export.OutputCapsule;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
/**
* Describes a cubemap texture.
@ -63,9 +65,10 @@ public class TextureCubeMap extends Texture {
* Face of the Cubemap as described by its directional offset from the
* origin.
*/
// public enum Face {
// PositiveX, NegativeX, PositiveY, NegativeY, PositiveZ, NegativeZ;
// }
public enum Face {
PositiveX, NegativeX, PositiveY, NegativeY, PositiveZ, NegativeZ;
}
public TextureCubeMap(){
super();
@ -76,6 +79,20 @@ public class TextureCubeMap extends Texture {
setImage(img);
}
public TextureCubeMap(int width, int height, Image.Format format){
this(createEmptyLayeredImage(width, height, 6, format));
}
private static Image createEmptyLayeredImage(int width, int height,
int layerCount, Image.Format format) {
ArrayList<ByteBuffer> layers = new ArrayList<ByteBuffer>();
for(int i = 0; i < layerCount; i++) {
layers.add(null);
}
Image image = new Image(format, width, height, 0, layers);
return image;
}
public Texture createSimpleClone() {
return createSimpleClone(new TextureCubeMap());
}

18
engine/src/lwjgl/com/jme3/renderer/lwjgl/LwjglRenderer.java
View File

@ -1406,7 +1406,7 @@ public class LwjglRenderer implements Renderer {
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
convertAttachmentSlot(rb.getSlot()),
convertTextureType(tex.getType(), image.getMultiSamples()),
convertTextureType(tex.getType(), image.getMultiSamples(), rb.getFace()),
image.getId(),
0);
}
@ -1503,7 +1503,7 @@ public class LwjglRenderer implements Renderer {
&& tex.getMinFilter().usesMipMapLevels()) {
setTexture(0, rb.getTexture());
int textureType = convertTextureType(tex.getType(), tex.getImage().getMultiSamples());
int textureType = convertTextureType(tex.getType(), tex.getImage().getMultiSamples(), rb.getFace());
glEnable(textureType);
glGenerateMipmapEXT(textureType);
glDisable(textureType);
@ -1655,7 +1655,7 @@ public class LwjglRenderer implements Renderer {
/*********************************************************************\
|* Textures *|
\*********************************************************************/
private int convertTextureType(Texture.Type type, int samples) {
private int convertTextureType(Texture.Type type, int samples, int face) {
switch (type) {
case TwoDimensional:
if (samples > 1) {
@ -1672,7 +1672,13 @@ public class LwjglRenderer implements Renderer {
case ThreeDimensional:
return GL_TEXTURE_3D;
case CubeMap:
if (face < 0) {
return GL_TEXTURE_CUBE_MAP;
} else if (face < 6) {
return GL_TEXTURE_CUBE_MAP_POSITIVE_X + face;
} else {
throw new UnsupportedOperationException("Invalid cube map face index: " + face);
}
default:
throw new UnsupportedOperationException("Unknown texture type: " + type);
}
@ -1728,7 +1734,7 @@ public class LwjglRenderer implements Renderer {
@SuppressWarnings("fallthrough")
private void setupTextureParams(Texture tex) {
Image image = tex.getImage();
int target = convertTextureType(tex.getType(), image != null ? image.getMultiSamples() : 1);
int target = convertTextureType(tex.getType(), image != null ? image.getMultiSamples() : 1, -1);
// filter things
int minFilter = convertMinFilter(tex.getMinFilter());
@ -1788,7 +1794,7 @@ public class LwjglRenderer implements Renderer {
}
// bind texture
int target = convertTextureType(type, img.getMultiSamples());
int target = convertTextureType(type, img.getMultiSamples(), -1);
if (context.boundTextureUnit != unit) {
glActiveTexture(GL_TEXTURE0 + unit);
context.boundTextureUnit = unit;
@ -1893,7 +1899,7 @@ public class LwjglRenderer implements Renderer {
Image[] textures = context.boundTextures;
int type = convertTextureType(tex.getType(), image.getMultiSamples());
int type = convertTextureType(tex.getType(), image.getMultiSamples(), -1);
// if (!context.textureIndexList.moveToNew(unit)) {
// if (context.boundTextureUnit != unit){
// glActiveTexture(GL_TEXTURE0 + unit);