public void clearBuffers(boolean color, boolean depth, boolean stencil) {
int bits = 0;
if (color) {
// See explanations of the depth below, we must enable color write to be able to clear the
// color buffer
if (context.colorWriteEnabled == false) {
glColorMask(true, true, true, true);
context.colorWriteEnabled = true;
}
bits = GL_COLOR_BUFFER_BIT;
}
if (depth) {
// glClear(GL_DEPTH_BUFFER_BIT) seems to not work when glDepthMask is false
// here s some link on openl board
// http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=257223
// if depth clear is requested, we enable the depthMask
if (context.depthWriteEnabled == false) {
glDepthMask(true);
context.depthWriteEnabled = true;
}
bits |= GL_DEPTH_BUFFER_BIT;
}
if (stencil) {
bits |= GL_STENCIL_BUFFER_BIT;
}
if (bits != 0) {
glClear(bits);
}
}
private void setProjection(Matrix4f projMatrix) {
if (context.matrixMode != GL_PROJECTION) {
glMatrixMode(GL_PROJECTION);
context.matrixMode = GL_PROJECTION;
}
glLoadMatrix(storeMatrix(projMatrix, fb16));
}
public void setFixedFuncBinding(FixedFuncBinding ffBinding, Object val) {
switch (ffBinding) {
case Color:
context.color = (ColorRGBA) val;
break;
case MaterialAmbient:
context.ambient = (ColorRGBA) val;
break;
case MaterialDiffuse:
context.diffuse = (ColorRGBA) val;
break;
case MaterialSpecular:
context.specular = (ColorRGBA) val;
break;
case MaterialShininess:
context.shininess = (Float) val;
break;
case UseVertexColor:
context.useVertexColor = (Boolean) val;
break;
case AlphaTestFallOff:
context.alphaTestFallOff = (Float) val;
break;
}
}
private void setModelView(Matrix4f modelMatrix, Matrix4f viewMatrix) {
if (context.matrixMode != GL_MODELVIEW) {
glMatrixMode(GL_MODELVIEW);
context.matrixMode = GL_MODELVIEW;
}
glLoadMatrix(storeMatrix(viewMatrix, fb16));
glMultMatrix(storeMatrix(modelMatrix, fb16));
}
private void setProjection(Matrix4f projMatrix) {
GL gl = GLContext.getCurrentGL();
if (context.matrixMode != GLMatrixFunc.GL_PROJECTION) {
gl.getGL2ES1().glMatrixMode(GLMatrixFunc.GL_PROJECTION);
context.matrixMode = GLMatrixFunc.GL_PROJECTION;
}
gl.getGL2ES1().glLoadMatrixf(storeMatrix(projMatrix, fb16));
}
private void setModelView(Matrix4f modelMatrix, Matrix4f viewMatrix) {
GL gl = GLContext.getCurrentGL();
if (context.matrixMode != GLMatrixFunc.GL_MODELVIEW) {
gl.getGL2ES1().glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
context.matrixMode = GLMatrixFunc.GL_MODELVIEW;
}
gl.getGL2ES1().glLoadMatrixf(storeMatrix(viewMatrix, fb16));
gl.getGL2ES1().glMultMatrixf(storeMatrix(modelMatrix, fb16));
}
/** Reset fixed function bindings to default values. */
private void resetFixedFuncBindings() {
context.alphaTestFallOff = 0f; // zero means disable alpha test!
context.color = null;
context.ambient = null;
context.diffuse = null;
context.specular = null;
context.shininess = 0;
context.useVertexColor = false;
}
public void clearClipRect() {
if (context.clipRectEnabled) {
glDisable(GL_SCISSOR_TEST);
context.clipRectEnabled = false;
clipX = 0;
clipY = 0;
clipW = 0;
clipH = 0;
}
}
public void clearClipRect() {
GL gl = GLContext.getCurrentGL();
if (context.clipRectEnabled) {
gl.glDisable(GL.GL_SCISSOR_TEST);
context.clipRectEnabled = false;
clipX = 0;
clipY = 0;
clipW = 0;
clipH = 0;
}
}
public void renderMesh(Mesh mesh, int lod, int count) {
if (mesh.getVertexCount() == 0) {
return;
}
if (context.pointSize != mesh.getPointSize()) {
glPointSize(mesh.getPointSize());
context.pointSize = mesh.getPointSize();
}
if (context.lineWidth != mesh.getLineWidth()) {
glLineWidth(mesh.getLineWidth());
context.lineWidth = mesh.getLineWidth();
}
boolean dynamic = false;
if (mesh.getBuffer(Type.InterleavedData) != null) {
throw new UnsupportedOperationException("Interleaved meshes are not supported");
}
if (mesh.getNumLodLevels() == 0) {
for (VertexBuffer vb : mesh.getBufferList().getArray()) {
if (vb.getUsage() != VertexBuffer.Usage.Static) {
dynamic = true;
break;
}
}
} else {
dynamic = true;
}
statistics.onMeshDrawn(mesh, lod);
// if (!dynamic) {
// dealing with a static object, generate display list
// renderMeshDisplayList(mesh);
// } else {
renderMeshDefault(mesh, lod, count);
// }
}
public void setClipRect(int x, int y, int width, int height) {
if (!context.clipRectEnabled) {
glEnable(GL_SCISSOR_TEST);
context.clipRectEnabled = true;
}
if (clipX != x || clipY != y || clipW != width || clipH != height) {
glScissor(x, y, width, height);
clipX = x;
clipY = y;
clipW = width;
clipH = height;
}
}
public void setVertexAttrib(VertexBuffer vb, VertexBuffer idb) {
if (vb.getBufferType() == VertexBuffer.Type.Color && !context.useVertexColor) {
// Ignore vertex color buffer if vertex color is disabled.
return;
}
int arrayType = convertArrayType(vb.getBufferType());
if (arrayType == -1) {
return; // unsupported
}
glEnableClientState(arrayType);
context.boundAttribs[vb.getBufferType().ordinal()] = vb;
if (vb.getBufferType() == Type.Normal) {
// normalize if requested
if (vb.isNormalized() && !context.normalizeEnabled) {
glEnable(GL_NORMALIZE);
context.normalizeEnabled = true;
} else if (!vb.isNormalized() && context.normalizeEnabled) {
glDisable(GL_NORMALIZE);
context.normalizeEnabled = false;
}
}
// NOTE: Use data from interleaved buffer if specified
Buffer data = idb != null ? idb.getData() : vb.getData();
int comps = vb.getNumComponents();
int type = convertVertexFormat(vb.getFormat());
data.rewind();
switch (vb.getBufferType()) {
case Position:
if (!(data instanceof FloatBuffer)) {
throw new UnsupportedOperationException();
}
glVertexPointer(comps, vb.getStride(), (FloatBuffer) data);
break;
case Normal:
if (!(data instanceof FloatBuffer)) {
throw new UnsupportedOperationException();
}
glNormalPointer(vb.getStride(), (FloatBuffer) data);
break;
case Color:
if (data instanceof FloatBuffer) {
glColorPointer(comps, vb.getStride(), (FloatBuffer) data);
} else if (data instanceof ByteBuffer) {
glColorPointer(comps, true, vb.getStride(), (ByteBuffer) data);
} else {
throw new UnsupportedOperationException();
}
break;
case TexCoord:
if (!(data instanceof FloatBuffer)) {
throw new UnsupportedOperationException();
}
glTexCoordPointer(comps, vb.getStride(), (FloatBuffer) data);
break;
default:
// Ignore, this is an unsupported attribute for OpenGL1.
break;
}
}
public void setLighting(LightList list) {
// XXX: This is abuse of setLighting() to
// apply fixed function bindings
// and do other book keeping.
if (list == null || list.size() == 0) {
glDisable(GL_LIGHTING);
applyFixedFuncBindings(false);
setModelView(worldMatrix, viewMatrix);
return;
}
// Number of lights set previously
int numLightsSetPrev = lightList.size();
// If more than maxLights are defined, they will be ignored.
// The GL1 renderer is not permitted to crash due to a
// GL1 limitation. It must render anything that the GL2 renderer
// can render (even incorrectly).
lightList.clear();
materialAmbientColor.set(0, 0, 0, 0);
for (int i = 0; i < list.size(); i++) {
Light l = list.get(i);
if (l.getType() == Light.Type.Ambient) {
// Gather
materialAmbientColor.addLocal(l.getColor());
} else {
// Add to list
lightList.add(l);
// Once maximum lights reached, exit loop.
if (lightList.size() >= maxLights) {
break;
}
}
}
applyFixedFuncBindings(true);
glEnable(GL_LIGHTING);
fb16.clear();
fb16.put(materialAmbientColor.r)
.put(materialAmbientColor.g)
.put(materialAmbientColor.b)
.put(1)
.flip();
glLightModel(GL_LIGHT_MODEL_AMBIENT, fb16);
if (context.matrixMode != GL_MODELVIEW) {
glMatrixMode(GL_MODELVIEW);
context.matrixMode = GL_MODELVIEW;
}
// Lights are already in world space, so just convert
// them to view space.
glLoadMatrix(storeMatrix(viewMatrix, fb16));
for (int i = 0; i < lightList.size(); i++) {
int glLightIndex = GL_LIGHT0 + i;
Light light = lightList.get(i);
Light.Type lightType = light.getType();
ColorRGBA col = light.getColor();
Vector3f pos;
// Enable the light
glEnable(glLightIndex);
// OGL spec states default value for light ambient is black
switch (lightType) {
case Directional:
DirectionalLight dLight = (DirectionalLight) light;
fb16.clear();
fb16.put(col.r).put(col.g).put(col.b).put(col.a).flip();
glLight(glLightIndex, GL_DIFFUSE, fb16);
glLight(glLightIndex, GL_SPECULAR, fb16);
pos = tempVec.set(dLight.getDirection()).negateLocal().normalizeLocal();
fb16.clear();
fb16.put(pos.x).put(pos.y).put(pos.z).put(0.0f).flip();
glLight(glLightIndex, GL_POSITION, fb16);
glLightf(glLightIndex, GL_SPOT_CUTOFF, 180);
break;
case Point:
PointLight pLight = (PointLight) light;
fb16.clear();
fb16.put(col.r).put(col.g).put(col.b).put(col.a).flip();
glLight(glLightIndex, GL_DIFFUSE, fb16);
glLight(glLightIndex, GL_SPECULAR, fb16);
pos = pLight.getPosition();
fb16.clear();
fb16.put(pos.x).put(pos.y).put(pos.z).put(1.0f).flip();
glLight(glLightIndex, GL_POSITION, fb16);
glLightf(glLightIndex, GL_SPOT_CUTOFF, 180);
if (pLight.getRadius() > 0) {
// Note: this doesn't follow the same attenuation model
// as the one used in the lighting shader.
glLightf(glLightIndex, GL_CONSTANT_ATTENUATION, 1);
glLightf(glLightIndex, GL_LINEAR_ATTENUATION, pLight.getInvRadius() * 2);
glLightf(
glLightIndex,
GL_QUADRATIC_ATTENUATION,
pLight.getInvRadius() * pLight.getInvRadius());
} else {
glLightf(glLightIndex, GL_CONSTANT_ATTENUATION, 1);
glLightf(glLightIndex, GL_LINEAR_ATTENUATION, 0);
glLightf(glLightIndex, GL_QUADRATIC_ATTENUATION, 0);
}
break;
case Spot:
SpotLight sLight = (SpotLight) light;
fb16.clear();
fb16.put(col.r).put(col.g).put(col.b).put(col.a).flip();
glLight(glLightIndex, GL_DIFFUSE, fb16);
glLight(glLightIndex, GL_SPECULAR, fb16);
pos = sLight.getPosition();
fb16.clear();
fb16.put(pos.x).put(pos.y).put(pos.z).put(1.0f).flip();
glLight(glLightIndex, GL_POSITION, fb16);
Vector3f dir = sLight.getDirection();
fb16.clear();
fb16.put(dir.x).put(dir.y).put(dir.z).put(1.0f).flip();
glLight(glLightIndex, GL_SPOT_DIRECTION, fb16);
float outerAngleRad = sLight.getSpotOuterAngle();
float innerAngleRad = sLight.getSpotInnerAngle();
float spotCut = outerAngleRad * FastMath.RAD_TO_DEG;
float spotExpo = 0.0f;
if (outerAngleRad > 0) {
spotExpo = (1.0f - (innerAngleRad / outerAngleRad)) * 128.0f;
}
glLightf(glLightIndex, GL_SPOT_CUTOFF, spotCut);
glLightf(glLightIndex, GL_SPOT_EXPONENT, spotExpo);
if (sLight.getSpotRange() > 0) {
glLightf(glLightIndex, GL_LINEAR_ATTENUATION, sLight.getInvSpotRange());
} else {
glLightf(glLightIndex, GL_LINEAR_ATTENUATION, 0);
}
break;
default:
throw new UnsupportedOperationException("Unrecognized light type: " + lightType);
}
}
// Disable lights after the index
for (int i = lightList.size(); i < numLightsSetPrev; i++) {
glDisable(GL_LIGHT0 + i);
}
// This will set view matrix as well.
setModelView(worldMatrix, viewMatrix);
}
public void applyRenderState(RenderState state) {
if (state.isWireframe() && !context.wireframe) {
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
context.wireframe = true;
} else if (!state.isWireframe() && context.wireframe) {
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
context.wireframe = false;
}
if (state.isDepthTest() && !context.depthTestEnabled) {
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
context.depthTestEnabled = true;
} else if (!state.isDepthTest() && context.depthTestEnabled) {
glDisable(GL_DEPTH_TEST);
context.depthTestEnabled = false;
}
if (state.isAlphaTest()) {
setFixedFuncBinding(FixedFuncBinding.AlphaTestFallOff, state.getAlphaFallOff());
} else {
setFixedFuncBinding(FixedFuncBinding.AlphaTestFallOff, 0f); // disable it
}
if (state.isDepthWrite() && !context.depthWriteEnabled) {
glDepthMask(true);
context.depthWriteEnabled = true;
} else if (!state.isDepthWrite() && context.depthWriteEnabled) {
glDepthMask(false);
context.depthWriteEnabled = false;
}
if (state.isColorWrite() && !context.colorWriteEnabled) {
glColorMask(true, true, true, true);
context.colorWriteEnabled = true;
} else if (!state.isColorWrite() && context.colorWriteEnabled) {
glColorMask(false, false, false, false);
context.colorWriteEnabled = false;
}
if (state.isPointSprite()) {
logger.log(Level.WARNING, "Point Sprite unsupported!");
}
if (state.isPolyOffset()) {
if (!context.polyOffsetEnabled) {
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(state.getPolyOffsetFactor(), state.getPolyOffsetUnits());
context.polyOffsetEnabled = true;
context.polyOffsetFactor = state.getPolyOffsetFactor();
context.polyOffsetUnits = state.getPolyOffsetUnits();
} else {
if (state.getPolyOffsetFactor() != context.polyOffsetFactor
|| state.getPolyOffsetUnits() != context.polyOffsetUnits) {
glPolygonOffset(state.getPolyOffsetFactor(), state.getPolyOffsetUnits());
context.polyOffsetFactor = state.getPolyOffsetFactor();
context.polyOffsetUnits = state.getPolyOffsetUnits();
}
}
} else {
if (context.polyOffsetEnabled) {
glDisable(GL_POLYGON_OFFSET_FILL);
context.polyOffsetEnabled = false;
context.polyOffsetFactor = 0;
context.polyOffsetUnits = 0;
}
}
if (state.getFaceCullMode() != context.cullMode) {
if (state.getFaceCullMode() == RenderState.FaceCullMode.Off) {
glDisable(GL_CULL_FACE);
} else {
glEnable(GL_CULL_FACE);
}
switch (state.getFaceCullMode()) {
case Off:
break;
case Back:
glCullFace(GL_BACK);
break;
case Front:
glCullFace(GL_FRONT);
break;
case FrontAndBack:
glCullFace(GL_FRONT_AND_BACK);
break;
default:
throw new UnsupportedOperationException(
"Unrecognized face cull mode: " + state.getFaceCullMode());
}
context.cullMode = state.getFaceCullMode();
}
if (state.getBlendMode() != context.blendMode) {
if (state.getBlendMode() == RenderState.BlendMode.Off) {
glDisable(GL_BLEND);
} else {
glEnable(GL_BLEND);
switch (state.getBlendMode()) {
case Off:
break;
case Additive:
glBlendFunc(GL_ONE, GL_ONE);
break;
case AlphaAdditive:
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
break;
case Color:
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_COLOR);
break;
case Alpha:
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
break;
case PremultAlpha:
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
break;
case Modulate:
glBlendFunc(GL_DST_COLOR, GL_ZERO);
break;
case ModulateX2:
glBlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
break;
default:
throw new UnsupportedOperationException(
"Unrecognized blend mode: " + state.getBlendMode());
}
}
context.blendMode = state.getBlendMode();
}
if (state.isStencilTest()) {
throw new UnsupportedOperationException(
"OpenGL 1.1 doesn't support two sided stencil operations.");
}
}
public void invalidateState() {
context.reset();
}
