void FramebufferObject::detachTexture(GLenum attachment) {
size_t index = decodeAttachment(attachment);
if (attachments_[index] != 0) {
switch (attachments_[index]->getType()) {
case GL_TEXTURE_1D:
glFramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_1D, 0, 0);
break;
case GL_TEXTURE_2D_ARRAY:
glFramebufferTextureLayerEXT(GL_FRAMEBUFFER_EXT, attachment, 0, 0, 0);
break;
case GL_TEXTURE_3D:
glFramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_3D, 0, 0, 0);
break;
default: // GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_2D, 0, 0);
break;
}
attachments_[index] = 0;
LGL_ERROR;
if (index < CGT_FRAMEBUFFEROBJECT_MAX_SUPPORTED_COLOR_ATTACHMENTS)
--numColorAttachments_;
}
else {
LWARNING("Trying to detach unknown texture!");
}
}
void FramebufferObject::attachTexture(Texture* texture, GLenum attachment, int mipLevel, int zSlice)
{
switch(texture->getType()) {
case GL_TEXTURE_1D:
glFramebufferTexture1DEXT( GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_1D, texture->getId(), mipLevel );
break;
case GL_TEXTURE_3D:
glFramebufferTexture3DEXT( GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_3D, texture->getId(), mipLevel, zSlice );
break;
case GL_TEXTURE_2D_ARRAY:
glFramebufferTextureLayerEXT( GL_FRAMEBUFFER_EXT, attachment, texture->getId(), mipLevel, zSlice );
break;
default: //GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE
glFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, attachment, texture->getType(), texture->getId(), mipLevel );
break;
}
LGL_ERROR;
size_t index = decodeAttachment(attachment);
attachments_[index] = texture;
if (index < CGT_FRAMEBUFFEROBJECT_MAX_SUPPORTED_COLOR_ATTACHMENTS)
++numColorAttachments_;
#ifdef CAMPVIS_DEBUG
this->isComplete();
#endif
}
/*
=================
R_AttachFBOTexture3D
=================
*/
void R_AttachFBOTexture3D( int texId, int index, int zOffset )
{
if ( index < 0 || index >= glConfig2.maxColorAttachments )
{
ri.Printf( PRINT_WARNING, "R_AttachFBOTexture3D: invalid attachment index %i\n", index );
return;
}
glFramebufferTexture3DEXT( GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT + index, GL_TEXTURE_3D_EXT, texId, 0, zOffset );
}
/**
* Deallocation of a buffer.
*/
void SoXipFbo::attachDepth()
{
// Attach new depth buffer
if (mFboOut.depthStorage == GL_TEXTURE_2D)
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, mFboOut.depthHandle, 0);
else if (mFboOut.depthStorage == GL_TEXTURE_3D)
glFramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_3D, mFboOut.depthHandle, 0, 0);
else if (mFboOut.depthStorage == GL_RENDERBUFFER_EXT)
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mFboOut.depthHandle);
}
/**
* Attaches a GL texture to the framebuffer
*/
void FBO::AttachTexture(const GLuint texId, const GLenum texTarget, const GLenum attachment, const int mipLevel, const int zSlice )
{
if (texTarget == GL_TEXTURE_1D) {
glFramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_1D, texId, mipLevel);
} else if (texTarget == GL_TEXTURE_3D) {
glFramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_3D, texId, mipLevel, zSlice);
} else {
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, attachment, texTarget, texId, mipLevel);
}
}
static int
create_3d_fbo(void)
{
GLuint tex, fb;
GLenum status;
int depth;
pot_depth = piglit_is_extension_supported("GL_ARB_texture_non_power_of_two") ?
NUM_DEPTHS: POT_DEPTHS;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_3D, tex);
/* allocate empty 3D texture */
glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA,
BUF_WIDTH, BUF_HEIGHT, pot_depth,
0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
assert(glGetError() == 0);
glGenFramebuffersEXT(1, &fb);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
/* draw something into each slice of the 3D texture */
for (depth = 0; depth < NUM_DEPTHS; depth++) {
glFramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_3D,
tex,
0,
depth);
assert(glGetError() == 0);
status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
fprintf(stderr, "FBO incomplete\n");
goto done;
}
glViewport(0, 0, BUF_WIDTH, BUF_HEIGHT);
piglit_ortho_projection(BUF_WIDTH, BUF_HEIGHT, GL_FALSE);
/* solid color quad */
glColor4fv(depth_color[depth]);
piglit_draw_rect(-2, -2, BUF_WIDTH + 2, BUF_HEIGHT + 2);
}
done:
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
glDeleteFramebuffersEXT(1, &fb);
return tex;
}
void FramebufferObject::attachTexture(Texture* texture, GLenum attachment, int mipLevel, int zSlice)
{
switch (texture->getType()) {
case GL_TEXTURE_1D:
glFramebufferTexture1DEXT(GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_1D, texture->getId(), mipLevel);
break;
case GL_TEXTURE_3D:
glFramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_3D, texture->getId(), mipLevel, zSlice);
break;
case GL_TEXTURE_2D_ARRAY_EXT:
glFramebufferTextureLayerEXT(GL_FRAMEBUFFER_EXT, attachment, texture->getId(), mipLevel, zSlice);
break;
default: //GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, attachment, texture->getType(), texture->getId(), mipLevel);
break;
}
attachedTextures_[attachment] = texture;
}
// attach the texture to a FBO
void
CFrameBufferObject::attachTexture( GLenum texTarget, GLuint texId,
GLenum attachment, int mipLevel, int zSlice )
{
bindRenderPath();
switch (texTarget) {
case GL_TEXTURE_1D:
glFramebufferTexture1DEXT( GL_FRAMEBUFFER_EXT, attachment,
GL_TEXTURE_1D, texId, mipLevel );
break;
case GL_TEXTURE_3D:
glFramebufferTexture3DEXT( GL_FRAMEBUFFER_EXT, attachment,
GL_TEXTURE_3D, texId, mipLevel, zSlice );
break;
default:
// Default is GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_ARB, or cube faces
glFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, attachment,
texTarget, texId, mipLevel );
break;
}
unbindRenderPath();
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_EXTFramebufferObject_glFramebufferTexture3DEXT(JNIEnv *__env, jclass clazz, jint target, jint attachment, jint textarget, jint texture, jint level, jint zoffset) {
glFramebufferTexture3DEXTPROC glFramebufferTexture3DEXT = (glFramebufferTexture3DEXTPROC)tlsGetFunction(1711);
UNUSED_PARAM(clazz)
glFramebufferTexture3DEXT(target, attachment, textarget, texture, level, zoffset);
}
void frame_buffer_texture3D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset) {
glFramebufferTexture3DEXT(target, attachment, textarget, texture, level, zoffset);
CHECK_GL_ERROR();
}
void LightVolumeGL::process() {
bool lightColorChanged = false;
if (lightSource_.isChanged()) {
lightColorChanged = lightSourceChanged();
}
bool reattach = false;
if (internalVolumesInvalid_ || lightColorChanged || inport_.isChanged()) {
reattach = volumeChanged(lightColorChanged);
}
VolumeGL* outVolumeGL = volume_->getEditableRepresentation<VolumeGL>();
TextureUnit volUnit;
const VolumeGL* inVolumeGL = inport_.getData()->getRepresentation<VolumeGL>();
inVolumeGL->bindTexture(volUnit.getEnum());
TextureUnit transFuncUnit;
const Layer* tfLayer = transferFunction_.get().getData();
const LayerGL* transferFunctionGL = tfLayer->getRepresentation<LayerGL>();
transferFunctionGL->bindTexture(transFuncUnit.getEnum());
TextureUnit lightVolUnit[2];
propParams_[0].vol->bindTexture(lightVolUnit[0].getEnum());
propParams_[1].vol->bindTexture(lightVolUnit[1].getEnum());
propagationShader_.activate();
propagationShader_.setUniform("volume_", volUnit.getUnitNumber());
utilgl::setShaderUniforms(propagationShader_, *inport_.getData(), "volumeParameters_");
propagationShader_.setUniform("transferFunc_", transFuncUnit.getUnitNumber());
propagationShader_.setUniform("lightVolumeParameters_.dimensions", volumeDimOutF_);
propagationShader_.setUniform("lightVolumeParameters_.reciprocalDimensions", volumeDimOutFRCP_);
BufferObjectArray* rectArray = utilgl::enableImagePlaneRect();
//Perform propagation passes
for (int i=0; i<2; ++i) {
propParams_[i].fbo->activate();
glViewport(0, 0, static_cast<GLsizei>(volumeDimOut_.x), static_cast<GLsizei>(volumeDimOut_.y));
if (reattach)
propParams_[i].fbo->attachColorTexture(propParams_[i].vol->getTexture().get(), 0);
propagationShader_.setUniform("lightVolume_", lightVolUnit[i].getUnitNumber());
propagationShader_.setUniform("permutationMatrix_", propParams_[i].axisPermutation);
if (lightSource_.getData()->getLightSourceType() == LightSourceType::LIGHT_POINT) {
propagationShader_.setUniform("lightPos_", lightPos_);
propagationShader_.setUniform("permutedLightMatrix_", propParams_[i].axisPermutationLight);
}
else {
propagationShader_.setUniform("permutedLightDirection_", propParams_[i].permutedLightDirection);
}
for (unsigned int z=0; z<volumeDimOut_.z; ++z) {
glFramebufferTexture3DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_3D, propParams_[i].vol->getTexture()->getID(), 0, z);
propagationShader_.setUniform("sliceNum_", static_cast<GLint>(z));
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glFlush();
}
propParams_[i].fbo->deactivate();
}
utilgl::disableImagePlaneRect(rectArray);
propagationShader_.deactivate();
mergeShader_.activate();
mergeShader_.setUniform("lightVolume_", lightVolUnit[0].getUnitNumber());
mergeShader_.setUniform("lightVolumeSec_", lightVolUnit[1].getUnitNumber());
mergeShader_.setUniform("lightVolumeParameters_.dimensions", volumeDimOutF_);
mergeShader_.setUniform("lightVolumeParameters_.reciprocalDimensions", volumeDimOutFRCP_);
mergeShader_.setUniform("permMatInv_", propParams_[0].axisPermutationINV);
mergeShader_.setUniform("permMatInvSec_", propParams_[1].axisPermutationINV);
mergeShader_.setUniform("blendingFactor_", blendingFactor_);
//Perform merge pass
mergeFBO_->activate();
glViewport(0, 0, static_cast<GLsizei>(volumeDimOut_.x), static_cast<GLsizei>(volumeDimOut_.y));
if (reattach)
mergeFBO_->attachColorTexture(outVolumeGL->getTexture().get(), 0);
utilgl::multiDrawImagePlaneRect(static_cast<int>(volumeDimOut_.z));
mergeShader_.deactivate();
mergeFBO_->deactivate();
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_EXTFramebufferObject_nglFramebufferTexture3DEXT(JNIEnv *env, jclass clazz, jint target, jint attachment, jint textarget, jint texture, jint level, jint zoffset, jlong function_pointer) {
glFramebufferTexture3DEXTPROC glFramebufferTexture3DEXT = (glFramebufferTexture3DEXTPROC)((intptr_t)function_pointer);
glFramebufferTexture3DEXT(target, attachment, textarget, texture, level, zoffset);
}