void read(ByteBuffer buffer) {
EXTFramebufferObject.glBindFramebufferEXT(
EXTFramebufferObject.GL_FRAMEBUFFER_EXT, frameBuffer);
buffer.position(0);
GL11.glReadPixels(
x0, y0, width, height, MipmapHelper.TEX_FORMAT, MipmapHelper.TEX_DATA_TYPE, buffer);
}
void delete() {
if (!deleted) {
deleted = true;
if (ownTexture) {
GL11.glDeleteTextures(texture);
}
EXTFramebufferObject.glDeleteFramebuffersEXT(frameBuffer);
}
}
private FBO(int texture, boolean ownTexture, int x0, int y0, int width, int height) {
this.texture = texture;
this.ownTexture = ownTexture;
this.x0 = x0;
this.y0 = y0;
this.width = width;
this.height = height;
frameBuffer = EXTFramebufferObject.glGenFramebuffersEXT();
if (frameBuffer < 0) {
throw new RuntimeException("could not get framebuffer object");
}
GLAPI.glBindTexture(texture);
EXTFramebufferObject.glBindFramebufferEXT(
EXTFramebufferObject.GL_FRAMEBUFFER_EXT, frameBuffer);
EXTFramebufferObject.glFramebufferTexture2DEXT(
EXTFramebufferObject.GL_FRAMEBUFFER_EXT,
EXTFramebufferObject.GL_COLOR_ATTACHMENT0_EXT,
GL11.GL_TEXTURE_2D,
texture,
0);
}
void unbind() {
GL11.glPopAttrib();
GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glPopMatrix();
GL11.glMatrixMode(GL11.GL_MODELVIEW);
GL11.glPopMatrix();
if (lightmapEnabled) {
GL13.glActiveTexture(GL13.GL_TEXTURE1);
GL11.glEnable(GL11.GL_TEXTURE_2D);
GL13.glActiveTexture(GL13.GL_TEXTURE0);
}
GL11.glEnable(GL11.GL_BLEND);
GLAPI.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, 0);
}
void bind() {
EXTFramebufferObject.glBindFramebufferEXT(
EXTFramebufferObject.GL_FRAMEBUFFER_EXT, frameBuffer);
GL11.glPushAttrib(glAttributes);
GL11.glViewport(x0, y0, width, height);
GL11.glEnable(GL11.GL_SCISSOR_TEST);
GL11.glScissor(x0, y0, width, height);
lightmapEnabled = false;
if (gl13Supported) {
GL13.glActiveTexture(GL13.GL_TEXTURE1);
lightmapEnabled = GL11.glIsEnabled(GL11.GL_TEXTURE_2D);
if (lightmapEnabled) {
GL11.glDisable(GL11.GL_TEXTURE_2D);
}
GL13.glActiveTexture(GL13.GL_TEXTURE0);
}
GL11.glEnable(GL11.GL_TEXTURE_2D);
GL11.glDisable(GL11.GL_DEPTH_TEST);
GLAPI.glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
GL11.glDisable(GL11.GL_LIGHTING);
GL11.glEnable(GL11.GL_ALPHA_TEST);
GLAPI.glAlphaFunc(GL11.GL_GREATER, 0.01f);
if (useGL13) {
GL11.glDisable(GL13.GL_MULTISAMPLE);
}
GLAPI.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glPushMatrix();
GL11.glLoadIdentity();
GL11.glOrtho(-1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f);
GL11.glMatrixMode(GL11.GL_MODELVIEW);
GL11.glPushMatrix();
GL11.glLoadIdentity();
}
public static boolean update(TextureAtlasSprite icon, boolean itemFrameRenderer) {
if (!initialized) {
logger.finer("deferring %s update until initialization finishes", IconAPI.getIconName(icon));
return false;
}
if (!active) {
return false;
}
int oldFB = GL11.glGetInteger(EXTFramebufferObject.GL_FRAMEBUFFER_BINDING_EXT);
if (oldFB != 0 && warnCount < 10) {
logger.finer(
"rendering %s while non-default framebuffer %d is active",
IconAPI.getIconName(icon), oldFB);
warnCount++;
}
int oldTexture = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
try {
FancyDial instance = getInstance(icon);
return instance != null && instance.render(itemFrameRenderer);
} finally {
EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, oldFB);
GLAPI.glBindTexture(oldTexture);
}
}
