private static void setupShadowFrameBuffer() {
if (shadowPassInterval <= 0) {
return;
}
setupShadowRenderTexture();
glDeleteFramebuffersEXT(sfb);
sfb = glGenFramebuffersEXT();
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sfb);
glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);
glDeleteRenderbuffersEXT(sfbDepthBuffer);
sfbDepthBuffer = glGenRenderbuffersEXT();
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, sfbDepthBuffer);
glRenderbufferStorageEXT(
GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, shadowMapWidth, shadowMapHeight);
glFramebufferRenderbufferEXT(
GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, sfbDepthBuffer);
glFramebufferTexture2DEXT(
GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, sfbDepthTexture, 0);
int status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
System.out.println("Failed creating shadow framebuffer! (Status " + status + ")");
}
}
public static void beginWeather() {
glEnable(GL_BLEND);
useProgram(Shaders.ProgramWeather);
if (isShadowPass) {
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); // will be set to sbf in endHand()
}
}
public static void endHand() {
glDisable(GL_BLEND);
useProgram(lightmapEnabled ? ProgramTexturedLit : ProgramTextured);
if (isShadowPass) {
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sfb); // was set to 0 in beginWeather()
}
}
public static void beginRender(Minecraft minecraft, float f, long l) {
if (isShadowPass) {
return;
}
mc = minecraft;
if (!isInitialized) {
init();
}
if (mc.displayWidth != renderWidth || mc.displayHeight != renderHeight) {
resize();
}
if (shadowPassInterval > 0 && --shadowPassCounter <= 0) {
// do shadow pass
preShadowPassThirdPersonView = mc.gameSettings.thirdPersonView;
mc.gameSettings.thirdPersonView = 1;
isShadowPass = true;
shadowPassCounter = shadowPassInterval;
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, sfb);
useProgram(ProgramNone);
mc.entityRenderer.renderWorld(f, l);
glFlush();
isShadowPass = false;
mc.gameSettings.thirdPersonView = preShadowPassThirdPersonView;
}
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, dfb);
useProgram(lightmapEnabled ? ProgramTexturedLit : ProgramTextured);
}
private static void setupFrameBuffer() {
setupRenderTextures();
if (dfb != 0) {
glDeleteFramebuffersEXT(dfb);
glDeleteRenderbuffersEXT(dfbRenderBuffers);
}
dfb = glGenFramebuffersEXT();
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, dfb);
glGenRenderbuffersEXT(dfbRenderBuffers);
for (int i = 0; i < colorAttachments; ++i) {
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, dfbRenderBuffers.get(i));
if (i == 1) { // depth buffer
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB32F_ARB, renderWidth, renderHeight);
} else {
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA, renderWidth, renderHeight);
}
glFramebufferRenderbufferEXT(
GL_FRAMEBUFFER_EXT, dfbDrawBuffers.get(i), GL_RENDERBUFFER_EXT, dfbRenderBuffers.get(i));
glFramebufferTexture2DEXT(
GL_FRAMEBUFFER_EXT, dfbDrawBuffers.get(i), GL_TEXTURE_2D, dfbTextures.get(i), 0);
}
glDeleteRenderbuffersEXT(dfbDepthBuffer);
dfbDepthBuffer = glGenRenderbuffersEXT();
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, dfbDepthBuffer);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, renderWidth, renderHeight);
glFramebufferRenderbufferEXT(
GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, dfbDepthBuffer);
int status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
System.out.println("Failed creating framebuffer! (Status " + status + ")");
}
}
public static void endRender() {
if (isShadowPass) {
return;
}
glPushMatrix();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glDisable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
// composite
glDisable(GL_BLEND);
useProgram(ProgramComposite);
glDrawBuffers(dfbDrawBuffers);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(0));
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(1));
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(2));
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(3));
if (colorAttachments >= 5) {
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(4));
if (colorAttachments >= 6) {
glActiveTexture(GL_TEXTURE5);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(5));
if (colorAttachments >= 7) {
glActiveTexture(GL_TEXTURE6);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(6));
}
}
}
if (shadowPassInterval > 0) {
glActiveTexture(GL_TEXTURE7);
glBindTexture(GL_TEXTURE_2D, sfbDepthTexture);
}
glActiveTexture(GL_TEXTURE0);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(0.0f, 0.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f);
glVertex3f(1.0f, 0.0f, 0.0f);
glTexCoord2f(1.0f, 1.0f);
glVertex3f(1.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 1.0f);
glVertex3f(0.0f, 1.0f, 0.0f);
glEnd();
// final
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
useProgram(ProgramFinal);
glClearColor(clearColor[0], clearColor[1], clearColor[2], 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(0));
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(1));
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(2));
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(3));
if (colorAttachments >= 5) {
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(4));
if (colorAttachments >= 6) {
glActiveTexture(GL_TEXTURE5);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(5));
if (colorAttachments >= 7) {
glActiveTexture(GL_TEXTURE6);
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(6));
}
}
}
if (shadowPassInterval > 0) {
glActiveTexture(GL_TEXTURE7);
glBindTexture(GL_TEXTURE_2D, sfbDepthTexture);
}
glActiveTexture(GL_TEXTURE0);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(0.0f, 0.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f);
glVertex3f(1.0f, 0.0f, 0.0f);
glTexCoord2f(1.0f, 1.0f);
glVertex3f(1.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 1.0f);
glVertex3f(0.0f, 1.0f, 0.0f);
glEnd();
glEnable(GL_BLEND);
glPopMatrix();
useProgram(ProgramNone);
}