public static void beginWater() {
useProgram(Shaders.ProgramWater);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, mc.renderEngine.getTexture("/terrain_nh.png"));
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, mc.renderEngine.getTexture("/terrain_s.png"));
glActiveTexture(GL_TEXTURE0);
}
public static void beginTerrain() {
useProgram(Shaders.ProgramTerrain);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, mc.renderEngine.getTexture("/terrain_nh.png"));
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, mc.renderEngine.getTexture("/terrain_s.png"));
glActiveTexture(GL_TEXTURE0);
FloatBuffer projection = BufferUtils.createFloatBuffer(16);
}
private static void setupShadowRenderTexture() {
if (shadowPassInterval <= 0) {
return;
}
// depth
glDeleteTextures(sfbDepthTexture);
sfbDepthTexture = glGenTextures();
glBindTexture(GL_TEXTURE_2D, sfbDepthTexture);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
ByteBuffer buffer = ByteBuffer.allocateDirect(shadowMapWidth * shadowMapHeight * 4);
glTexImage2D(
GL_TEXTURE_2D,
0,
GL_DEPTH_COMPONENT,
shadowMapWidth,
shadowMapHeight,
0,
GL_DEPTH_COMPONENT,
GL11.GL_FLOAT,
buffer);
}
private static void setupRenderTextures() {
glDeleteTextures(dfbTextures);
glGenTextures(dfbTextures);
for (int i = 0; i < colorAttachments; ++i) {
glBindTexture(GL_TEXTURE_2D, dfbTextures.get(i));
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (i == 1) { // depth buffer
ByteBuffer buffer = ByteBuffer.allocateDirect(renderWidth * renderHeight * 4 * 4);
glTexImage2D(
GL_TEXTURE_2D,
0,
GL_RGB32F_ARB,
renderWidth,
renderHeight,
0,
GL_RGBA,
GL11.GL_FLOAT,
buffer);
} else {
ByteBuffer buffer = ByteBuffer.allocateDirect(renderWidth * renderHeight * 4);
glTexImage2D(
GL_TEXTURE_2D,
0,
GL_RGBA,
renderWidth,
renderHeight,
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
buffer);
}
}
}
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);
}