Java GL20.glUseProgram方法代碼示例

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
/**
 * Cleanup
 */
public void destroy() {
	GL20.glUseProgram(0);

	// Delete the shaders
	for (Shader shader : shaders) {
		GL20.glDetachShader(id, shader.id);
		shader.destroy();
	}

	// Delete the program
	GL20.glDeleteProgram(id);
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
public static void glUseProgram(int program)
{
    if (arbShaders)
    {
        ARBShaderObjects.glUseProgramObjectARB(program);
    }
    else
    {
        GL20.glUseProgram(program);
    }
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
public void start() {
	GL20.glUseProgram(programID);
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
public void stop() {
	GL20.glUseProgram(0);
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
public static void runShader() {
	Minecraft mc = Minecraft.getMinecraft();
	
	//TODO remove
	if (Keyboard.isKeyDown(Keyboard.KEY_NUMPAD5)) {
		destroyShader();
		createShader();
	}
	
	//Use shader program
	GL20.glUseProgram(shader.getShaderProgram());
	
	//TODO third person view
	Entity entity = mc.getRenderViewEntity();
	float partialTicks = mc.getRenderPartialTicks();
	double entityPosX = entity.lastTickPosX + (entity.posX - entity.lastTickPosX) * (double)partialTicks;
       double entityPosY = entity.lastTickPosY + entity.getEyeHeight() + (entity.posY - entity.lastTickPosY) * (double)partialTicks;
       double entityPosZ = entity.lastTickPosZ + (entity.posZ - entity.lastTickPosZ) * (double)partialTicks;
       float fov = (float) Math.toRadians(mc.entityRenderer.getFOVModifier(partialTicks, true));
	
	//Set uniform values
	int texUniform = GL20.glGetUniformLocation(shader.getShaderProgram(), "tex");
	GL20.glUniform1i(texUniform, 0);
	int cameraPosUniform = GL20.glGetUniformLocation(shader.getShaderProgram(), "cameraPos");
	GL20.glUniform3f(cameraPosUniform, (float)entityPosX%16, (float)entityPosY%16, (float)entityPosZ%16);
	int cameraDirUniform = GL20.glGetUniformLocation(shader.getShaderProgram(), "cameraDir");
	GL20.glUniform3f(cameraDirUniform, -(float)Math.toRadians(entity.rotationPitch), (float)Math.toRadians(180+entity.rotationYaw), 0);
	int fovyUniform = GL20.glGetUniformLocation(shader.getShaderProgram(), "fovy");
	GL20.glUniform1f(fovyUniform, fov);
	int fovxUniform = GL20.glGetUniformLocation(shader.getShaderProgram(), "fovx");
	GL20.glUniform1f(fovxUniform, fov*Display.getWidth()/(float)Display.getHeight());
	int sphericalUniform = GL20.glGetUniformLocation(shader.getShaderProgram(), "spherical");
	GL20.glUniform1i(sphericalUniform, RayTracerSettings.spherical ? 1 : 0);
	int stereoscopicUniform = GL20.glGetUniformLocation(shader.getShaderProgram(), "stereoscopic3d");
	GL20.glUniform1i(stereoscopicUniform, RayTracerSettings.stereoscopic ? 1 : 0);
	int eyeWidthUniform = GL20.glGetUniformLocation(shader.getShaderProgram(), "eyeWidth");
	GL20.glUniform1f(eyeWidthUniform, 0.063f); //TODO input eyeWidth option
	
	if (!pauseRendering) {
		if (worldLoader == null) {
			worldLoader = new WorldLoader();
		}
		if (worldLoader.dimension != mc.world.provider.getDimension()) {
			worldLoader.dimension = mc.world.provider.getDimension();
		}
		worldLoader.updateWorld(entityPosX, entityPosY, entityPosZ, shader);

		//Setup view
		GL11.glMatrixMode(GL11.GL_PROJECTION);
		GL11.glPushMatrix();
		GL11.glLoadIdentity();
		GL11.glOrtho(-1, 1, -1, 1, -1, 1);
		GL11.glMatrixMode(GL11.GL_MODELVIEW);
		GL11.glPushMatrix();
		GL11.glLoadIdentity();

		//Bind vbo and texture
		GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, shader.getVbo());
		GL20.glEnableVertexAttribArray(0);
		GL20.glVertexAttribPointer(0, 2, GL11.GL_BYTE, false, 0, 0L);
		GL11.glBindTexture(GL11.GL_TEXTURE_2D, 8);

		//Render
		GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, 6);

		//Reset vbo and texture
		GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
		GL20.glDisableVertexAttribArray(0);
		GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);

		//Reset view
		GL11.glMatrixMode(GL11.GL_PROJECTION);
		GL11.glPopMatrix();
		GL11.glMatrixMode(GL11.GL_MODELVIEW);
		GL11.glPopMatrix();
	}
	
	//Stop using shader program
	GL20.glUseProgram(0);
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
/**
    * Unbinds this shader
    */
   public void unbind() {
GL20.glUseProgram(0);
   }
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
public void cleanUp() {
	GL20.glUseProgram(0);
	GL20.glDeleteProgram(programID);
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
/**
 * Used to activate the current shader
 */
public void bind() {
	GL20.glUseProgram(program);
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
public void stop() {
    GL20.glUseProgram(0);
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
/**
 * Starts shader program.
 */
public void start() {
    GL20.glUseProgram(programID);
}
 

import org.lwjgl.opengl.GL20; //導入方法依賴的package包/類
public void start() {
    GL20.glUseProgram(programID);
}