Example usage for org.lwjgl.opengl NVDrawTexture glDrawTextureNV

Introduction

In this page you can find the example usage for org.lwjgl.opengl NVDrawTexture glDrawTextureNV.

Prototype

public static native void glDrawTextureNV(@NativeType("GLuint") int texture, @NativeType("GLuint") int sampler,
            @NativeType("GLfloat") float x0, @NativeType("GLfloat") float y0, @NativeType("GLfloat") float x1,
            @NativeType("GLfloat") float y1, @NativeType("GLfloat") float z, @NativeType("GLfloat") float s0,
            @NativeType("GLfloat") float t0, @NativeType("GLfloat") float s1, @NativeType("GLfloat") float t1);

Source Link

Usage

From source file:org.lwjgl.demo.opengl.raytracing.DemoSsboTrianglesStacklessKdTree.java

License:Open Source License

/**
 * Present the final image on the screen/viewport.
 *//*from w w w . jav  a2  s  .  c  o m*/
void present() {
    if (caps.GL_NV_draw_texture) {
        /*
         * Use some fancy NV extension to draw a screen-aligned textured quad without needing a VAO/VBO or a shader.
         */
        NVDrawTexture.glDrawTextureNV(raytraceTexture, sampler, 0.0f, 0.0f, width, height, 0.0f, 0.0f, 0.0f,
                1.0f, 1.0f);
    } else {
        /*
         * Draw a full-screen quad using the VAO and shader.
         */
        glUseProgram(quadProgram);
        glBindVertexArray(vao);
        glBindTexture(GL_TEXTURE_2D, raytraceTexture);
        glBindSampler(0, this.sampler);
        glDrawArrays(GL_TRIANGLES, 0, 6);
        glBindSampler(0, 0);
        glBindTexture(GL_TEXTURE_2D, 0);
        glBindVertexArray(0);
        glUseProgram(0);
    }
}

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From source file:org.lwjgl.demo.opengl.raytracing.HybridDemoSsboTriangles.java

License:Open Source License

/**
 * Present the final image on the screen/viewport.
 *//* ww w. j  a v  a  2s .  com*/
private void present() {
    glDisable(GL_DEPTH_TEST);
    if (caps.GL_NV_draw_texture) {
        /*
         * Use some fancy NV extension to draw a screen-aligned textured
         * quad without needing a VAO/VBO or a shader.
         */
        NVDrawTexture.glDrawTextureNV(raytraceTexture, sampler, 0.0f, 0.0f, width, height, 0.0f, 0.0f, 0.0f,
                1.0f, 1.0f);
    } else {
        /*
         * Draw a full-screen quad using the VAO and shader.
         */
        glUseProgram(quadProgram);
        glBindVertexArray(vao);
        glBindTexture(GL_TEXTURE_2D, raytraceTexture);
        glBindSampler(0, this.sampler);
        glDrawArrays(GL_TRIANGLES, 0, 6);
        glBindSampler(0, 0);
        glBindTexture(GL_TEXTURE_2D, 0);
        glBindVertexArray(0);
        glUseProgram(0);
    }
}

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From source file:org.lwjgl.demo.opengl.raytracing.TransformFeedbackDemo.java

License:Open Source License

/**
 * Present the final image on the screen/viewport.
 *///  ww w .j av a2 s.  co m
void present() {
    if (caps.GL_NV_draw_texture) {
        /*
         * Use some fancy NV extension to draw a screen-aligned textured quad without needing a VAO/VBO or a shader.
         */
        NVDrawTexture.glDrawTextureNV(raytraceTexture, sampler, 0.0f, 0.0f, width, height, 0.0f, 0.0f, 0.0f,
                1.0f, 1.0f);
    } else {
        /*
         * Draw the rendered image on the screen using textured full-screen quad.
         */
        glUseProgram(quadProgram);
        glBindVertexArray(fullScreenVao);
        glBindTexture(GL_TEXTURE_2D, raytraceTexture);
        glBindSampler(0, this.sampler);
        glDrawArrays(GL_TRIANGLES, 0, 6);
        glBindSampler(0, 0);
        glBindTexture(GL_TEXTURE_2D, 0);
        glBindVertexArray(0);
        glUseProgram(0);
    }
}

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