// display results using OpenGL (called by GLUT)
void display()
{
sdkStartTimer(&timer);
// map PBO to get CUDA device pointer
uchar4 *d_output;
checkCudaErrors(cudaGraphicsMapResources(1, &cuda_pbo_resource, 0));
size_t num_bytes;
checkCudaErrors(cudaGraphicsResourceGetMappedPointer((void **)&d_output, &num_bytes,
cuda_pbo_resource));
render(imageWidth, imageHeight, tx, ty, scale, cx, cy,
blockSize, gridSize, g_FilterMode, d_output);
checkCudaErrors(cudaGraphicsUnmapResources(1, &cuda_pbo_resource, 0));
// Common display path
{
// display results
glClear(GL_COLOR_BUFFER_BIT);
#if USE_BUFFER_TEX
// display using buffer texture
glBindTexture(GL_TEXTURE_BUFFER_EXT, bufferTex);
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, fprog);
glEnable(GL_FRAGMENT_PROGRAM_ARB);
glProgramLocalParameterI4iNV(GL_FRAGMENT_PROGRAM_ARB, 0, width, 0, 0, 0);
#else
// download image from PBO to OpenGL texture
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
glBindTexture(GL_TEXTURE_TYPE, displayTex);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glTexSubImage2D(GL_TEXTURE_TYPE,
0, 0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
glEnable(GL_TEXTURE_TYPE);
#endif
// draw textured quad
glDisable(GL_DEPTH_TEST);
glBegin(GL_QUADS);
glTexCoord2f(0.0f , (GLfloat)height);
glVertex2f(0.0f, 0.0f);
glTexCoord2f((GLfloat)width, (GLfloat)height);
glVertex2f(1.0f, 0.0f);
glTexCoord2f((GLfloat)width, 0.0f);
glVertex2f(1.0f, 1.0f);
glTexCoord2f(0.0f , 0.0f);
glVertex2f(0.0f, 1.0f);
glEnd();
glDisable(GL_TEXTURE_TYPE);
glDisable(GL_FRAGMENT_PROGRAM_ARB);
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
if (drawCurves)
{
// draw spline curves
glPushMatrix();
glScalef(0.25, 0.25, 1.0);
glTranslatef(0.0, 2.0, 0.0);
glColor3f(1.0, 0.0, 0.0);
plotCurve(bspline_w3);
glTranslatef(1.0, 0.0, 0.0);
glColor3f(0.0, 1.0, 0.0);
plotCurve(bspline_w2);
glTranslatef(1.0, 0.0, 0.0);
glColor3f(0.0, 0.0, 1.0);
plotCurve(bspline_w1);
glTranslatef(1.0, 0.0, 0.0);
glColor3f(1.0, 0.0, 1.0);
plotCurve(bspline_w0);
glPopMatrix();
glColor3f(1.0, 1.0, 1.0);
}
}
glutSwapBuffers();
glutReportErrors();
sdkStopTimer(&timer);
computeFPS();
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_NVGpuProgram4_nglProgramLocalParameterI4iNV(JNIEnv *env, jclass clazz, jint target, jint index, jint x, jint y, jint z, jint w, jlong function_pointer) {
glProgramLocalParameterI4iNVPROC glProgramLocalParameterI4iNV = (glProgramLocalParameterI4iNVPROC)((intptr_t)function_pointer);
glProgramLocalParameterI4iNV(target, index, x, y, z, w);
}
