void ViewportArrayApplication::Display(bool auto_redraw)
{
float t = float(GetTickCount() & 0x3FFF) / float(0x3FFF);
static const vmath::vec3 X(1.0f, 0.0f, 0.0f);
static const vmath::vec3 Y(0.0f, 1.0f, 0.0f);
static const vmath::vec3 Z(0.0f, 0.0f, 1.0f);
glDisable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClearDepth(1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(sort_prog);
vmath::mat4 p(vmath::frustum(-1.0f, 1.0f, aspect, -aspect, 1.0f, 5000.0f));
vmath::mat4 m;
m = vmath::mat4(vmath::translate(0.0f,
0.0f,
100.0f * sinf(6.28318531f * t) - 230.0f) *
vmath::rotate(360.0f * t, X) *
vmath::rotate(360.0f * t * 2.0f, Y) *
vmath::rotate(360.0f * t * 5.0f, Z) *
vmath::translate(0.0f, -80.0f, 0.0f));
glUniformMatrix4fv(model_matrix_pos, 1, GL_FALSE, m[0]);
glUniformMatrix4fv(projection_matrix_pos, 1, GL_FALSE, p);
glEnable(GL_RASTERIZER_DISCARD);
glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, xfb);
glBeginTransformFeedback(GL_POINTS);
object.Render();
glEndTransformFeedback();
glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, 0);
glDisable(GL_RASTERIZER_DISCARD);
static const vmath::vec4 colors[2] =
{
vmath::vec4(0.8f, 0.8f, 0.9f, 0.5f),
vmath::vec4(0.3f, 1.0f, 0.3f, 0.8f)
};
glUseProgram(render_prog);
glUniform4fv(0, 1, colors[0]);
glBindVertexArray(vao[0]);
glDrawTransformFeedbackStream(GL_TRIANGLES, xfb, 0);
glUniform4fv(0, 1, colors[1]);
glBindVertexArray(vao[1]);
glDrawTransformFeedbackStream(GL_TRIANGLES, xfb, 1);
base::Display();
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL40_nglDrawTransformFeedbackStream(JNIEnv *__env, jclass clazz, jint mode, jint id, jint stream, jlong __functionAddress) {
glDrawTransformFeedbackStreamPROC glDrawTransformFeedbackStream = (glDrawTransformFeedbackStreamPROC)(intptr_t)__functionAddress;
UNUSED_PARAMS(__env, clazz)
glDrawTransformFeedbackStream(mode, id, stream);
}
