////////////////////////////////////////////////////////////////////////////////
//
// Method: BindlessApp::draw()
//
// Performs the actual rendering
//
////////////////////////////////////////////////////////////////////////////////
void BindlessApp::draw(void)
{
nv::matrix4f modelviewMatrix;
glClearColor( 0.5, 0.5, 0.5, 1.0);
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
// Enable the vertex and pixel shader
m_shader->enable();
if (m_useBindlessTextures) {
GLuint samplersLocation(m_shader->getUniformLocation("samplers"));
glUniform1ui64vNV(samplersLocation, m_numTextures, m_textureHandles);
}
GLuint bBindlessTexture(m_shader->getUniformLocation("useBindless"));
glUniform1i(bBindlessTexture, m_useBindlessTextures);
GLuint currentTexture(m_shader->getUniformLocation("currentFrame"));
glUniform1i(currentTexture, m_currentFrame);
// Set up the transformation matices up
modelviewMatrix = m_transformer->getModelViewMat();
m_transformUniformsData.ModelView = modelviewMatrix;
m_transformUniformsData.ModelViewProjection= m_projectionMatrix * modelviewMatrix;
m_transformUniformsData.UseBindlessUniforms = m_useBindlessUniforms;
glBindBufferBase(GL_UNIFORM_BUFFER, 2, m_transformUniforms);
glNamedBufferSubDataEXT(m_transformUniforms, 0, sizeof(TransformUniforms), &m_transformUniformsData);
// If we are going to update the uniforms every frame, do it now
if(m_updateUniformsEveryFrame == true)
{
float deltaTime;
float dt;
deltaTime = getFrameDeltaTime();
if(deltaTime < m_minimumFrameDeltaTime)
{
m_minimumFrameDeltaTime = deltaTime;
}
dt = std::min(0.00005f / m_minimumFrameDeltaTime, .01f);
m_t += dt * (float)Mesh::m_drawCallsPerState;
updatePerMeshUniforms(m_t);
}
// Set up default per mesh uniforms. These may be changed on a per mesh basis in the rendering loop below
if(m_useBindlessUniforms == true)
{
// *** INTERESTING ***
// Pass a GPU pointer to the vertex shader for the per mesh uniform data via a vertex attribute
glVertexAttribI2i(m_bindlessPerMeshUniformsPtrAttribLocation,
(int)(m_perMeshUniformsGPUPtr & 0xFFFFFFFF),
(int)((m_perMeshUniformsGPUPtr >> 32) & 0xFFFFFFFF));
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_NVGPUShader5_nglUniform1ui64vNV__IIJ(JNIEnv *__env, jclass clazz, jint location, jint count, jlong valueAddress) {
glUniform1ui64vNVPROC glUniform1ui64vNV = (glUniform1ui64vNVPROC)tlsGetFunction(1954);
intptr_t value = (intptr_t)valueAddress;
UNUSED_PARAM(clazz)
glUniform1ui64vNV(location, count, value);
}
