void OVR_Present(qboolean loading)
{
int fade = vr_ovr_distortion_fade->value != 0.0f;
float desaturate = 0.0;
if (positionTracked && trackingState.StatusFlags & ovrStatus_PositionConnected && vr_ovr_trackingloss->value > 0) {
if (hasPositionLock) {
float yawDiff = (fabsf(cameraYaw) - 105.0f) * 0.04;
float xBound,yBound,zBound;
vec_t temp[4][4], fin[4][4];
int i = 0;
vec3_t euler;
vec4_t pos = {0.0,0.0,0.0,1.0};
vec4_t out = {0,0,0,0};
ovrPosef camera, head;
vec4_t quat;
camera = trackingState.CameraPose;
head = trackingState.HeadPose.ThePose;
pos[0] = -(head.Position.x - camera.Position.x);
pos[1] = head.Position.y - camera.Position.y;
pos[2] = -(head.Position.z - camera.Position.z);
VR_OVR_QuatToEuler(camera.Orientation,euler);
EulerToQuat(euler,quat);
QuatToRotation(quat,temp);
MatrixMultiply (cameraFrustum,temp,fin);
for (i=0; i<4; i++) {
out[i] = fin[i][0]*pos[0] + fin[i][1]*pos[1] + fin[i][2]*pos[2] + fin[i][3]*pos[3];
}
xBound = (fabsf(out[0]) - 0.6f) * 6.25f;
yBound = (fabsf(out[1]) - 0.45f) * 6.25f;
zBound = (fabsf(out[2] - 0.5f) - 0.5f) * 10.0f;
yawDiff = clamp(yawDiff,0.0,1.0);
xBound = clamp(xBound,0.0,1.0);
yBound = clamp(yBound,0.0,1.0);
zBound = clamp(zBound,0.0,1.0);
desaturate = max(max(max(xBound,yBound),zBound),yawDiff);
} else {
desaturate = 1.0;
}
}
GL_ClearColor(0.0, 0.0, 0.0, 1.0);
R_Clear();
GL_SetDefaultClearColor();
{
int i = 0;
r_ovr_shader_t *currentShader;
qboolean warp =(qboolean) (!loading && withinFrame && vr_ovr_timewarp->value);
if (warp)
{
currentShader = &ovr_timewarp_shaders[useChroma];
ovr_WaitTillTime(frameTime.TimewarpPointSeconds);
} else {
currentShader = &ovr_distortion_shaders[useChroma];
}
glDisableClientState (GL_COLOR_ARRAY);
glDisableClientState (GL_TEXTURE_COORD_ARRAY);
glDisableClientState (GL_VERTEX_ARRAY);
glEnableVertexAttribArray (0);
glEnableVertexAttribArray (1);
glEnableVertexAttribArray (2);
glEnableVertexAttribArray (3);
glEnableVertexAttribArray (4);
glUseProgram(currentShader->shader->program);
if (hmd->Type >= ovrHmd_DK2 && vr_ovr_lumoverdrive->value)
{
int lastFrame = (currentFrame ? 0 : 1);
static float overdriveScaleRegularRise = 0.1f;
static float overdriveScaleRegularFall = 0.05f; // falling issues are hardly visible
GL_MBind(1,offscreen[lastFrame].texture);
glUniform2f(currentShader->uniform.OverdriveScales,overdriveScaleRegularRise, overdriveScaleRegularFall);
} else {
glUniform2f(currentShader->uniform.OverdriveScales,0,0);
}
glUniform2f(currentShader->uniform.InverseResolution,1.0/glState.currentFBO->width,1.0/glState.currentFBO->height);
glUniform1i(currentShader->uniform.VignetteFade,fade);
glUniform1f(currentShader->uniform.Desaturate, desaturate);
for (i = 0; i < 2; i++)
{
// hook for rendering in different order
int eye = i;
GL_MBind(0,renderInfo[eye].eyeFBO.texture);
R_BindIVBO(&renderInfo[eye].eye,distortion_attribs,5);
glUniform2f(currentShader->uniform.EyeToSourceUVScale,
renderInfo[eye].UVScaleOffset[0].x, renderInfo[eye].UVScaleOffset[0].y);
glUniform2f(currentShader->uniform.EyeToSourceUVOffset,
renderInfo[eye].UVScaleOffset[1].x, renderInfo[eye].UVScaleOffset[1].y);
if (warp)
{
ovrPosef framePose = trackingState.HeadPose.ThePose;
ovrMatrix4f timeWarpMatrices[2];
ovrHmd_GetEyeTimewarpMatrices(hmd, (ovrEyeType)eye, framePose, timeWarpMatrices);
glUniformMatrix4fv(currentShader->uniform.EyeRotationStart,1,GL_TRUE,(GLfloat *) timeWarpMatrices[0].M);
glUniformMatrix4fv(currentShader->uniform.EyeRotationEnd,1,GL_TRUE,(GLfloat *) timeWarpMatrices[1].M);
}
R_DrawIVBO(&renderInfo[eye].eye);
R_ReleaseIVBO();
}
if (vr_ovr_lumoverdrive->value)
{
GL_MBind(1,0);
currentFrame = (currentFrame ? 0 : 1);
}
GL_MBind(0,0);
glUseProgram(0);
glDisableVertexAttribArray (0);
glDisableVertexAttribArray (1);
glDisableVertexAttribArray (2);
glDisableVertexAttribArray (3);
glDisableVertexAttribArray (4);
glEnableClientState (GL_COLOR_ARRAY);
glEnableClientState (GL_TEXTURE_COORD_ARRAY);
glEnableClientState (GL_VERTEX_ARRAY);
// glTexCoordPointer (2, GL_FLOAT, sizeof(texCoordArray[0][0]), texCoordArray[0][0]);
// glVertexPointer (3, GL_FLOAT, sizeof(vertexArray[0]), vertexArray[0]);
}
}
void R_VR_DrawHud()
{
float fov = vr_hud_fov->value;
float depth = vr_hud_depth->value;
int numsegments = vr_hud_segments->value;
int index = 0;
vec_t mat[4][4], temp[4][4];
if (!vr_enabled->value)
return;
// enable alpha testing so only pixels that have alpha info get written out
// prevents black pixels from being rendered into the view
GL_Enable(GL_ALPHA_TEST);
GL_AlphaFunc(GL_GREATER, 0.0f);
// if hud transparency is enabled, enable blending
if (vr_hud_transparency->value)
{
GL_Enable(GL_BLEND);
GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
// bind the texture
GL_MBind(0, hud.texture);
// disable this for the loading screens since they are not at 60fps
if ((vr_hud_bounce->value > 0) && !loadingScreen && ((int32_t) vr_aimmode->value > 0))
{
// load the quaternion directly into a rotation matrix
vec4_t q;
VR_GetOrientationEMAQuat(q);
q[2] = -q[2];
QuatToRotation(q, mat);
} else {
// identity matrix
TranslationMatrix(0,0,0,mat);
}
// set proper mode
// glEnableClientState (GL_TEXTURE_COORD_ARRAY);
// glEnableClientState (GL_VERTEX_ARRAY);
glDisableClientState (GL_COLOR_ARRAY);
// bind vertex buffer and set tex coord parameters
R_BindIVBO(&hudVBO,NULL,0);
glTexCoordPointer(2,GL_FLOAT,sizeof(vert_t),(void *)( sizeof(GL_FLOAT) * 3));
glVertexPointer(3,GL_FLOAT,sizeof(vert_t),NULL);
for (index = 0; index < 2; index++)
{
// bind the eye FBO
R_BindFBO(vrState.eyeFBO[index]);
// set the perspective matrix for that eye
R_PerspectiveScale(vrState.renderParams[index].projection, 0.24, 251.0);
// build the eye translation matrix
if (vr_autoipd->value)
{
TranslationMatrix(-vrState.renderParams[index].viewOffset[0], vrState.renderParams[index].viewOffset[1], vrState.renderParams[index].viewOffset[2], temp);
} else {
float viewOffset = (vr_ipd->value / 2000.0);
TranslationMatrix((-1 + index * 2) * -viewOffset, 0, 0, temp);
}
// load the view matrix
MatrixMultiply(temp, mat, temp);
GL_LoadMatrix(GL_MODELVIEW, temp);
// draw the hud for that eye
R_DrawIVBO(&hudVBO);
}
// teardown
R_ReleaseIVBO();
GL_MBind(0, 0);
glEnableClientState (GL_COLOR_ARRAY);
glTexCoordPointer (2, GL_FLOAT, sizeof(texCoordArray[0][0]), texCoordArray[0][0]);
glVertexPointer (3, GL_FLOAT, sizeof(vertexArray[0]), vertexArray[0]);
GL_Disable(GL_BLEND);
GL_Disable(GL_ALPHA_TEST);
}