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Improve performance of drawing GridOverlay3D

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Ryan Huffman 2014-11-18 12:24:52 -08:00
parent 16e3887cbc
commit ad3d7fbfb4
1 changed files with 11 additions and 9 deletions
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20
interface/src/ui/overlays/Grid3DOverlay.cpp
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@ -69,9 +69,10 @@ void Grid3DOverlay::render(RenderArgs* args) {
xColor color = getColor();
glm::vec3 position = getPosition();
const int GRID_DIVISIONS = 300;
const int MINOR_GRID_DIVISIONS = 100;
const int MAJOR_GRID_DIVISIONS = 50;
const float MAX_COLOR = 255.0f;
float scale = GRID_DIVISIONS * spacing;
glColor4f(color.red / MAX_COLOR, color.green / MAX_COLOR, color.blue / MAX_COLOR, alpha);
@ -80,12 +81,13 @@ void Grid3DOverlay::render(RenderArgs* args) {
// Minor grid
glPushMatrix();
{
glTranslatef(_minorGridWidth * (floorf(rotated.x / spacing) - GRID_DIVISIONS / 2),
spacing * (floorf(rotated.y / spacing) - GRID_DIVISIONS / 2), position.z);
glTranslatef(_minorGridWidth * (floorf(rotated.x / spacing) - MINOR_GRID_DIVISIONS / 2),
spacing * (floorf(rotated.y / spacing) - MINOR_GRID_DIVISIONS / 2), position.z);
float scale = MINOR_GRID_DIVISIONS * spacing;
glScalef(scale, scale, scale);
Application::getInstance()->getGeometryCache()->renderGrid(GRID_DIVISIONS, GRID_DIVISIONS);
Application::getInstance()->getGeometryCache()->renderGrid(MINOR_GRID_DIVISIONS, MINOR_GRID_DIVISIONS);
}
glPopMatrix();
@ -94,13 +96,13 @@ void Grid3DOverlay::render(RenderArgs* args) {
{
glLineWidth(4.0f);
spacing *= _majorGridEvery;
glTranslatef(spacing * (floorf(rotated.x / spacing) - GRID_DIVISIONS / 2),
spacing * (floorf(rotated.y / spacing) - GRID_DIVISIONS / 2), position.z);
glTranslatef(spacing * (floorf(rotated.x / spacing) - MAJOR_GRID_DIVISIONS / 2),
spacing * (floorf(rotated.y / spacing) - MAJOR_GRID_DIVISIONS / 2), position.z);
scale *= _majorGridEvery;
float scale = MAJOR_GRID_DIVISIONS * spacing;
glScalef(scale, scale, scale);
Application::getInstance()->getGeometryCache()->renderGrid(GRID_DIVISIONS, GRID_DIVISIONS);
Application::getInstance()->getGeometryCache()->renderGrid(MAJOR_GRID_DIVISIONS, MAJOR_GRID_DIVISIONS);
}
glPopMatrix();