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authorDave Parks <davep@lindenlab.com>2011-10-24 15:32:58 -0500
committerDave Parks <davep@lindenlab.com>2011-10-24 15:32:58 -0500
commite2b52009ea509ec67341df196f3ad629869493e1 (patch)
tree65089b4903f6169f46333156d965609735f0a3dd /indra/llrender/llrendersphere.cpp
parent8d410326c937a375fa0eb7855678e590499a79d2 (diff)
parent7b83f1dfd1daeb4e0b80e1c369e83137682a723c (diff)
merge
Diffstat (limited to 'indra/llrender/llrendersphere.cpp')
-rw-r--r--indra/llrender/llrendersphere.cpp98
1 files changed, 2 insertions, 96 deletions
diff --git a/indra/llrender/llrendersphere.cpp b/indra/llrender/llrendersphere.cpp
index a5cd70445f..26bfe036e8 100644
--- a/indra/llrender/llrendersphere.cpp
+++ b/indra/llrender/llrendersphere.cpp
@@ -35,106 +35,12 @@
#include "llglheaders.h"
-GLUquadricObj *gQuadObj2 = NULL;
LLRenderSphere gSphere;
-void drawSolidSphere(GLdouble radius, GLint slices, GLint stacks);
-
-void drawSolidSphere(GLdouble radius, GLint slices, GLint stacks)
-{
- if (!gQuadObj2)
- {
- gQuadObj2 = gluNewQuadric();
- if (!gQuadObj2)
- {
- llwarns << "drawSolidSphere couldn't allocate quadric" << llendl;
- return;
- }
- }
-
- gluQuadricDrawStyle(gQuadObj2, GLU_FILL);
- gluQuadricNormals(gQuadObj2, GLU_SMOOTH);
- // If we ever changed/used the texture or orientation state
- // of quadObj, we'd need to change it to the defaults here
- // with gluQuadricTexture and/or gluQuadricOrientation.
- gluQuadricTexture(gQuadObj2, GL_TRUE);
- gluSphere(gQuadObj2, radius, slices, stacks);
-}
-
-
-// A couple thoughts on sphere drawing:
-// 1) You need more slices than stacks, but little less than 2:1
-// 2) At low LOD, setting stacks to an odd number avoids a "band" around the equator, making things look smoother
-void LLRenderSphere::prerender()
-{
- // Create a series of display lists for different LODs
- mDList[0] = glGenLists(1);
- glNewList(mDList[0], GL_COMPILE);
- drawSolidSphere(1.0, 30, 20);
- glEndList();
-
- mDList[1] = glGenLists(1);
- glNewList(mDList[1], GL_COMPILE);
- drawSolidSphere(1.0, 20, 15);
- glEndList();
-
- mDList[2] = glGenLists(1);
- glNewList(mDList[2], GL_COMPILE);
- drawSolidSphere(1.0, 12, 8);
- glEndList();
-
- mDList[3] = glGenLists(1);
- glNewList(mDList[3], GL_COMPILE);
- drawSolidSphere(1.0, 8, 5);
- glEndList();
-}
-
-void LLRenderSphere::cleanupGL()
-{
- for (S32 detail = 0; detail < 4; detail++)
- {
- glDeleteLists(mDList[detail], 1);
- mDList[detail] = 0;
- }
-
- if (gQuadObj2)
- {
- gluDeleteQuadric(gQuadObj2);
- gQuadObj2 = NULL;
- }
-}
-
-// Constants here are empirically derived from my eyeballs, JNC
-//
-// The toughest adjustment is the cutoff for the lowest LOD
-// Maybe we should have more LODs at the low end?
-void LLRenderSphere::render(F32 pixel_area)
-{
- S32 level_of_detail;
-
- if (pixel_area > 10000.f)
- {
- level_of_detail = 0;
- }
- else if (pixel_area > 800.f)
- {
- level_of_detail = 1;
- }
- else if (pixel_area > 100.f)
- {
- level_of_detail = 2;
- }
- else
- {
- level_of_detail = 3;
- }
- glCallList(mDList[level_of_detail]);
-}
-
-
void LLRenderSphere::render()
{
- glCallList(mDList[0]);
+ renderGGL();
+ gGL.flush();
}
inline LLVector3 polar_to_cart(F32 latitude, F32 longitude)