Droog71/oolite
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Switch dust from points to point sprites. Massive efficiency improvement on my graphics card. Will need testing to make sure it doesn't break things for others.

Browse Source 
git-svn-id: http://svn.berlios.de/svnroot/repos/oolite-linux/trunk@5495 127b21dd-08f5-0310-b4b7-95ae10353056
This commit is contained in:
Chris Morris 2012-11-13 19:09:01 +00:00
parent 938bcb59bb
commit eb3934d8f6
2 changed files with 17 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/Core/Entities/DustEntity.h
View File

@ -26,6 +26,7 @@ MA 02110-1301, USA.
#import "Entity.h"
#import "OOOpenGLExtensionManager.h"
#import "OOTexture.h"
#define DUST_SCALE 2000
#define DUST_N_PARTICLES 600
@ -40,6 +41,7 @@ MA 02110-1301, USA.
Vector vertices[DUST_N_PARTICLES * 2];
GLushort indices[DUST_N_PARTICLES * 2];
GLfloat color_fv[4];
OOTexture *texture;
#if OO_SHADERS
GLfloat warpinessAttr[DUST_N_PARTICLES * 2];

18
src/Core/Entities/DustEntity.m
View File

@ -31,6 +31,7 @@ MA 02110-1301, USA.
#import "OODebugFlags.h"
#import "OOMacroOpenGL.h"
#if OO_SHADERS
#import "OOMaterial.h" // For kTangentAttributeIndex
#import "OOShaderProgram.h"
@ -95,6 +96,12 @@ enum
dust_color = [[OOColor colorWithRed:0.5 green:1.0 blue:1.0 alpha:1.0] retain];
[self setStatus:STATUS_ACTIVE];
texture = [[OOTexture textureWithName:@"oolite-particle-dust.png"
inFolder:@"Textures"
options:kOOTextureMinFilterMipMap | kOOTextureMagFilterLinear | kOOTextureAlphaMask
anisotropy:kOOTextureDefaultAnisotropy / 2.0
lodBias:0.0] retain];
[[OOGraphicsResetManager sharedManager] registerClient:self];
@ -106,7 +113,8 @@ enum
{
DESTROY(dust_color);
[[OOGraphicsResetManager sharedManager] unregisterClient:self];
DESTROY(texture);
#if OO_SHADERS
DESTROY(shader);
DESTROY(uniforms);
@ -308,12 +316,12 @@ enum
OOGL(glFogf(GL_FOG_END, FAR_PLANE));
}
OOGL(glDisable(GL_TEXTURE_2D));
OOGL(glEnable(GL_BLEND));
OOGL(glDepthMask(GL_FALSE));
if (warp_stars)
{
OOGL(glDisable(GL_TEXTURE_2D));
#if OO_SHADERS
if (useShader)
{
@ -340,11 +348,16 @@ enum
OOGL(glDisableVertexAttribArrayARB(kTangentAttributeIndex));
}
#endif
OOGL(glEnable(GL_TEXTURE_2D));
}
else
{
OOGL(glEnable(GL_POINT_SPRITE_ARB));
[texture apply];
OOGL(glVertexPointer(3, GL_FLOAT, 0, vertices));
OOGL(glDrawArrays(GL_POINTS, 0, DUST_N_PARTICLES));
OOGL(glDisable(GL_POINT_SPRITE_ARB));
}
// reapply normal conditions
@ -361,7 +374,6 @@ enum
OOGL(glDisable(GL_BLEND));
OOGL(glDepthMask(GL_TRUE));
OOGL(glEnable(GL_TEXTURE_2D));
OOGL(glEnableClientState(GL_NORMAL_ARRAY));
OOVerifyOpenGLState();