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OpenGL2: Add GPU vertex skinning for IQM models

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Using GPU vertex skinning is significantly faster than CPU vertex
skinning. Especially since OpenGL2 has to run R_VaoPackNormal() and
R_VaoPackTangent() each vertex each frame which causes CPU vertex
skinning to be significantly slower than OpenGL1 renderer.
This commit is contained in:
Zack Middleton 2018-07-27 17:40:25 -05:00
parent cccd283be8
commit 11337c9fa2
10 changed files with 533 additions and 34 deletions
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7
code/renderergl2/tr_init.c
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@ -275,6 +275,13 @@ static void InitOpenGL( void )
qglGetIntegerv( GL_MAX_TEXTURE_IMAGE_UNITS, &temp );
glConfig.numTextureUnits = temp;
// reserve 160 components for other uniforms
qglGetIntegerv( GL_MAX_VERTEX_UNIFORM_COMPONENTS, &temp );
glRefConfig.glslMaxAnimatedBones = Com_Clamp( 0, IQM_MAX_JOINTS, ( temp - 160 ) / 16 );
if ( glRefConfig.glslMaxAnimatedBones < 12 ) {
glRefConfig.glslMaxAnimatedBones = 0;
}
}
// set default state