Class BL_Shader -- Blender Game Engine 2.49b
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setUniform4i
setUniform4i(name, ix,iy,iz, iw)
Used to pass four integer values from the main program to the vertex or
fragment program
name:
Type:
string
ix:
Type:
integer
iy:
Type:
integer
iz:
Type:
integer
iw:
Type:
integer
Sample Code
# define the main part of the program
def main():
# get the current scene
scene = GameLogic.getCurrentScene()
# get a list of the objects in the scene
objList = scene.objects
# Get the object you want to use
obj = objList['OBCube']
# Only one mesh on this Cube
mesh = obj.meshes[0]
# only one material on this mesh
mat = mesh.materials[0]
# Using Blender GLSL Materials or Blender Multitexture
Materials?
if hasattr( mat, 'getMaterialIndex') == True:
#Get shader envelope
shader = mat.getShader()
# shader envelope created?
if shader != None:
# set the shader
shader.setSource(VertexShader, FragmentShader, True)
# pass ivec4 variable to shader
shader.setUniform4i("MyVar", 2, 1, 3, 10)
####### end of main program def
# Import OpenGL code as a string
VertexProgram = """
void main()
{
// OpenGL glsl
gl_Position = ftransform();
}
"""
# Import OpenGL code as a string
FragmentProgram = """
// vec3 float passed from main program
uniform ivec4 MyVar;
void main()
{
// code to use MyVar
// Turn cube green
gl_FragColor = vec4( RedGreenBlue, 1.0);
}
"""
# run the program
main()
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Game developers
can use the game engine to create casual video games,
first and third person shooters, role playing games, racing simulations
and more. The game engine can be used to make both 2D games and 3D
games. Beginning game developers will only need basic knowledge
of
game design and programming to create rich and complex game models with
photo realistic textures to add detail to the graphics of the video
game. Today's games need more than good looking low polygon game
models. Use normal maps and photo realistic textures to create
high
quality game models.
