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author | Kester Maddock <Christopher.Maddock.1@uni.massey.ac.nz> | 2005-01-16 09:27:12 +0300 |
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committer | Kester Maddock <Christopher.Maddock.1@uni.massey.ac.nz> | 2005-01-16 09:27:12 +0300 |
commit | dd0d5c26fa0f1c9ec9be513d5af52985c243a877 (patch) | |
tree | ad4902f9f60ebfe949aee8a6092c94a6023b0a6e /source/gameengine/PyDoc/KX_PolygonMaterial.py | |
parent | 3b91ea4309f47d937799382d988a6348e3bb2d7f (diff) |
Add an Python Material example
Diffstat (limited to 'source/gameengine/PyDoc/KX_PolygonMaterial.py')
-rw-r--r-- | source/gameengine/PyDoc/KX_PolygonMaterial.py | 133 |
1 files changed, 132 insertions, 1 deletions
diff --git a/source/gameengine/PyDoc/KX_PolygonMaterial.py b/source/gameengine/PyDoc/KX_PolygonMaterial.py index 5968d3d356c..55192968e11 100644 --- a/source/gameengine/PyDoc/KX_PolygonMaterial.py +++ b/source/gameengine/PyDoc/KX_PolygonMaterial.py @@ -2,10 +2,141 @@ class KX_PolygonMaterial: """ - This is the interface to materials in Blender. + This is the interface to materials in the game engine. Materials define the render state to be applied to mesh objects. + This example requires: + - PyOpenGL http://pyopengl.sourceforge.net/ + - GLEWPy http://glewpy.sourceforge.net/ + Example:: + + import GameLogic + import OpenGL + from OpenGL.GL import * + from OpenGL.GLU import * + import glew + from glew import * + + glewInit() + + vertex_shader = \"\"\" + + void main(void) + { + gl_Position = ftransform(); + } + \"\"\" + + fragment_shader =\"\"\" + + void main(void) + { + gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); + } + \"\"\" + + class MyMaterial: + def __init__(self): + self.pass_no = 0 + # Create a shader + self.m_program = glCreateProgramObjectARB() + # Compile the vertex shader + self.shader(GL_VERTEX_SHADER_ARB, (vertex_shader)) + # Compile the fragment shader + self.shader(GL_FRAGMENT_SHADER_ARB, (fragment_shader)) + # Link the shaders together + self.link() + + def PrintInfoLog(self, tag, object): + \"\"\" + PrintInfoLog prints the GLSL compiler log + \"\"\" + print "Tag: def PrintGLError(self, tag = ""): + + def PrintGLError(self, tag = ""): + \"\"\" + Prints the current GL error status + \"\"\" + if len(tag): + print tag + err = glGetError() + if err != GL_NO_ERROR: + print "GL Error: %s\\n"%(gluErrorString(err)) + + def shader(self, type, shaders): + \"\"\" + shader compiles a GLSL shader and attaches it to the current + program. + + type should be either GL_VERTEX_SHADER_ARB or GL_FRAGMENT_SHADER_ARB + shaders should be a sequence of shader source to compile. + \"\"\" + # Create a shader object + shader_object = glCreateShaderObjectARB(type) + + # Add the source code + glShaderSourceARB(shader_object, len(shaders), shaders) + + # Compile the shader + glCompileShaderARB(shader_object) + + # Print the compiler log + self.PrintInfoLog("vertex shader", shader_object) + + # Check if compiled, and attach if it did + compiled = glGetObjectParameterivARB(shader_object, GL_OBJECT_COMPILE_STATUS_ARB) + if compiled: + glAttachObjectARB(self.m_program, shader_object) + + # Delete the object (glAttachObjectARB makes a copy) + glDeleteObjectARB(shader_object) + + # print the gl error log + self.PrintGLError() + + def link(self): + \"\"\" + Links the shaders together. + \"\"\" + # clear error indicator + glGetError() + + glLinkProgramARB(self.m_program) + + self.PrintInfoLog("link", self.m_program) + + linked = glGetObjectParameterivARB(self.m_program, GL_OBJECT_LINK_STATUS_ARB) + if not linked: + print "Shader failed to link" + return + + glValidateProgramARB(self.m_program) + valid = glGetObjectParameterivARB(self.m_program, GL_OBJECT_VALIDATE_STATUS_ARB) + if not valid: + print "Shader failed to validate" + return + + def Activate(self, rasty, cachingInfo, mat): + self.pass_no+=1 + if (self.pass_no == 1): + glDisable(GL_COLOR_MATERIAL) + glUseProgramObjectARB(self.m_program) + return True + + glEnable(GL_COLOR_MATERIAL) + glUseProgramObjectARB(0) + self.pass_no = 0 + return False + + obj = GameLogic.getCurrentController().getOwner() + + mesh = obj.getMesh(0) + + for mat in mesh.materials: + mat.setCustomMaterial(MyMaterial()) + print mat.texture + @bug: All attributes are read only. @ivar texture: Texture name |