WebGLProgram.html 4.1 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="utf-8" />
  5. <base href="../../../../" />
  6. <script src="page.js"></script>
  7. <link type="text/css" rel="stylesheet" href="page.css" />
  8. </head>
  9. <body>
  10. <h1>[name]</h1>
  11. <p class="desc">Constructor for the GLSL program sent to vertex and fragment shaders, including default uniforms and attributes.</p>
  12. <h2>Built-in uniforms and attributes</h2>
  13. <h3>Vertex shader (unconditional):</h3>
  14. <div>
  15. <code>
  16. // = object.matrixWorld
  17. uniform mat4 modelMatrix;
  18. // = camera.matrixWorldInverse * object.matrixWorld
  19. uniform mat4 modelViewMatrix;
  20. // = camera.projectionMatrix
  21. uniform mat4 projectionMatrix;
  22. // = camera.matrixWorldInverse
  23. uniform mat4 viewMatrix;
  24. // = inverse transpose of modelViewMatrix
  25. uniform mat3 normalMatrix;
  26. // = camera position in world space
  27. uniform vec3 cameraPosition;
  28. </code>
  29. <code>
  30. // default vertex attributes provided by Geometry and BufferGeometry
  31. attribute vec3 position;
  32. attribute vec3 normal;
  33. attribute vec2 uv;
  34. </code>
  35. <p>
  36. Note that you can therefore calculate the position of a vertex in the vertex shader by:
  37. <code>
  38. gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
  39. </code>
  40. or alternatively
  41. <code>
  42. gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4( position, 1.0 );
  43. </code>
  44. </p>
  45. </div>
  46. <h3>Vertex shader (conditional):</h3>
  47. <div>
  48. <code>
  49. #if defined( USE_COLOR_ALPHA )
  50. // vertex color attribute with alpha
  51. attribute vec4 color;
  52. #elif defined( USE_COLOR )
  53. // vertex color attribute
  54. attribute vec3 color;
  55. #endif
  56. </code>
  57. <code>
  58. #ifdef USE_MORPHTARGETS
  59. attribute vec3 morphTarget0;
  60. attribute vec3 morphTarget1;
  61. attribute vec3 morphTarget2;
  62. attribute vec3 morphTarget3;
  63. #ifdef USE_MORPHNORMALS
  64. attribute vec3 morphNormal0;
  65. attribute vec3 morphNormal1;
  66. attribute vec3 morphNormal2;
  67. attribute vec3 morphNormal3;
  68. #else
  69. attribute vec3 morphTarget4;
  70. attribute vec3 morphTarget5;
  71. attribute vec3 morphTarget6;
  72. attribute vec3 morphTarget7;
  73. #endif
  74. #endif
  75. </code>
  76. <code>
  77. #ifdef USE_SKINNING
  78. attribute vec4 skinIndex;
  79. attribute vec4 skinWeight;
  80. #endif
  81. </code>
  82. <code>
  83. #ifdef USE_INSTANCING
  84. // Note that modelViewMatrix is not set when rendering an instanced model,
  85. // but can be calculated from viewMatrix * modelMatrix.
  86. //
  87. // Basic Usage:
  88. // gl_Position = projectionMatrix * viewMatrix * modelMatrix * instanceMatrix * vec4(position, 1.0);
  89. attribute mat4 instanceMatrix;
  90. #endif
  91. </code>
  92. </div>
  93. <h3>Fragment shader:</h3>
  94. <div>
  95. <code>
  96. uniform mat4 viewMatrix;
  97. uniform vec3 cameraPosition;
  98. </code>
  99. </div>
  100. <h2>Constructor</h2>
  101. <h3>[name]( [param:WebGLRenderer renderer], [param:String cacheKey], [param:Object parameters] )</h3>
  102. <p>For parameters see [page:WebGLRenderer WebGLRenderer].</p>
  103. <h2>Properties</h2>
  104. <h3>[property:String name]</h3>
  105. <p>The name of the respective shader program.</p>
  106. <h3>[property:String id]</h3>
  107. <p>The identifier of this instance.</p>
  108. <h3>[property:String cacheKey]</h3>
  109. <p>This key enables the reusability of a single [name] for different materials.</p>
  110. <h3>[property:Integer usedTimes]</h3>
  111. <p>How many times this instance is used for rendering render items.</p>
  112. <h3>[property:Object program]</h3>
  113. <p>The actual shader program.</p>
  114. <h3>[property:WebGLShader vertexShader]</h3>
  115. <p>An instance of [page:WebGLShader] representing the vertex shader.</p>
  116. <h3>[property:WebGLShader fragmentShader]</h3>
  117. <p>An instance of [page:WebGLShader] representing the frament shader.</p>
  118. <h2>Methods</h2>
  119. <h3>[method:Object getUniforms]()</h3>
  120. <p>
  121. Returns a name-value mapping of all active uniform locations.
  122. </p>
  123. <h3>[method:Object getAttributes]()</h3>
  124. <p>
  125. Returns a name-value mapping of all active vertex attribute locations.
  126. </p>
  127. <h3>[method:null destroy]()</h3>
  128. <p>
  129. Destroys an instance of [name].
  130. </p>
  131. <h2>Source</h2>
  132. <p>
  133. [link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
  134. </p>
  135. </body>
  136. </html>