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Modify this shader to draw a simple textured rectangle using a two-tri strip, extremely quickly due to simplicity.

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This commit is contained in:
Pete Baron 2016-05-02 16:32:37 +12:00
parent 1adece490a
commit 9deb07c3aa
1 changed files with 9 additions and 6 deletions
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15
src/pixi/renderers/webgl/shaders/TilemapShader.js
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@ -1,3 +1,6 @@
/**
* @author Mat Groves http://matgroves.com/ @Doormat23
*/
/**
* @class TilemapShader
@ -46,17 +49,17 @@ PIXI.TilemapShader = function(gl)
* @type Array
*/
this.vertexSrc = [
" uniform vec2 uScreenPosition;",
" attribute vec4 aPosition;",
" uniform mat3 uProjectionMatrix;",
" uniform mat3 uModelMatrix;",
" varying vec2 vTexCoord;",
" void main(void) {",
" vec3 pos = uProjectionMatrix * uModelMatrix * vec3(aPosition.xy, 1);",
" vec3 pos = uProjectionMatrix * (vec3(aPosition.xy, 1) + vec3(uScreenPosition, 0));",
" gl_Position = vec4(pos.xy, 1, 1);",
" vTexCoord = aPosition.zw;",
" }"
];
];
/**
* A local texture counter for multi-texture shaders.
* @property textureCount
@ -84,10 +87,10 @@ PIXI.TilemapShader.prototype.init = function()
// get and store the attributes
this.aPosition = gl.getAttribLocation(program, 'aPosition');
this.uProjectionMatrix = gl.getUniformLocation(program, 'uProjectionMatrix');
this.uModelMatrix = gl.getUniformLocation(program, 'uModelMatrix');
this.uScreenPosition = gl.getUniformLocation(program, 'uScreenPosition');
this.uSampler = gl.getUniformLocation(program, 'uImageSampler');
this.attributes = [this.aPosition, this.uProjectionMatrix, this.uModelMatrix, this.uSampler];
this.attributes = [this.aScreenPosition, this.aPosition, this.uProjectionMatrix, this.uSampler];
this.program = program;
};