kc3-lang/angle/src/libANGLE/renderer/d3d/d3d9/shaders/Blit.vs

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• Hash : 437cca5a
  Author :
  Date : 2016-04-20T14:21:17
  

  Add support for CHROMIUM_copy_texture with D3D9.
  
  BUG=angleproject:1356
  
  Change-Id: If63779e39609083deb6bb72dc8c29eaaa90c698c
  Reviewed-on: https://chromium-review.googlesource.com/339813
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/d3d/d3d9/shaders/Blit.vs

• //
  // Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  struct VS_OUTPUT
  {
      float4 position : POSITION;
      float4 texcoord : TEXCOORD0;
  };
  
  uniform float4 halfPixelSize : c0;
  uniform float4 texcoordOffset : c1;
  
  // Standard Vertex Shader
  // Input 0 is the homogenous position.
  // Outputs the homogenous position as-is.
  // Outputs a tex coord with (0,0) in the upper-left corner of the screen and (1,1) in the bottom right.
  // C0.X must be negative half-pixel width, C0.Y must be half-pixel height. C0.ZW must be 0.
  VS_OUTPUT standardvs(in float4 position : POSITION)
  {
      VS_OUTPUT Out;
  
      Out.position = position + halfPixelSize;
      Out.texcoord = ((position * float4(0.5, -0.5, 1.0, 1.0) + float4(0.5, 0.5, 0, 0)) * float4(texcoordOffset.zw, 1.0, 1.0)) + float4(texcoordOffset.xy, 0, 0);
  
      return Out;
  };
  

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