The Tor Browser: gfx/angle/src/libGLESv2/renderer/shaders/Blit.vs@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 //

     2 // Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.

     3 // Use of this source code is governed by a BSD-style license that can be

     4 // found in the LICENSE file.

     5 //

     7 struct VS_OUTPUT

8 {

     9     float4 position : POSITION;

    10     float4 texcoord : TEXCOORD0;

    11 };

    13 uniform float4 halfPixelSize : c0;

    15 // Standard Vertex Shader

    16 // Input 0 is the homogenous position.

    17 // Outputs the homogenous position as-is.

    18 // Outputs a tex coord with (0,0) in the upper-left corner of the screen and (1,1) in the bottom right.

    19 // C0.X must be negative half-pixel width, C0.Y must be half-pixel height. C0.ZW must be 0.

    20 VS_OUTPUT standardvs(in float4 position : POSITION)

    21 {

    22     VS_OUTPUT Out;

    24     Out.position = position + halfPixelSize;

    25     Out.texcoord = position * float4(0.5, -0.5, 1.0, 1.0) + float4(0.5, 0.5, 0, 0);

    27     return Out;

    28 };

    30 // Flip Y Vertex Shader

    31 // Input 0 is the homogenous position.

    32 // Outputs the homogenous position as-is.

    33 // Outputs a tex coord with (0,1) in the upper-left corner of the screen and (1,0) in the bottom right.

    34 // C0.XY must be the half-pixel width and height. C0.ZW must be 0.

    35 VS_OUTPUT flipyvs(in float4 position : POSITION)

    36 {

    37     VS_OUTPUT Out;

    39     Out.position = position + halfPixelSize;

    40     Out.texcoord = position * float4(0.5, 0.5, 1.0, 1.0) + float4(0.5, 0.5, 0, 0);

    42     return Out;

    43 };

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