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Pass the aspect ratio into the shader, since it no longer necessarily

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corresponds to the texture rectangle's aspect ratio.
This commit is contained in:
Andrzej Kapolka 2013-07-18 21:25:11 -07:00
parent 0ae6887c4a
commit ff0d63173c
3 changed files with 8 additions and 1 deletions
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5
interface/resources/shaders/face.vert
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@ -17,6 +17,9 @@ uniform vec2 texCoordRight;
// the texture coordinate vector from bottom to the top
uniform vec2 texCoordUp;
// the aspect ratio of the image
uniform float aspectRatio;
// the depth texture
uniform sampler2D depthTexture;
@ -29,5 +32,5 @@ void main(void) {
const float MAX_VISIBLE_DEPTH = 254.0 / 255.0;
gl_FrontColor = vec4(1.0, 1.0, 1.0, step(MIN_VISIBLE_DEPTH, depth) * (1.0 - step(MAX_VISIBLE_DEPTH, depth)));
gl_Position = gl_ModelViewProjectionMatrix * vec4(0.5 - gl_Vertex.x,
(gl_Vertex.y - 0.5) * length(texCoordUp) / length(texCoordRight), depth * 2.0 - 2.0, 1.0);
(gl_Vertex.y - 0.5) / aspectRatio, depth * 2.0 - 2.0, 1.0);
}

3
interface/src/avatar/Face.cpp
View file

@ -25,6 +25,7 @@ ProgramObject* Face::_program = 0;
int Face::_texCoordCornerLocation;
int Face::_texCoordRightLocation;
int Face::_texCoordUpLocation;
int Face::_aspectRatioLocation;
GLuint Face::_vboID;
GLuint Face::_iboID;
@ -205,6 +206,7 @@ bool Face::render(float alpha) {
_texCoordCornerLocation = _program->uniformLocation("texCoordCorner");
_texCoordRightLocation = _program->uniformLocation("texCoordRight");
_texCoordUpLocation = _program->uniformLocation("texCoordUp");
_aspectRatioLocation = _program->uniformLocation("aspectRatio");
glGenBuffers(1, &_vboID);
glBindBuffer(GL_ARRAY_BUFFER, _vboID);
@ -253,6 +255,7 @@ bool Face::render(float alpha) {
(points[3].x - points[0].x) / _textureSize.width, (points[3].y - points[0].y) / _textureSize.height);
_program->setUniformValue(_texCoordUpLocation,
(points[1].x - points[0].x) / _textureSize.width, (points[1].y - points[0].y) / _textureSize.height);
_program->setUniformValue(_aspectRatioLocation, _aspectRatio);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, 0);

1
interface/src/avatar/Face.h
View file

@ -67,6 +67,7 @@ private:
static int _texCoordCornerLocation;
static int _texCoordRightLocation;
static int _texCoordUpLocation;
static int _aspectRatioLocation;
static GLuint _vboID;
static GLuint _iboID;
};