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kwin: Bind fragdata locations in ShaderManager

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Fragment shaders are expected to declare a vec4 fragColor output,
which will be bound to the first draw buffer.
This commit is contained in:
Fredrik Höglund 2013-03-13 17:38:35 +01:00
parent 54b63a85a6
commit 54308889f0
2 changed files with 19 additions and 4 deletions
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22
libkwineffects/kwinglutils.cpp
View file

@ -788,6 +788,11 @@ void ShaderManager::popShader()
}
}
void ShaderManager::bindFragDataLocations(GLShader *shader)
{
shader->bindFragDataLocation("fragColor", 0);
}
GLShader *ShaderManager::loadFragmentShader(ShaderType vertex, const QString &fragmentFile)
{
const char *vertexFile[] = {
@ -796,7 +801,9 @@ GLShader *ShaderManager::loadFragmentShader(ShaderType vertex, const QString &fr
"scene-color-vertex.glsl"
};
GLShader *shader = new GLShader(m_shaderDir + vertexFile[vertex], fragmentFile);
GLShader *shader = new GLShader(m_shaderDir + vertexFile[vertex], fragmentFile, GLShader::ExplicitLinking);
bindFragDataLocations(shader);
shader->link();
if (shader->isValid()) {
pushShader(shader);
@ -816,7 +823,9 @@ GLShader *ShaderManager::loadVertexShader(ShaderType fragment, const QString &ve
"scene-color-fragment.glsl"
};
GLShader *shader = new GLShader(vertexFile, m_shaderDir + fragmentFile[fragment]);
GLShader *shader = new GLShader(vertexFile, m_shaderDir + fragmentFile[fragment], GLShader::ExplicitLinking);
bindFragDataLocations(shader);
shader->link();
if (shader->isValid()) {
pushShader(shader);
@ -829,8 +838,10 @@ GLShader *ShaderManager::loadVertexShader(ShaderType fragment, const QString &ve
GLShader *ShaderManager::loadShaderFromCode(const QByteArray &vertexSource, const QByteArray &fragmentSource)
{
GLShader *shader = new GLShader();
GLShader *shader = new GLShader(GLShader::ExplicitLinking);
shader->load(vertexSource, fragmentSource);
bindFragDataLocations(shader);
shader->link();
return shader;
}
@ -859,7 +870,10 @@ void ShaderManager::initShaders()
m_valid = true;
for (int i = 0; i < 3; i++) {
m_shader[i] = new GLShader(m_shaderDir + vertexFile[i], m_shaderDir + fragmentFile[i]);
m_shader[i] = new GLShader(m_shaderDir + vertexFile[i], m_shaderDir + fragmentFile[i],
GLShader::ExplicitLinking);
bindFragDataLocations(m_shader[i]);
m_shader[i]->link();
if (!m_shader[i]->isValid()) {
m_valid = false;

1
libkwineffects/kwinglutils.h
View file

@ -390,6 +390,7 @@ private:
void initShaders();
void resetShader(ShaderType type);
void bindFragDataLocations(GLShader *shader);
QStack<GLShader*> m_boundShaders;
GLShader *m_shader[3];