glGetFragDataLocation implementation
Implemented glGetFragDataLocation. There's very little coverage for
this function in dEQP, but the one test that uses it passes.
Change-Id: I6cfc93d7eaad54f23c922e45dafee9cba3401c83
Note: Chromium's ES3 path requires this function to be implemented.
Reviewed-on: https://swiftshader-review.googlesource.com/11728
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/OpenGL/libGLESv2/Program.cpp b/src/OpenGL/libGLESv2/Program.cpp
index 24d1f3c..7eda6f5 100644
--- a/src/OpenGL/libGLESv2/Program.cpp
+++ b/src/OpenGL/libGLESv2/Program.cpp
@@ -254,6 +254,27 @@
return vertexBinary;
}
+ GLint Program::getFragDataLocation(const GLchar *name)
+ {
+ if(name && linked)
+ {
+ std::string baseName(name);
+ unsigned int subscript = GL_INVALID_INDEX;
+ baseName = ParseUniformName(baseName, &subscript);
+ for(glsl::VaryingList::iterator input = fragmentShader->varyings.begin(); input != fragmentShader->varyings.end(); ++input)
+ {
+ if(input->name == baseName)
+ {
+ int rowCount = VariableRowCount(input->type);
+ int colCount = VariableColumnCount(input->type);
+ return (subscript == GL_INVALID_INDEX) ? input->reg : input->reg + (rowCount > 1 ? colCount * subscript : subscript);
+ }
+ }
+ }
+
+ return -1;
+ }
+
void Program::bindAttributeLocation(GLuint index, const char *name)
{
if(index < MAX_VERTEX_ATTRIBS)