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[core] Inline getActiveAttributes details

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This commit is contained in:
John Firebaugh
2017-07-03 14:05:12 -07:00
parent 8fb212dbb3
commit fedfaa2f6e
1 changed files with 14 additions and 28 deletions
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42
src/mbgl/gl/attribute.cpp
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@@ -13,39 +13,25 @@ AttributeLocation bindAttributeLocation(ProgramID id, AttributeLocation location
return location;
}
int32_t getActiveAttributeCount(ProgramID id) {
GLint numAttributes;
MBGL_CHECK_ERROR(glGetProgramiv(id, GL_ACTIVE_ATTRIBUTES, &numAttributes));
return numAttributes;
}
int32_t getMaxAttributeNameLength(ProgramID id) {
GLint nameLength;
MBGL_CHECK_ERROR(glGetProgramiv(id, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &nameLength));
return nameLength;
}
std::string getAttributeName(ProgramID id, int32_t maxLength, AttributeLocation location) {
std::string attributeName;
attributeName.resize(maxLength);
GLsizei actualLength;
GLint size;
GLenum type;
MBGL_CHECK_ERROR(glGetActiveAttrib(id, static_cast<GLuint>(location),
static_cast<GLsizei>(maxLength), &actualLength, &size, &type,
const_cast<char*>(attributeName.data())));
attributeName.resize(actualLength);
return attributeName;
}
std::set<std::string> getActiveAttributes(ProgramID id) {
std::set<std::string> activeAttributes;
GLint attributeCount = getActiveAttributeCount(id);
GLint maxAttributeLength = getMaxAttributeNameLength(id);
GLint attributeCount;
MBGL_CHECK_ERROR(glGetProgramiv(id, GL_ACTIVE_ATTRIBUTES, &attributeCount));
GLint maxAttributeLength;
MBGL_CHECK_ERROR(glGetProgramiv(id, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &maxAttributeLength));
std::string attributeName;
attributeName.resize(maxAttributeLength);
GLsizei actualLength;
GLint size;
GLenum type;
for (int32_t i = 0; i < attributeCount; i++) {
activeAttributes.emplace(getAttributeName(id, maxAttributeLength, i));
MBGL_CHECK_ERROR(glGetActiveAttrib(id, i, maxAttributeLength, &actualLength, &size, &type, &attributeName[0]));
activeAttributes.emplace(std::string(attributeName, 0, actualLength));
}
return activeAttributes;