Commit 30f1a1e6 authored by Anakin's avatar Anakin

passing poylNormal, tangent, bitangent to shader

parent cdf19911
......@@ -34,6 +34,7 @@ private:
// functions
private:
void clearData();
void setupPipeline(QOpenGLShaderProgram * program);
public:
void drawGeometry(QOpenGLShaderProgram *program);
......
......@@ -22,6 +22,10 @@ uniform struct Light {
float ambientCoefficient;
} light;
attribute vec3 a_polyNorm;
attribute vec3 a_polyTan;
attribute vec3 a_polyBiTan;
varying vec2 v_surfaceUV;
varying vec3 v_surfacePosition;
varying vec3 v_surfaceNormal;
......
......@@ -52,26 +52,8 @@ void GeometryEngine::clearData()
m_drawList.clear();
}
void GeometryEngine::drawGeometry(QOpenGLShaderProgram *program)
void GeometryEngine::setupPipeline(QOpenGLShaderProgram *program)
{
if (!m_arrayBuf.isCreated() || !m_indexBuf.isCreated())
return;
// Setup
// Tell OpenGL which VBOs to use
m_arrayBuf.bind();
m_indexBuf.bind();
// Allways normalize by this
QMatrix4x4 normMatrix;
float maxExtent = std::max(std::max(m_boundings.extents[0], m_boundings.extents[1]), m_boundings.extents[2]);
normMatrix.scale(1 / maxExtent);
normMatrix.translate(-m_boundings.center[0], -m_boundings.center[1], -m_boundings.center[2]);
program->setUniformValue("norm_matrix", normMatrix);
// Allways use texture unit 0
program->setUniformValue("texture", 0);
// Offset for position
quintptr offset = 0;
......@@ -88,14 +70,63 @@ void GeometryEngine::drawGeometry(QOpenGLShaderProgram *program)
program->enableAttributeArray(texcoordLocation);
program->setAttributeBuffer(texcoordLocation, GL_FLOAT, offset, 2, sizeof(VertexData));
//Offset for normal
//Offset for vertexNormal
offset += sizeof(QVector2D);
// Tell OpenGL programmable pipeline how to locate vertex normal data
int normLocation = program->attributeLocation("a_normal");
program->enableAttributeArray(normLocation);
program->setAttributeBuffer(normLocation, GL_FLOAT, offset, 3, sizeof(VertexData));
int vertNormLocation = program->attributeLocation("a_normal");
program->enableAttributeArray(vertNormLocation);
program->setAttributeBuffer(vertNormLocation, GL_FLOAT, offset, 3, sizeof(VertexData));
//Offset for polygonNormal
offset += sizeof(QVector3D);
// Tell OpenGL programmable pipeline how to locate polygon normal data
int polyNormLocation = program->attributeLocation("a_polyNorm");
program->enableAttributeArray(polyNormLocation);
program->setAttributeBuffer(polyNormLocation, GL_FLOAT, offset, 3, sizeof(VertexData));
//Offset for polygonTangent
offset += sizeof(QVector3D);
// Tell OpenGL programmable pipeline how to locate polygon tangent data
int polyTanLocation = program->attributeLocation("a_polyTan");
program->enableAttributeArray(polyTanLocation);
program->setAttributeBuffer(polyTanLocation, GL_FLOAT, offset, 3, sizeof(VertexData));
//Offset for polygonBitangent
offset += sizeof(QVector3D);
// Tell OpenGL programmable pipeline how to locate polygon bitangent data
int polyBiTanLocation = program->attributeLocation("a_polyBiTan");
program->enableAttributeArray(polyBiTanLocation);
program->setAttributeBuffer(polyBiTanLocation, GL_FLOAT, offset, 3, sizeof(VertexData));
}
void GeometryEngine::drawGeometry(QOpenGLShaderProgram *program)
{
if (!m_arrayBuf.isCreated() || !m_indexBuf.isCreated())
return;
// Setup
// Tell OpenGL which VBOs to use
m_arrayBuf.bind();
m_indexBuf.bind();
// Allways normalize by this
QMatrix4x4 normMatrix;
float maxExtent = std::max(std::max(m_boundings.extents[0], m_boundings.extents[1]), m_boundings.extents[2]);
normMatrix.scale(1 / maxExtent);
normMatrix.translate(-m_boundings.center[0], -m_boundings.center[1], -m_boundings.center[2]);
program->setUniformValue("norm_matrix", normMatrix);
// Allways use texture unit 0
program->setUniformValue("texture", 0);
//setup the pipeline
setupPipeline(program);
// Paint
for (auto& it : m_drawList)
......
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