void triangle(void)
{
gl_UniformMatrix4fv (fgProjectionMatrixIndex, 1, GL_FALSE, projectionMatrix);
gl_BindBuffer (GL_ARRAY_BUFFER, vertexBufferName);
gl_VertexAttribPointer (fgColorIndex, numColorComponents, GL_FLOAT, GL_FALSE,
stride, bufferObjectPtr (0));
gl_VertexAttribPointer (fgVertexIndex, numVertexComponents, GL_FLOAT, GL_FALSE,
stride, bufferObjectPtr (sizeof(GLfloat) * numColorComponents));
glDrawArrays(GL_TRIANGLES, 0, numElements);
checkError ("triangle");
}
void setAttribPointers(void) {
glEnableVertexAttribArray(shader_map1["vNorm"]);
//glEnableVertexAttribArray(shader_map1["vColor"]);
//glEnableVertexAttribArray(shader_map1["vTex"]);
glEnableVertexAttribArray(shader_map1["vPos"]);
// bind the desired VertBufObj
glBindBuffer(GL_ARRAY_BUFFER, vertBufObj);
// tell OpenGL organization of vertArray and connect to GLSL variable
glVertexAttribPointer(shader_map1["vNorm"], numNormalComponents,
GL_FLOAT, GL_FALSE, stride, bufferObjectPtr(0));
glVertexAttribPointer(shader_map1["vPos"], numVertexComponents,
GL_FLOAT, GL_FALSE, stride,
bufferObjectPtr(sizeof(GLfloat) * numNormalComponents));
checkError("setAttribPointers");
}
void triangle(void) {
const GLvoid * i = bufferObjectPtr(0);
glUniformMatrix4fv(fgProjectionMatrixIndex, 1, GL_FALSE,
&projectionMatrix[0][0]);
glUniformMatrix4fv(fgModelViewMatrixIndex, 1, GL_FALSE,
&modelviewMatrix[0][0]);
glUniform4fv(fgLightPositionIndex, 1, &lightPosition[0]);
glBindBuffer(GL_ARRAY_BUFFER, vertexBufferName);
glVertexAttribPointer(fgNormalIndex, numNormalComponents, GL_FLOAT,
GL_FALSE, stride, bufferObjectPtr(0));
glVertexAttribPointer(fgVertexIndex, numVertexComponents, GL_FLOAT,
GL_FALSE, stride,
bufferObjectPtr(sizeof (GLfloat) * numNormalComponents));
glDrawArrays(GL_TRIANGLES, 0, numElements);
checkError("triangle");
}
void MeshObj::setAttribPointers(void) {
glEnableVertexAttribArray((*shader)["vNorm"]);
glBindBuffer(GL_ARRAY_BUFFER, normBufObj);
glVertexAttribPointer((*shader)["vNorm"], DIM3, GL_FLOAT, GL_FALSE,
sizeof(glm::vec3), bufferObjectPtr(0));
#if 1
if (0 != texArrObj.size()) {
glEnableVertexAttribArray((*shader)["vTex"]);
glBindBuffer(GL_ARRAY_BUFFER, texBufObj);
glVertexAttribPointer((*shader)["vTex"], DIM2, GL_FLOAT, GL_FALSE,
sizeof(glm::vec2), bufferObjectPtr(0));
}
#endif
glEnableVertexAttribArray((*shader)["vPos"]);
glBindBuffer(GL_ARRAY_BUFFER, vertBufObj);
glVertexAttribPointer((*shader)["vPos"], DIM3, GL_FLOAT, GL_FALSE,
sizeof(glm::vec3), bufferObjectPtr(0));
checkError("MeshObj::setAttribPointers");
} // end setAttribPointers
void MeshObj::render(GLenum mode) {
setAttribPointers();
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, idxBufObj);
// render the vertices to screen as triangles
// glDrawArrays(mode, first, count);
//glDrawArrays(mode, 0, vertArrObj.size());
// glDrawElements(mode, count, type, idxPtr);
glDrawElements(mode, idxArrObj.size(), GL_UNSIGNED_INT,
bufferObjectPtr(0));
disableBufObjs();
checkError("MeshObj::render");
} // end render
