Fix glDrawArray call

1 files changed, 8 insertions, 4 deletions

diff --git a/src/buffer/vertex/fluid_cell_buffer.cc b/src/buffer/vertex/fluid_cell_buffer.cc
index c602e0c..a0bfcc3 100644
--- a/src/buffer/vertex/fluid_cell_buffer.cc
+++ b/src/buffer/vertex/fluid_cell_buffer.cc
@@ -1,16 +1,20 @@
 #include "fluid_cell_buffer.h"
 
+#include <vector>
+
 FluidCellBuffer::FluidCellBuffer(GLuint nX, GLuint nY):
-	_data(3*nX*nY, GLfloat{}) {
+	_nX(nX), _nY(nY) {
 	glGenVertexArrays(1, &_array);
 	glGenBuffers(1, &_buffer);
 
 	glBindVertexArray(_array);
 	glBindBuffer(GL_ARRAY_BUFFER, _buffer);
+
+	const std::vector<GLfloat> data(3*nX*nY, GLfloat{});
 	glBufferData(
 		GL_ARRAY_BUFFER,
-		_data.size() * sizeof(GLfloat),
-		_data.data(),
+		data.size() * sizeof(GLfloat),
+		data.data(),
 		GL_DYNAMIC_DRAW
 	);
 
@@ -29,5 +33,5 @@ GLuint FluidCellBuffer::getBuffer() const {
 
 void FluidCellBuffer::draw() const {
 	glBindVertexArray(_array);
-	glDrawArrays(GL_POINTS, 0, _data.size());
+	glDrawArrays(GL_POINTS, 0, _nX*_nY);
 }