ambient occlusionHEADmain

1 files changed, 24 insertions, 3 deletions

diff --git a/src/mesh.c b/src/mesh.c
index 2ffe61b..2c3d040 100644
--- a/src/mesh.c
+++ b/src/mesh.c
@@ -7,6 +7,7 @@ void mesh_init(Mesh *mesh, u32 vertex_count)
 	glGenVertexArrays(1, &mesh->vao);
 	mesh->vbos_count = 0;
 	mesh->vertex_count = vertex_count;
+	mesh->ebo = 0;
 	glBindVertexArray(mesh->vao);
 }
 
@@ -16,7 +17,7 @@ static void mesh_store(Mesh *mesh, void *data, u32 len, u32 dimensions, GLenum t
 	GLint index = mesh->vbos_count;
 	glGenBuffers(1, &vbo);
 	glBindBuffer(GL_ARRAY_BUFFER, vbo);
-	glBufferData(GL_ARRAY_BUFFER, len, data, GL_STATIC_DRAW);
+	glBufferData(GL_ARRAY_BUFFER, len * dimensions, data, GL_STATIC_DRAW);
 	glEnableVertexAttribArray(index);
 	if (type == GL_FLOAT)
 		glVertexAttribPointer(index, dimensions, type, GL_FALSE, 0, 0);
@@ -45,6 +46,17 @@ void mesh_store_u32(Mesh *mesh, u32 *data, u32 count, u32 dimensions)
 	mesh_store(mesh, data, count * sizeof(u32), dimensions, GL_UNSIGNED_INT);
 }
 
+void mesh_store_indicies(Mesh *mesh, u16 *data, u32 count)
+{
+	GLuint ebo;
+	u32 len;
+	len = count * sizeof(u16);
+	glGenBuffers(1, &ebo);
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, len, data, GL_STATIC_DRAW);
+	mesh->ebo = ebo;
+}
+
 void mesh_finish(void)
 {
 	glBindVertexArray(0);
@@ -66,18 +78,27 @@ void mesh_unbind(Mesh *mesh)
 
 void mesh_draw(Mesh *mesh)
 {
-	glDrawArrays(GL_TRIANGLES, 0, mesh->vertex_count);
+	if (mesh->ebo)
+		glDrawElements(GL_TRIANGLES, mesh->vertex_count, GL_UNSIGNED_SHORT, NULL);
+	else
+		glDrawArrays(GL_TRIANGLES, 0, mesh->vertex_count);
 }
 
 void mesh_draw_instanced(Mesh *mesh, u32 count)
 {
-	glDrawArraysInstanced(GL_TRIANGLES, 0, mesh->vertex_count, count);
+	if (mesh->ebo)
+		glDrawElementsInstanced(GL_TRIANGLES, mesh->vertex_count, GL_UNSIGNED_SHORT, NULL,
+								count);
+	else
+		glDrawArraysInstanced(GL_TRIANGLES, 0, mesh->vertex_count, count);
 }
 
 void mesh_free(Mesh *mesh)
 {
 	glDeleteBuffers(mesh->vbos_count, mesh->vbos);
 	glDeleteVertexArrays(1, &mesh->vao);
+	if (mesh->ebo)
+		glDeleteBuffers(1, &mesh->ebo);
 }
 
 void uniform_init(Uniform *uniform, u32 len)