Mesa (master): vbo: add new vbo_compute_max_verts() helper function
Brian Paul
brianp at kemper.freedesktop.org
Tue Oct 20 19:59:46 UTC 2015
Module: Mesa
Branch: master
Commit: 03d2f085394011f704f5702a92128b5677733c38
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=03d2f085394011f704f5702a92128b5677733c38
Author: Brian Paul <brianp at vmware.com>
Date: Fri Oct 16 11:19:40 2015 -0600
vbo: add new vbo_compute_max_verts() helper function
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
Reviewed-by: Jose Fonseca <jfonseca at vmware.com>
Reviewed-by: Sinclair Yeh <syeh at vmware.com>
---
src/mesa/vbo/vbo_context.h | 14 ++++++++++++++
src/mesa/vbo/vbo_exec_api.c | 3 +--
src/mesa/vbo/vbo_exec_draw.c | 3 +--
3 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/src/mesa/vbo/vbo_context.h b/src/mesa/vbo/vbo_context.h
index a376efe..1e85335 100644
--- a/src/mesa/vbo/vbo_context.h
+++ b/src/mesa/vbo/vbo_context.h
@@ -196,6 +196,20 @@ vbo_get_default_vals_as_union(GLenum format)
}
}
+
+/**
+ * Compute the max number of vertices which can be stored in
+ * a vertex buffer, given the current vertex size, and the amount
+ * of space already used.
+ */
+static inline unsigned
+vbo_compute_max_verts(const struct vbo_exec_context *exec)
+{
+ return (VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
+ (exec->vtx.vertex_size * sizeof(GLfloat));
+}
+
+
#ifdef __cplusplus
} // extern "C"
#endif
diff --git a/src/mesa/vbo/vbo_exec_api.c b/src/mesa/vbo/vbo_exec_api.c
index 3f87ac4..f26bf40 100644
--- a/src/mesa/vbo/vbo_exec_api.c
+++ b/src/mesa/vbo/vbo_exec_api.c
@@ -291,8 +291,7 @@ vbo_exec_wrap_upgrade_vertex(struct vbo_exec_context *exec,
*/
exec->vtx.attrsz[attr] = newSize;
exec->vtx.vertex_size += newSize - oldSize;
- exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
- (exec->vtx.vertex_size * sizeof(GLfloat)));
+ exec->vtx.max_vert = vbo_compute_max_verts(exec);
exec->vtx.vert_count = 0;
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
diff --git a/src/mesa/vbo/vbo_exec_draw.c b/src/mesa/vbo/vbo_exec_draw.c
index 9b1103d..f6a1e4b 100644
--- a/src/mesa/vbo/vbo_exec_draw.c
+++ b/src/mesa/vbo/vbo_exec_draw.c
@@ -435,8 +435,7 @@ vbo_exec_vtx_flush(struct vbo_exec_context *exec, GLboolean keepUnmapped)
if (keepUnmapped || exec->vtx.vertex_size == 0)
exec->vtx.max_vert = 0;
else
- exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
- (exec->vtx.vertex_size * sizeof(GLfloat)));
+ exec->vtx.max_vert = vbo_compute_max_verts(exec);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
exec->vtx.prim_count = 0;
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