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path: root/mesalib/src/gallium/auxiliary/util/u_draw_quad.c
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Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_draw_quad.c')
-rw-r--r--mesalib/src/gallium/auxiliary/util/u_draw_quad.c26
1 files changed, 24 insertions, 2 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_draw_quad.c b/mesalib/src/gallium/auxiliary/util/u_draw_quad.c
index 590fa0c36..469c87498 100644
--- a/mesalib/src/gallium/auxiliary/util/u_draw_quad.c
+++ b/mesalib/src/gallium/auxiliary/util/u_draw_quad.c
@@ -69,6 +69,27 @@ util_draw_vertex_buffer(struct pipe_context *pipe,
}
+/**
+ * Draw a simple vertex buffer / primitive.
+ * Limited to float[4] vertex attribs, tightly packed.
+ */
+void
+util_draw_user_vertex_buffer(struct cso_context *cso, void *buffer,
+ uint prim_type, uint num_verts, uint num_attribs)
+{
+ struct pipe_vertex_buffer vbuffer = {0};
+
+ assert(num_attribs <= PIPE_MAX_ATTRIBS);
+
+ vbuffer.user_buffer = buffer;
+ vbuffer.stride = num_attribs * 4 * sizeof(float); /* vertex size */
+
+ /* note: vertex elements already set by caller */
+
+ cso_set_vertex_buffers(cso, 1, &vbuffer);
+ cso_draw_arrays(cso, prim_type, 0, num_verts);
+}
+
/**
* Draw screen-aligned textured quad.
@@ -118,10 +139,11 @@ util_draw_texquad(struct pipe_context *pipe, struct cso_context *cso,
v[28] = 0.0;
v[29] = 1.0;
- vbuf = pipe_user_buffer_create(pipe->screen, v, vertexBytes,
- PIPE_BIND_VERTEX_BUFFER);
+ vbuf = pipe_buffer_create(pipe->screen, PIPE_BIND_VERTEX_BUFFER,
+ PIPE_USAGE_STAGING, vertexBytes);
if (!vbuf)
goto out;
+ pipe_buffer_write(pipe, vbuf, 0, vertexBytes, v);
util_draw_vertex_buffer(pipe, cso, vbuf, 0, PIPE_PRIM_TRIANGLE_FAN, 4, 2);