diff options
| author | marha <marha@users.sourceforge.net> | 2011-04-30 16:21:56 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2011-04-30 16:21:56 +0000 |
| commit | e4dd9264ee8d4a20eef0eec8c8bf8cff2473b46f (patch) | |
| tree | 1804d7456ba8f200c7e329d4e6aa67ce4fb1649f /mesalib/src/gallium/auxiliary/util/u_draw_quad.c | |
| parent | 88a78ebea08af461224f815a8380ea5c54186f43 (diff) | |
| parent | 0402d388cb9803652c0f9a52ba7dcb6029fdd0b9 (diff) | |
| download | vcxsrv-e4dd9264ee8d4a20eef0eec8c8bf8cff2473b46f.tar.gz vcxsrv-e4dd9264ee8d4a20eef0eec8c8bf8cff2473b46f.tar.bz2 vcxsrv-e4dd9264ee8d4a20eef0eec8c8bf8cff2473b46f.zip | |
svn merge ^/branches/released .
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_draw_quad.c')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_draw_quad.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_draw_quad.c b/mesalib/src/gallium/auxiliary/util/u_draw_quad.c new file mode 100644 index 000000000..371fefb9e --- /dev/null +++ b/mesalib/src/gallium/auxiliary/util/u_draw_quad.c @@ -0,0 +1,135 @@ +/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+#include "util/u_draw_quad.h"
+#include "util/u_memory.h"
+#include "cso_cache/cso_context.h"
+
+
+/**
+ * Draw a simple vertex buffer / primitive.
+ * Limited to float[4] vertex attribs, tightly packed.
+ */
+void
+util_draw_vertex_buffer(struct pipe_context *pipe,
+ struct cso_context *cso,
+ struct pipe_resource *vbuf,
+ uint offset,
+ uint prim_type,
+ uint num_verts,
+ uint num_attribs)
+{
+ struct pipe_vertex_buffer vbuffer;
+
+ assert(num_attribs <= PIPE_MAX_ATTRIBS);
+
+ /* tell pipe about the vertex buffer */
+ memset(&vbuffer, 0, sizeof(vbuffer));
+ vbuffer.buffer = vbuf;
+ vbuffer.stride = num_attribs * 4 * sizeof(float); /* vertex size */
+ vbuffer.buffer_offset = offset;
+
+ if (cso) {
+ cso_set_vertex_buffers(cso, 1, &vbuffer);
+ } else {
+ pipe->set_vertex_buffers(pipe, 1, &vbuffer);
+ }
+
+ /* note: vertex elements already set by caller */
+
+ /* draw */
+ util_draw_arrays(pipe, prim_type, 0, num_verts);
+}
+
+
+
+/**
+ * Draw screen-aligned textured quad.
+ * Note: this isn't especially efficient.
+ */
+void
+util_draw_texquad(struct pipe_context *pipe, struct cso_context *cso,
+ float x0, float y0, float x1, float y1, float z)
+{
+ uint numAttribs = 2, i, j;
+ uint vertexBytes = 4 * (4 * numAttribs * sizeof(float));
+ struct pipe_resource *vbuf = NULL;
+ float *v = NULL;
+
+ v = MALLOC(vertexBytes);
+ if (v == NULL)
+ goto out;
+
+ /*
+ * Load vertex buffer
+ */
+ for (i = j = 0; i < 4; i++) {
+ v[j + 2] = z; /* z */
+ v[j + 3] = 1.0; /* w */
+ v[j + 6] = 0.0; /* r */
+ v[j + 7] = 1.0; /* q */
+ j += 8;
+ }
+
+ v[0] = x0;
+ v[1] = y0;
+ v[4] = 0.0; /*s*/
+ v[5] = 0.0; /*t*/
+
+ v[8] = x1;
+ v[9] = y0;
+ v[12] = 1.0;
+ v[13] = 0.0;
+
+ v[16] = x1;
+ v[17] = y1;
+ v[20] = 1.0;
+ v[21] = 1.0;
+
+ v[24] = x0;
+ v[25] = y1;
+ v[28] = 0.0;
+ v[29] = 1.0;
+
+ vbuf = pipe_user_buffer_create(pipe->screen, v, vertexBytes,
+ PIPE_BIND_VERTEX_BUFFER);
+ if (!vbuf)
+ goto out;
+
+ util_draw_vertex_buffer(pipe, cso, vbuf, 0, PIPE_PRIM_TRIANGLE_FAN, 4, 2);
+
+out:
+ if (vbuf)
+ pipe_resource_reference(&vbuf, NULL);
+
+ if (v)
+ FREE(v);
+}
|