1 files changed, 136 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_array.c b/src/mesa/drivers/dri/nouveau/nouveau_array.c
new file mode 100644
index 0000000000..17e6d163a0
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nouveau_array.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2009-2010 Francisco Jerez.
+ * 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, sublicense, 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 NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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 "main/bufferobj.h"
+#include "nouveau_driver.h"
+#include "nouveau_array.h"
+#include "nouveau_bufferobj.h"
+
+static void
+get_array_extract(struct nouveau_array *a, extract_u_t *extract_u,
+		  extract_f_t *extract_f)
+{
+#define EXTRACT(in_t, out_t, k)						\
+	({								\
+		auto out_t f(struct nouveau_array *, int, int);		\
+		out_t f(struct nouveau_array *a, int i, int j) {	\
+			in_t x = ((in_t *)(a->buf + i * a->stride))[j];	\
+									\
+			return (out_t)x / (k);				\
+		};							\
+		f;							\
+	});
+
+	switch (a->type) {
+	case GL_BYTE:
+		*extract_u = EXTRACT(char, unsigned, 1);
+		*extract_f = EXTRACT(char, float, SCHAR_MAX);
+		break;
+	case GL_UNSIGNED_BYTE:
+		*extract_u = EXTRACT(unsigned char, unsigned, 1);
+		*extract_f = EXTRACT(unsigned char, float, UCHAR_MAX);
+		break;
+	case GL_SHORT:
+		*extract_u = EXTRACT(short, unsigned, 1);
+		*extract_f = EXTRACT(short, float, SHRT_MAX);
+		break;
+	case GL_UNSIGNED_SHORT:
+		*extract_u = EXTRACT(unsigned short, unsigned, 1);
+		*extract_f = EXTRACT(unsigned short, float, USHRT_MAX);
+		break;
+	case GL_INT:
+		*extract_u = EXTRACT(int, unsigned, 1);
+		*extract_f = EXTRACT(int, float, INT_MAX);
+		break;
+	case GL_UNSIGNED_INT:
+		*extract_u = EXTRACT(unsigned int, unsigned, 1);
+		*extract_f = EXTRACT(unsigned int, float, UINT_MAX);
+		break;
+	case GL_FLOAT:
+		*extract_u = EXTRACT(float, unsigned, 1.0 / UINT_MAX);
+		*extract_f = EXTRACT(float, float, 1);
+		break;
+	default:
+		assert(0);
+	}
+}
+
+void
+nouveau_init_array(struct nouveau_array *a, int attr, int stride,
+		   int fields, int type, struct gl_buffer_object *obj,
+		   const void *ptr, GLboolean map)
+{
+	a->attr = attr;
+	a->stride = stride;
+	a->fields = fields;
+	a->type = type;
+	a->buf = NULL;
+
+	if (obj) {
+		if (nouveau_bufferobj_hw(obj)) {
+			struct nouveau_bufferobj *nbo =
+				to_nouveau_bufferobj(obj);
+
+			nouveau_bo_ref(nbo->bo, &a->bo);
+			a->offset = (intptr_t)ptr;
+
+			if (map) {
+				nouveau_bo_map(a->bo, NOUVEAU_BO_RD);
+				a->buf = a->bo->map + a->offset;
+			}
+
+		} else {
+			nouveau_bo_ref(NULL, &a->bo);
+			a->offset = 0;
+
+			if (map)
+				a->buf = ADD_POINTERS(
+					nouveau_bufferobj_sys(obj), ptr);
+		}
+	}
+
+	if (a->buf)
+		get_array_extract(a, &a->extract_u, &a->extract_f);
+}
+
+void
+nouveau_deinit_array(struct nouveau_array *a)
+{
+	if (a->bo) {
+		if (a->bo->map)
+			nouveau_bo_unmap(a->bo);
+	}
+
+	a->buf = NULL;
+	a->fields = 0;
+}
+
+void
+nouveau_cleanup_array(struct nouveau_array *a)
+{
+	nouveau_deinit_array(a);
+	nouveau_bo_ref(NULL, &a->bo);
+}