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authorEric Anholt <anholt@FreeBSD.org>2006-08-09 19:14:05 +0000
committerEric Anholt <anholt@FreeBSD.org>2006-08-09 19:14:05 +0000
commit9f344b3e7d6e23674dd4747faec253f103563b36 (patch)
treee5df3c1ab9a424831d4a4363567a87ff91cc0581 /src/mesa/drivers/dri/i965/intel_regions.c
parent7b52bed98729a05feab28f6d2b0677e4f84c44c3 (diff)
Add Intel i965G/Q DRI driver.
This driver comes from Tungsten Graphics, with a few further modifications by Intel.
Diffstat (limited to 'src/mesa/drivers/dri/i965/intel_regions.c')
-rw-r--r--src/mesa/drivers/dri/i965/intel_regions.c289
1 files changed, 289 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_regions.c b/src/mesa/drivers/dri/i965/intel_regions.c
new file mode 100644
index 0000000000..e2cb427304
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/intel_regions.c
@@ -0,0 +1,289 @@
+/**************************************************************************
+ *
+ * Copyright 2006 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.
+ *
+ **************************************************************************/
+
+/* Provide additional functionality on top of bufmgr buffers:
+ * - 2d semantics and blit operations
+ * - refcounting of buffers for multiple images in a buffer.
+ * - refcounting of buffer mappings.
+ * - some logic for moving the buffers to the best memory pools for
+ * given operations.
+ *
+ * Most of this is to make it easier to implement the fixed-layout
+ * mipmap tree required by intel hardware in the face of GL's
+ * programming interface where each image can be specifed in random
+ * order and it isn't clear what layout the tree should have until the
+ * last moment.
+ */
+
+#include "intel_context.h"
+#include "intel_regions.h"
+#include "intel_blit.h"
+#include "bufmgr.h"
+#include "imports.h"
+
+/* XXX: Thread safety?
+ */
+GLubyte *intel_region_map(struct intel_context *intel, struct intel_region *region)
+{
+ DBG("%s\n", __FUNCTION__);
+ if (!region->map_refcount++) {
+ region->map = bmMapBuffer(intel, region->buffer, 0);
+ }
+
+ return region->map;
+}
+
+void intel_region_unmap(struct intel_context *intel,
+ struct intel_region *region)
+{
+ DBG("%s\n", __FUNCTION__);
+ if (!--region->map_refcount) {
+ bmUnmapBufferAUB(intel, region->buffer, 0, 0);
+ region->map = NULL;
+ }
+}
+
+struct intel_region *intel_region_alloc( struct intel_context *intel,
+ GLuint cpp,
+ GLuint pitch,
+ GLuint height )
+{
+ struct intel_region *region = calloc(sizeof(*region), 1);
+
+ DBG("%s %dx%dx%d == 0x%x bytes\n", __FUNCTION__,
+ cpp, pitch, height, cpp*pitch*height);
+
+ region->cpp = cpp;
+ region->pitch = pitch;
+ region->height = height; /* needed? */
+ region->refcount = 1;
+
+ bmGenBuffers(intel, "tex", 1, &region->buffer);
+ bmBufferData(intel, region->buffer, pitch * cpp * height, NULL, 0);
+
+ return region;
+}
+
+void intel_region_reference( struct intel_region **dst,
+ struct intel_region *src)
+{
+ src->refcount++;
+ assert(*dst == NULL);
+ *dst = src;
+}
+
+void intel_region_release( struct intel_context *intel,
+ struct intel_region **region )
+{
+ if (!*region)
+ return;
+
+ DBG("%s %d\n", __FUNCTION__, (*region)->refcount-1);
+
+ if (--(*region)->refcount == 0) {
+ assert((*region)->map_refcount == 0);
+ bmDeleteBuffers(intel, 1, &(*region)->buffer);
+ free(*region);
+ }
+ *region = NULL;
+}
+
+
+struct intel_region *intel_region_create_static( struct intel_context *intel,
+ GLuint mem_type,
+ GLuint offset,
+ void *virtual,
+ GLuint cpp,
+ GLuint pitch,
+ GLuint height,
+ GLboolean tiled )
+{
+ struct intel_region *region = calloc(sizeof(*region), 1);
+ GLuint size = cpp * pitch * height;
+ GLint pool;
+
+ DBG("%s\n", __FUNCTION__);
+
+ region->cpp = cpp;
+ region->pitch = pitch;
+ region->height = height; /* needed? */
+ region->refcount = 1;
+ region->tiled = tiled;
+
+ /* Recipe for creating a static buffer - create a static pool with
+ * the right offset and size, generate a buffer and use a special
+ * call to bind it to all of the memory in that pool.
+ */
+ pool = bmInitPool(intel, offset, virtual, size,
+ (BM_MEM_AGP |
+ BM_NO_UPLOAD |
+ BM_NO_EVICT |
+ BM_NO_MOVE));
+ if (pool < 0) {
+ _mesa_printf("bmInitPool failed for static region\n");
+ exit(1);
+ }
+
+ region->buffer = bmGenBufferStatic(intel, pool);
+
+ return region;
+}
+
+
+
+
+void _mesa_copy_rect( GLubyte *dst,
+ GLuint cpp,
+ GLuint dst_pitch,
+ GLuint dst_x,
+ GLuint dst_y,
+ GLuint width,
+ GLuint height,
+ const GLubyte *src,
+ GLuint src_pitch,
+ GLuint src_x,
+ GLuint src_y )
+{
+ GLuint i;
+
+ dst_pitch *= cpp;
+ src_pitch *= cpp;
+ dst += dst_x * cpp;
+ src += src_x * cpp;
+ dst += dst_y * dst_pitch;
+ src += src_y * dst_pitch;
+ width *= cpp;
+
+ if (width == dst_pitch &&
+ width == src_pitch)
+ do_memcpy(dst, src, height * width);
+ else {
+ for (i = 0; i < height; i++) {
+ do_memcpy(dst, src, width);
+ dst += dst_pitch;
+ src += src_pitch;
+ }
+ }
+}
+
+
+/* Upload data to a rectangular sub-region. Lots of choices how to do this:
+ *
+ * - memcpy by span to current destination
+ * - upload data as new buffer and blit
+ *
+ * Currently always memcpy.
+ */
+void intel_region_data(struct intel_context *intel,
+ struct intel_region *dst,
+ GLuint dst_offset,
+ GLuint dstx, GLuint dsty,
+ const void *src, GLuint src_pitch,
+ GLuint srcx, GLuint srcy,
+ GLuint width, GLuint height)
+{
+
+ DBG("%s\n", __FUNCTION__);
+
+ if (width == dst->pitch &&
+ width == src_pitch &&
+ dst_offset == 0 &&
+ height == dst->height &&
+ srcx == 0 &&
+ srcy == 0)
+ {
+ bmBufferDataAUB(intel,
+ dst->buffer,
+ dst->cpp * width * dst->height,
+ src,
+ 0,
+ 0, /* DW_NOTYPE */
+ 0);
+ }
+ else {
+ assert (dst_offset + dstx + width +
+ (dsty + height - 1) * dst->pitch * dst->cpp <=
+ dst->pitch * dst->cpp * dst->height);
+
+ _mesa_copy_rect(intel_region_map(intel, dst) + dst_offset,
+ dst->cpp,
+ dst->pitch,
+ dstx, dsty,
+ width, height,
+ src,
+ src_pitch,
+ srcx, srcy);
+
+ intel_region_unmap(intel, dst);
+ }
+}
+
+/* Copy rectangular sub-regions. Need better logic about when to
+ * push buffers into AGP - will currently do so whenever possible.
+ */
+void intel_region_copy( struct intel_context *intel,
+ struct intel_region *dst,
+ GLuint dst_offset,
+ GLuint dstx, GLuint dsty,
+ struct intel_region *src,
+ GLuint src_offset,
+ GLuint srcx, GLuint srcy,
+ GLuint width, GLuint height )
+{
+ DBG("%s\n", __FUNCTION__);
+
+ assert(src->cpp == dst->cpp);
+
+ intelEmitCopyBlit(intel,
+ dst->cpp,
+ src->pitch, src->buffer, src_offset, src->tiled,
+ dst->pitch, dst->buffer, dst_offset, dst->tiled,
+ srcx, srcy,
+ dstx, dsty,
+ width, height);
+}
+
+/* Fill a rectangular sub-region. Need better logic about when to
+ * push buffers into AGP - will currently do so whenever possible.
+ */
+void intel_region_fill( struct intel_context *intel,
+ struct intel_region *dst,
+ GLuint dst_offset,
+ GLuint dstx, GLuint dsty,
+ GLuint width, GLuint height,
+ GLuint color )
+{
+ DBG("%s\n", __FUNCTION__);
+
+ intelEmitFillBlit(intel,
+ dst->cpp,
+ dst->pitch, dst->buffer, dst_offset, dst->tiled,
+ dstx, dsty,
+ width, height,
+ color );
+}
+