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-rw-r--r--src/gallium/drivers/i915/i915_surface.c223
1 files changed, 223 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915/i915_surface.c b/src/gallium/drivers/i915/i915_surface.c
new file mode 100644
index 0000000000..f40876e708
--- /dev/null
+++ b/src/gallium/drivers/i915/i915_surface.c
@@ -0,0 +1,223 @@
+/**************************************************************************
+ *
+ * Copyright 2003 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 "i915_surface.h"
+#include "i915_resource.h"
+#include "i915_blit.h"
+#include "i915_reg.h"
+#include "i915_screen.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+#include "util/u_math.h"
+#include "util/u_format.h"
+#include "util/u_memory.h"
+#include "util/u_pack_color.h"
+
+
+/* Assumes all values are within bounds -- no checking at this level -
+ * do it higher up if required.
+ */
+static void
+i915_surface_copy(struct pipe_context *pipe,
+ struct pipe_resource *dst, struct pipe_subresource subdst,
+ unsigned dstx, unsigned dsty, unsigned dstz,
+ struct pipe_resource *src, struct pipe_subresource subsrc,
+ unsigned srcx, unsigned srcy, unsigned srcz,
+ unsigned width, unsigned height)
+{
+ struct i915_texture *dst_tex = i915_texture(dst);
+ struct i915_texture *src_tex = i915_texture(src);
+ struct pipe_resource *dpt = &dst_tex->b.b;
+ struct pipe_resource *spt = &src_tex->b.b;
+ unsigned dst_offset, src_offset; /* in bytes */
+
+ if (dst->target == PIPE_TEXTURE_CUBE) {
+ dst_offset = dst_tex->image_offset[subdst.level][subdst.face];
+ }
+ else if (dst->target == PIPE_TEXTURE_3D) {
+ dst_offset = dst_tex->image_offset[subdst.level][dstz];
+ }
+ else {
+ dst_offset = dst_tex->image_offset[subdst.level][0];
+ assert(subdst.face == 0);
+ assert(dstz == 0);
+ }
+ if (src->target == PIPE_TEXTURE_CUBE) {
+ src_offset = src_tex->image_offset[subsrc.level][subsrc.face];
+ }
+ else if (src->target == PIPE_TEXTURE_3D) {
+ src_offset = src_tex->image_offset[subsrc.level][srcz];
+ }
+ else {
+ src_offset = src_tex->image_offset[subsrc.level][0];
+ assert(subsrc.face == 0);
+ assert(srcz == 0);
+ }
+
+
+ assert( dst != src );
+ assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
+ assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
+ assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
+ assert( util_format_get_blockwidth(dpt->format) == 1 );
+ assert( util_format_get_blockheight(dpt->format) == 1 );
+
+ i915_copy_blit( i915_context(pipe),
+ util_format_get_blocksize(dpt->format),
+ (unsigned short) src_tex->stride, src_tex->buffer, src_offset,
+ (unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
+ (short) srcx, (short) srcy, (short) dstx, (short) dsty, (short) width, (short) height );
+}
+
+
+static void
+i915_clear_render_target(struct pipe_context *pipe,
+ struct pipe_surface *dst,
+ const float *rgba,
+ unsigned dstx, unsigned dsty,
+ unsigned width, unsigned height)
+{
+ struct i915_texture *tex = i915_texture(dst->texture);
+ struct pipe_resource *pt = &tex->b.b;
+ union util_color uc;
+
+ assert(util_format_get_blockwidth(pt->format) == 1);
+ assert(util_format_get_blockheight(pt->format) == 1);
+
+ util_pack_color(rgba, dst->format, &uc);
+ i915_fill_blit( i915_context(pipe),
+ util_format_get_blocksize(pt->format),
+ XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
+ (unsigned short) tex->stride,
+ tex->buffer, dst->offset,
+ (short) dstx, (short) dsty,
+ (short) width, (short) height,
+ uc.ui );
+}
+
+static void
+i915_clear_depth_stencil(struct pipe_context *pipe,
+ struct pipe_surface *dst,
+ unsigned clear_flags,
+ double depth,
+ unsigned stencil,
+ unsigned dstx, unsigned dsty,
+ unsigned width, unsigned height)
+{
+ struct i915_texture *tex = i915_texture(dst->texture);
+ struct pipe_resource *pt = &tex->b.b;
+ unsigned packedds;
+ unsigned mask = 0;
+
+ assert(util_format_get_blockwidth(pt->format) == 1);
+ assert(util_format_get_blockheight(pt->format) == 1);
+
+ packedds = util_pack_z_stencil(dst->format, depth, stencil);
+
+ if (clear_flags & PIPE_CLEAR_DEPTH)
+ mask |= XY_COLOR_BLT_WRITE_RGB;
+ /* XXX presumably this does read-modify-write
+ (otherwise this won't work anyway). Hence will only want to
+ do it if really have stencil and it isn't cleared */
+ if ((clear_flags & PIPE_CLEAR_STENCIL) ||
+ (dst->format != PIPE_FORMAT_Z24_UNORM_S8_USCALED))
+ mask |= XY_COLOR_BLT_WRITE_ALPHA;
+
+ i915_fill_blit( i915_context(pipe),
+ util_format_get_blocksize(pt->format),
+ mask,
+ (unsigned short) tex->stride,
+ tex->buffer, dst->offset,
+ (short) dstx, (short) dsty,
+ (short) width, (short) height,
+ packedds );
+}
+
+/*
+ * Screen surface functions
+ */
+
+
+static struct pipe_surface *
+i915_get_tex_surface(struct pipe_screen *screen,
+ struct pipe_resource *pt,
+ unsigned face, unsigned level, unsigned zslice,
+ unsigned flags)
+{
+ struct i915_texture *tex = i915_texture(pt);
+ struct pipe_surface *ps;
+ unsigned offset; /* in bytes */
+
+ if (pt->target == PIPE_TEXTURE_CUBE) {
+ offset = tex->image_offset[level][face];
+ }
+ else if (pt->target == PIPE_TEXTURE_3D) {
+ offset = tex->image_offset[level][zslice];
+ }
+ else {
+ offset = tex->image_offset[level][0];
+ assert(face == 0);
+ assert(zslice == 0);
+ }
+
+ ps = CALLOC_STRUCT(pipe_surface);
+ if (ps) {
+ pipe_reference_init(&ps->reference, 1);
+ pipe_resource_reference(&ps->texture, pt);
+ ps->format = pt->format;
+ ps->width = u_minify(pt->width0, level);
+ ps->height = u_minify(pt->height0, level);
+ ps->offset = offset;
+ ps->usage = flags;
+ }
+ return ps;
+}
+
+static void
+i915_tex_surface_destroy(struct pipe_surface *surf)
+{
+ pipe_resource_reference(&surf->texture, NULL);
+ FREE(surf);
+}
+
+
+void
+i915_init_surface_functions(struct i915_context *i915)
+{
+ i915->base.resource_copy_region = i915_surface_copy;
+ i915->base.clear_render_target = i915_clear_render_target;
+ i915->base.clear_depth_stencil = i915_clear_depth_stencil;
+}
+
+/* No good reason for these to be in the screen.
+ */
+void
+i915_init_screen_surface_functions(struct i915_screen *is)
+{
+ is->base.get_tex_surface = i915_get_tex_surface;
+ is->base.tex_surface_destroy = i915_tex_surface_destroy;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-10 11:18:31 +0000