vc4: Move the blit code to a separate file.

There will be other blit code showing up, and it seems like the place
you'd look.

1 files changed, 90 insertions, 0 deletions

diff --git a/src/gallium/drivers/vc4/vc4_blit.c b/src/gallium/drivers/vc4/vc4_blit.c
new file mode 100644
index 00000000000..5c98fb612e0
--- /dev/null
+++ b/src/gallium/drivers/vc4/vc4_blit.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright © 2015 Broadcom
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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 "util/u_format.h"
+#include "util/u_surface.h"
+#include "util/u_blitter.h"
+#include "vc4_context.h"
+
+static bool
+vc4_render_blit(struct pipe_context *ctx, struct pipe_blit_info *info)
+{
+        struct vc4_context *vc4 = vc4_context(ctx);
+
+        if (!util_blitter_is_blit_supported(vc4->blitter, info)) {
+                fprintf(stderr, "blit unsupported %s -> %s",
+                    util_format_short_name(info->src.resource->format),
+                    util_format_short_name(info->dst.resource->format));
+                return false;
+        }
+
+        util_blitter_save_vertex_buffer_slot(vc4->blitter, vc4->vertexbuf.vb);
+        util_blitter_save_vertex_elements(vc4->blitter, vc4->vtx);
+        util_blitter_save_vertex_shader(vc4->blitter, vc4->prog.bind_vs);
+        util_blitter_save_rasterizer(vc4->blitter, vc4->rasterizer);
+        util_blitter_save_viewport(vc4->blitter, &vc4->viewport);
+        util_blitter_save_scissor(vc4->blitter, &vc4->scissor);
+        util_blitter_save_fragment_shader(vc4->blitter, vc4->prog.bind_fs);
+        util_blitter_save_blend(vc4->blitter, vc4->blend);
+        util_blitter_save_depth_stencil_alpha(vc4->blitter, vc4->zsa);
+        util_blitter_save_stencil_ref(vc4->blitter, &vc4->stencil_ref);
+        util_blitter_save_sample_mask(vc4->blitter, vc4->sample_mask);
+        util_blitter_save_framebuffer(vc4->blitter, &vc4->framebuffer);
+        util_blitter_save_fragment_sampler_states(vc4->blitter,
+                        vc4->fragtex.num_samplers,
+                        (void **)vc4->fragtex.samplers);
+        util_blitter_save_fragment_sampler_views(vc4->blitter,
+                        vc4->fragtex.num_textures, vc4->fragtex.textures);
+
+        util_blitter_blit(vc4->blitter, info);
+
+        return true;
+}
+
+/* Optimal hardware path for blitting pixels.
+ * Scaling, format conversion, up- and downsampling (resolve) are allowed.
+ */
+void
+vc4_blit(struct pipe_context *pctx, const struct pipe_blit_info *blit_info)
+{
+        struct pipe_blit_info info = *blit_info;
+
+        if (info.src.resource->nr_samples > 1 &&
+            info.dst.resource->nr_samples <= 1 &&
+            !util_format_is_depth_or_stencil(info.src.resource->format) &&
+            !util_format_is_pure_integer(info.src.resource->format)) {
+                fprintf(stderr, "color resolve unimplemented");
+                return;
+        }
+
+        if (util_try_blit_via_copy_region(pctx, &info)) {
+                return; /* done */
+        }
+
+        if (info.mask & PIPE_MASK_S) {
+                fprintf(stderr, "cannot blit stencil, skipping");
+                info.mask &= ~PIPE_MASK_S;
+        }
+
+        vc4_render_blit(pctx, &info);
+}