r600g: start splitting out common code from eg/r600.

no point duplicating code that doesn't touch hw, also make it easier
to spot mistakes

1 files changed, 211 insertions, 0 deletions

diff --git a/src/gallium/drivers/r600/r600_translate.c b/src/gallium/drivers/r600/r600_translate.c
new file mode 100644
index 00000000000..9a07cf2073f
--- /dev/null
+++ b/src/gallium/drivers/r600/r600_translate.c
@@ -0,0 +1,211 @@
+/*
+ * Copyright 2010 Red Hat Inc.
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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.
+ *
+ * Authors: Dave Airlie <[email protected]>
+ */
+#include "translate/translate_cache.h"
+#include "translate/translate.h"
+#include <pipebuffer/pb_buffer.h>
+#include <util/u_index_modify.h>
+#include "r600_pipe.h"
+
+void r600_begin_vertex_translate(struct r600_pipe_context *rctx)
+{
+	struct pipe_context *pipe = &rctx->context;
+	struct translate_key key = {0};
+	struct translate_element *te;
+	unsigned tr_elem_index[PIPE_MAX_ATTRIBS] = {0};
+	struct translate *tr;
+	struct r600_vertex_element *ve = rctx->vertex_elements;
+	boolean vb_translated[PIPE_MAX_ATTRIBS] = {0};
+	void *vb_map[PIPE_MAX_ATTRIBS] = {0}, *out_map;
+	struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0}, *out_transfer;
+	struct pipe_resource *out_buffer;
+	unsigned i, num_verts;
+
+	/* Initialize the translate key, i.e. the recipe how vertices should be
+	 * translated. */
+	for (i = 0; i < ve->count; i++) {
+		struct pipe_vertex_buffer *vb =
+			&rctx->vertex_buffer[ve->elements[i].vertex_buffer_index];
+		enum pipe_format output_format = ve->hw_format[i];
+		unsigned output_format_size = ve->hw_format_size[i];
+
+		/* Check for support. */
+		if (ve->elements[i].src_format == ve->hw_format[i] &&
+		    (vb->buffer_offset + ve->elements[i].src_offset) % 4 == 0 &&
+		    vb->stride % 4 == 0) {
+			continue;
+		}
+
+		/* Workaround for translate: output floats instead of halfs. */
+		switch (output_format) {
+		case PIPE_FORMAT_R16_FLOAT:
+			output_format = PIPE_FORMAT_R32_FLOAT;
+			output_format_size = 4;
+			break;
+		case PIPE_FORMAT_R16G16_FLOAT:
+			output_format = PIPE_FORMAT_R32G32_FLOAT;
+			output_format_size = 8;
+			break;
+		case PIPE_FORMAT_R16G16B16_FLOAT:
+			output_format = PIPE_FORMAT_R32G32B32_FLOAT;
+			output_format_size = 12;
+			break;
+		case PIPE_FORMAT_R16G16B16A16_FLOAT:
+			output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+			output_format_size = 16;
+			break;
+		default:;
+		}
+
+		/* Add this vertex element. */
+		te = &key.element[key.nr_elements];
+		/*te->type;
+		  te->instance_divisor;*/
+		te->input_buffer = ve->elements[i].vertex_buffer_index;
+		te->input_format = ve->elements[i].src_format;
+		te->input_offset = vb->buffer_offset + ve->elements[i].src_offset;
+		te->output_format = output_format;
+		te->output_offset = key.output_stride;
+
+		key.output_stride += output_format_size;
+		vb_translated[ve->elements[i].vertex_buffer_index] = TRUE;
+		tr_elem_index[i] = key.nr_elements;
+		key.nr_elements++;
+	}
+
+	/* Get a translate object. */
+	tr = translate_cache_find(rctx->tran.translate_cache, &key);
+
+	/* Map buffers we want to translate. */
+	for (i = 0; i < rctx->nvertex_buffer; i++) {
+		if (vb_translated[i]) {
+			struct pipe_vertex_buffer *vb = &rctx->vertex_buffer[i];
+
+			vb_map[i] = pipe_buffer_map(pipe, vb->buffer,
+						    PIPE_TRANSFER_READ, &vb_transfer[i]);
+
+			tr->set_buffer(tr, i, vb_map[i], vb->stride, vb->max_index);
+		}
+	}
+
+	/* Create and map the output buffer. */
+	num_verts = rctx->vb_max_index + 1;
+
+	out_buffer = pipe_buffer_create(&rctx->screen->screen,
+					PIPE_BIND_VERTEX_BUFFER,
+					key.output_stride * num_verts);
+
+	out_map = pipe_buffer_map(pipe, out_buffer, PIPE_TRANSFER_WRITE,
+				  &out_transfer);
+
+	/* Translate. */
+	tr->run(tr, 0, num_verts, 0, out_map);
+
+	/* Unmap all buffers. */
+	for (i = 0; i < rctx->nvertex_buffer; i++) {
+		if (vb_translated[i]) {
+			pipe_buffer_unmap(pipe, rctx->vertex_buffer[i].buffer,
+					  vb_transfer[i]);
+		}
+	}
+
+	pipe_buffer_unmap(pipe, out_buffer, out_transfer);
+
+	/* Setup the new vertex buffer in the first free slot. */
+	for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
+		struct pipe_vertex_buffer *vb = &rctx->vertex_buffer[i];
+
+		if (!vb->buffer) {
+			pipe_resource_reference(&vb->buffer, out_buffer);
+			vb->buffer_offset = 0;
+			vb->max_index = num_verts - 1;
+			vb->stride = key.output_stride;
+			rctx->tran.vb_slot = i;
+			break;
+		}
+	}
+
+	/* Save and replace vertex elements. */
+	{
+		struct pipe_vertex_element new_velems[PIPE_MAX_ATTRIBS];
+
+		rctx->tran.saved_velems = rctx->vertex_elements;
+
+		for (i = 0; i < ve->count; i++) {
+			if (vb_translated[ve->elements[i].vertex_buffer_index]) {
+				te = &key.element[tr_elem_index[i]];
+				new_velems[i].instance_divisor = ve->elements[i].instance_divisor;
+				new_velems[i].src_format = te->output_format;
+				new_velems[i].src_offset = te->output_offset;
+				new_velems[i].vertex_buffer_index = rctx->tran.vb_slot;
+			} else {
+				memcpy(&new_velems[i], &ve->elements[i],
+				       sizeof(struct pipe_vertex_element));
+			}
+		}
+
+		rctx->tran.new_velems =
+			pipe->create_vertex_elements_state(pipe, ve->count, new_velems);
+		pipe->bind_vertex_elements_state(pipe, rctx->tran.new_velems);
+	}
+
+	pipe_resource_reference(&out_buffer, NULL);
+}
+
+void r600_end_vertex_translate(struct r600_pipe_context *rctx)
+{
+	struct pipe_context *pipe = &rctx->context;
+
+	/* Restore vertex elements. */
+	pipe->bind_vertex_elements_state(pipe, rctx->tran.saved_velems);
+	pipe->delete_vertex_elements_state(pipe, rctx->tran.new_velems);
+
+	/* Delete the now-unused VBO. */
+	pipe_resource_reference(&rctx->vertex_buffer[rctx->tran.vb_slot].buffer,
+				NULL);
+}
+
+void r600_translate_index_buffer(struct r600_pipe_context *r600,
+					struct pipe_resource **index_buffer,
+					unsigned *index_size,
+					unsigned *start, unsigned count)
+{
+	switch (*index_size) {
+	case 1:
+		util_shorten_ubyte_elts(&r600->context, index_buffer, 0, *start, count);
+		*index_size = 2;
+		*start = 0;
+		break;
+
+	case 2:
+		if (*start % 2 != 0) {
+			util_rebuild_ushort_elts(&r600->context, index_buffer, 0, *start, count);
+			*start = 0;
+		}
+		break;
+
+	case 4:
+		break;
+	}
+}