freedreno: prepare for a3xx

Split the parts that are specific to adreno a2xx series GPUs from the
parts that will be in common with a3xx, so that a3xx support can be
added more cleanly.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

1 files changed, 212 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_draw.c b/src/gallium/drivers/freedreno/freedreno_draw.c
new file mode 100644
index 00000000000..2b7c16847dc
--- /dev/null
+++ b/src/gallium/drivers/freedreno/freedreno_draw.c
@@ -0,0 +1,212 @@
+/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
+
+/*
+ * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
+ *
+ * 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.
+ *
+ * Authors:
+ *    Rob Clark <robclark@freedesktop.org>
+ */
+
+#include "pipe/p_state.h"
+#include "util/u_string.h"
+#include "util/u_memory.h"
+#include "util/u_prim.h"
+#include "util/u_format.h"
+
+#include "freedreno_draw.h"
+#include "freedreno_context.h"
+#include "freedreno_state.h"
+#include "freedreno_resource.h"
+#include "freedreno_util.h"
+
+
+static enum pc_di_primtype
+mode2primtype(unsigned mode)
+{
+	switch (mode) {
+	case PIPE_PRIM_POINTS:         return DI_PT_POINTLIST;
+	case PIPE_PRIM_LINES:          return DI_PT_LINELIST;
+	case PIPE_PRIM_LINE_STRIP:     return DI_PT_LINESTRIP;
+	case PIPE_PRIM_TRIANGLES:      return DI_PT_TRILIST;
+	case PIPE_PRIM_TRIANGLE_STRIP: return DI_PT_TRISTRIP;
+	case PIPE_PRIM_TRIANGLE_FAN:   return DI_PT_TRIFAN;
+	case PIPE_PRIM_QUADS:          return DI_PT_QUADLIST;
+	case PIPE_PRIM_QUAD_STRIP:     return DI_PT_QUADSTRIP;
+	case PIPE_PRIM_POLYGON:        return DI_PT_POLYGON;
+	}
+	DBG("unsupported mode: (%s) %d", u_prim_name(mode), mode);
+	assert(0);
+	return DI_PT_NONE;
+}
+
+static enum pc_di_index_size
+size2indextype(unsigned index_size)
+{
+	switch (index_size) {
+	case 1: return INDEX_SIZE_8_BIT;
+	case 2: return INDEX_SIZE_16_BIT;
+	case 4: return INDEX_SIZE_32_BIT;
+	}
+	DBG("unsupported index size: %d", index_size);
+	assert(0);
+	return INDEX_SIZE_IGN;
+}
+
+/* this is same for a2xx/a3xx, so split into helper: */
+void
+fd_draw_emit(struct fd_context *ctx, const struct pipe_draw_info *info)
+{
+	struct fd_ringbuffer *ring = ctx->ring;
+	struct pipe_index_buffer *idx = &ctx->indexbuf;
+	struct fd_bo *idx_bo = NULL;
+	enum pc_di_index_size idx_type = INDEX_SIZE_IGN;
+	enum pc_di_src_sel src_sel;
+	uint32_t idx_size, idx_offset;
+
+	if (info->indexed) {
+		assert(!idx->user_buffer);
+
+		idx_bo = fd_resource(idx->buffer)->bo;
+		idx_type = size2indextype(idx->index_size);
+		idx_size = idx->index_size * info->count;
+		idx_offset = idx->offset;
+		src_sel = DI_SRC_SEL_DMA;
+	} else {
+		idx_bo = NULL;
+		idx_type = INDEX_SIZE_IGN;
+		idx_size = 0;
+		idx_offset = 0;
+		src_sel = DI_SRC_SEL_AUTO_INDEX;
+	}
+
+	OUT_PKT3(ring, CP_DRAW_INDX, info->indexed ? 5 : 3);
+	OUT_RING(ring, 0x00000000);        /* viz query info. */
+	OUT_RING(ring, DRAW(mode2primtype(info->mode),
+			src_sel, idx_type, IGNORE_VISIBILITY));
+	OUT_RING(ring, info->count);       /* NumIndices */
+	if (info->indexed) {
+		OUT_RELOC(ring, idx_bo, idx_offset, 0);
+		OUT_RING (ring, idx_size);
+	}
+}
+
+static void
+fd_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
+{
+	struct fd_context *ctx = fd_context(pctx);
+	struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
+	unsigned buffers;
+
+	/* if we supported transform feedback, we'd have to disable this: */
+	if (((ctx->scissor.maxx - ctx->scissor.minx) *
+			(ctx->scissor.maxy - ctx->scissor.miny)) == 0) {
+		return;
+	}
+
+	ctx->needs_flush = true;
+
+	fd_resource(pfb->cbufs[0]->texture)->dirty = true;
+
+	/* figure out the buffers we need: */
+	buffers = FD_BUFFER_COLOR;
+	if (fd_depth_enabled(ctx)) {
+		buffers |= FD_BUFFER_DEPTH;
+		fd_resource(pfb->zsbuf->texture)->dirty = true;
+	}
+	if (fd_stencil_enabled(ctx)) {
+		buffers |= FD_BUFFER_STENCIL;
+		fd_resource(pfb->zsbuf->texture)->dirty = true;
+	}
+
+	/* any buffers that haven't been cleared, we need to restore: */
+	ctx->restore |= buffers & (FD_BUFFER_ALL & ~ctx->cleared);
+	/* and any buffers used, need to be resolved: */
+	ctx->resolve |= buffers;
+
+	ctx->draw(ctx, info);
+}
+
+/* TODO figure out how to make better use of existing state mechanism
+ * for clear (and possibly gmem->mem / mem->gmem) so we can (a) keep
+ * track of what state really actually changes, and (b) reduce the code
+ * in the a2xx/a3xx parts.
+ */
+
+static void
+fd_clear(struct pipe_context *pctx, unsigned buffers,
+		const union pipe_color_union *color, double depth, unsigned stencil)
+{
+	struct fd_context *ctx = fd_context(pctx);
+	struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
+
+	ctx->cleared |= buffers;
+	ctx->resolve |= buffers;
+	ctx->needs_flush = true;
+
+	if (buffers & PIPE_CLEAR_COLOR)
+		fd_resource(pfb->cbufs[0]->texture)->dirty = true;
+
+	if (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))
+		fd_resource(pfb->zsbuf->texture)->dirty = true;
+
+	DBG("%x depth=%f, stencil=%u (%s/%s)", buffers, depth, stencil,
+			util_format_name(pfb->cbufs[0]->format),
+			pfb->zsbuf ? util_format_name(pfb->zsbuf->format) : "none");
+
+	ctx->clear(ctx, buffers, color, depth, stencil);
+
+	ctx->dirty |= FD_DIRTY_ZSA |
+			FD_DIRTY_RASTERIZER |
+			FD_DIRTY_SAMPLE_MASK |
+			FD_DIRTY_PROG |
+			FD_DIRTY_CONSTBUF |
+			FD_DIRTY_BLEND;
+
+	if (fd_mesa_debug & FD_DBG_DCLEAR)
+		ctx->dirty = 0xffffffff;
+}
+
+static void
+fd_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps,
+		const union pipe_color_union *color,
+		unsigned x, unsigned y, unsigned w, unsigned h)
+{
+	DBG("TODO: x=%u, y=%u, w=%u, h=%u", x, y, w, h);
+}
+
+static void
+fd_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps,
+		unsigned buffers, double depth, unsigned stencil,
+		unsigned x, unsigned y, unsigned w, unsigned h)
+{
+	DBG("TODO: buffers=%u, depth=%f, stencil=%u, x=%u, y=%u, w=%u, h=%u",
+			buffers, depth, stencil, x, y, w, h);
+}
+
+void
+fd_draw_init(struct pipe_context *pctx)
+{
+	pctx->draw_vbo = fd_draw_vbo;
+	pctx->clear = fd_clear;
+	pctx->clear_render_target = fd_clear_render_target;
+	pctx->clear_depth_stencil = fd_clear_depth_stencil;
+}