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, 158 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/a2xx/fd2_texture.c b/src/gallium/drivers/freedreno/a2xx/fd2_texture.c
new file mode 100644
index 00000000000..c800a869868
--- /dev/null
+++ b/src/gallium/drivers/freedreno/a2xx/fd2_texture.c
@@ -0,0 +1,158 @@
+/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
+
+/*
+ * Copyright (C) 2012-2013 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_inlines.h"
+
+#include "fd2_texture.h"
+#include "fd2_util.h"
+
+static enum sq_tex_clamp
+tex_clamp(unsigned wrap)
+{
+	switch (wrap) {
+	case PIPE_TEX_WRAP_REPEAT:
+		return SQ_TEX_WRAP;
+	case PIPE_TEX_WRAP_CLAMP:
+		return SQ_TEX_CLAMP_HALF_BORDER;
+	case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+		return SQ_TEX_CLAMP_LAST_TEXEL;
+	case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+		return SQ_TEX_CLAMP_BORDER;
+	case PIPE_TEX_WRAP_MIRROR_REPEAT:
+		return SQ_TEX_MIRROR;
+	case PIPE_TEX_WRAP_MIRROR_CLAMP:
+		return SQ_TEX_MIRROR_ONCE_HALF_BORDER;
+	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
+		return SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
+	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
+		return SQ_TEX_MIRROR_ONCE_BORDER;
+	default:
+		DBG("invalid wrap: %u", wrap);
+		return 0;
+	}
+}
+
+static enum sq_tex_filter
+tex_filter(unsigned filter)
+{
+	switch (filter) {
+	case PIPE_TEX_FILTER_NEAREST:
+		return SQ_TEX_FILTER_POINT;
+	case PIPE_TEX_FILTER_LINEAR:
+		return SQ_TEX_FILTER_BILINEAR;
+	default:
+		DBG("invalid filter: %u", filter);
+		return 0;
+	}
+}
+
+static void *
+fd2_sampler_state_create(struct pipe_context *pctx,
+		const struct pipe_sampler_state *cso)
+{
+	struct fd2_sampler_stateobj *so = CALLOC_STRUCT(fd2_sampler_stateobj);
+
+	if (!so)
+		return NULL;
+
+	so->base = *cso;
+
+	/* SQ_TEX0_PITCH() must be OR'd in later when we know the bound texture: */
+	so->tex0 =
+		A2XX_SQ_TEX_0_CLAMP_X(tex_clamp(cso->wrap_s)) |
+		A2XX_SQ_TEX_0_CLAMP_Y(tex_clamp(cso->wrap_t)) |
+		A2XX_SQ_TEX_0_CLAMP_Z(tex_clamp(cso->wrap_r));
+
+	so->tex3 =
+		A2XX_SQ_TEX_3_XY_MAG_FILTER(tex_filter(cso->mag_img_filter)) |
+		A2XX_SQ_TEX_3_XY_MIN_FILTER(tex_filter(cso->min_img_filter));
+
+	so->tex4 = 0x00000000; /* ??? */
+	so->tex5 = 0x00000200; /* ??? */
+
+	return so;
+}
+
+static struct pipe_sampler_view *
+fd2_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
+		const struct pipe_sampler_view *cso)
+{
+	struct fd2_pipe_sampler_view *so = CALLOC_STRUCT(fd2_pipe_sampler_view);
+	struct fd_resource *rsc = fd_resource(prsc);
+
+	if (!so)
+		return NULL;
+
+	so->base = *cso;
+	pipe_reference(NULL, &prsc->reference);
+	so->base.texture = prsc;
+	so->base.reference.count = 1;
+	so->base.context = pctx;
+
+	so->tex_resource =  rsc;
+	so->fmt = fd2_pipe2surface(cso->format);
+
+	so->tex0 = A2XX_SQ_TEX_0_PITCH(rsc->pitch);
+	so->tex2 =
+		A2XX_SQ_TEX_2_HEIGHT(prsc->height0 - 1) |
+		A2XX_SQ_TEX_2_WIDTH(prsc->width0 - 1);
+	so->tex3 = fd2_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
+			cso->swizzle_b, cso->swizzle_a);
+
+	return &so->base;
+}
+
+/* map gallium sampler-id to hw const-idx.. adreno uses a flat address
+ * space of samplers (const-idx), so we need to map the gallium sampler-id
+ * which is per-shader to a global const-idx space.
+ *
+ * Fragment shader sampler maps directly to const-idx, and vertex shader
+ * is offset by the # of fragment shader samplers.  If the # of fragment
+ * shader samplers changes, this shifts the vertex shader indexes.
+ *
+ * TODO maybe we can do frag shader 0..N  and vert shader N..0 to avoid
+ * this??
+ */
+unsigned
+fd2_get_const_idx(struct fd_context *ctx, struct fd_texture_stateobj *tex,
+		unsigned samp_id)
+{
+	if (tex == &ctx->fragtex)
+		return samp_id;
+	return samp_id + ctx->fragtex.num_samplers;
+}
+
+void
+fd2_texture_init(struct pipe_context *pctx)
+{
+	pctx->create_sampler_state = fd2_sampler_state_create;
+	pctx->create_sampler_view = fd2_sampler_view_create;
+}