etnaviv: gallium driver for Vivante GPUs

This driver supports a wide range of Vivante IP cores like GC880,
GC1000, GC2000 and GC3000.

Changes from V1 -> V2:
 - added missing files to actually integrate the driver into build system.
 - adapted driver to new renderonly API

Signed-off-by: Christian Gmeiner <[email protected]>
Signed-off-by: Lucas Stach <[email protected]>
Signed-off-by: Philipp Zabel <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
Signed-off-by: Russell King <[email protected]>
Signed-off-by: Wladimir J. van der Laan <[email protected]>
Acked-by: Emil Velikov <[email protected]>

1 files changed, 81 insertions, 0 deletions

diff --git a/src/gallium/drivers/etnaviv/etnaviv_rasterizer.c b/src/gallium/drivers/etnaviv/etnaviv_rasterizer.c
new file mode 100644
index 00000000000..4990fd18025
--- /dev/null
+++ b/src/gallium/drivers/etnaviv/etnaviv_rasterizer.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2012-2015 Etnaviv Project
+ *
+ * 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
+ * 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 "etnaviv_rasterizer.h"
+#include "etnaviv_context.h"
+#include "etnaviv_screen.h"
+
+#include "hw/common.xml.h"
+
+#include "etnaviv_translate.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+void *
+etna_rasterizer_state_create(struct pipe_context *pctx,
+                             const struct pipe_rasterizer_state *so)
+{
+   struct etna_rasterizer_state *cs;
+   struct etna_context *ctx = etna_context(pctx);
+
+    /* Disregard flatshading on GC880+, as a HW bug there seem to disable all
+     * varying interpolation if it's enabled */
+   bool flatshade = ctx->screen->model < 880 ? so->flatshade : false;
+
+   if (so->fill_front != so->fill_back)
+      DBG("Different front and back fill mode not supported");
+
+   cs = CALLOC_STRUCT(etna_rasterizer_state);
+   if (!cs)
+      return NULL;
+
+   cs->base = *so;
+
+   cs->PA_CONFIG = (flatshade ? VIVS_PA_CONFIG_SHADE_MODEL_FLAT : VIVS_PA_CONFIG_SHADE_MODEL_SMOOTH) |
+                   translate_cull_face(so->cull_face, so->front_ccw) |
+                   translate_polygon_mode(so->fill_front) |
+                   COND(so->point_quad_rasterization, VIVS_PA_CONFIG_POINT_SPRITE_ENABLE) |
+                   COND(so->point_size_per_vertex, VIVS_PA_CONFIG_POINT_SIZE_ENABLE) |
+                   COND(VIV_FEATURE(ctx->screen, chipMinorFeatures1, WIDE_LINE), VIVS_PA_CONFIG_WIDE_LINE);
+   cs->PA_LINE_WIDTH = fui(so->line_width / 2.0f);
+   cs->PA_POINT_SIZE = fui(so->point_size / 2.0f);
+   cs->SE_DEPTH_SCALE = fui(so->offset_scale);
+   cs->SE_DEPTH_BIAS = fui(so->offset_units) / 65535.0f;
+   cs->SE_CONFIG = COND(so->line_last_pixel, VIVS_SE_CONFIG_LAST_PIXEL_ENABLE);
+   /* XXX anything else? */
+   /* XXX bottom_edge_rule */
+   cs->PA_SYSTEM_MODE =
+      COND(so->half_pixel_center, VIVS_PA_SYSTEM_MODE_UNK0 | VIVS_PA_SYSTEM_MODE_UNK4);
+
+   /* so->scissor overrides the scissor, defaulting to the whole framebuffer,
+    * with the scissor state */
+   cs->scissor = so->scissor;
+
+   /* point size per vertex adds a vertex shader output */
+   cs->point_size_per_vertex = so->point_size_per_vertex;
+
+   assert(!so->clip_halfz); /* could be supported with shader magic, actually
+                               D3D z is default on older gc */
+
+   return cs;
+}