--- /dev/null
+/*
+ * Copyright (c) 2014 Intel Corporation
+ *
+ * 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 "main/context.h"
+#include "main/blend.h"
+#include "main/mtypes.h"
+#include "main/samplerobj.h"
+#include "program/prog_parameter.h"
+
+#include "intel_mipmap_tree.h"
+#include "intel_batchbuffer.h"
+#include "intel_tex.h"
+#include "intel_fbo.h"
+#include "intel_buffer_objects.h"
+
+#include "brw_context.h"
+#include "brw_state.h"
+#include "brw_defines.h"
+#include "brw_wm.h"
+
+/**
+ * Sets up a surface state structure to point at the given region.
+ * While it is only used for the front/back buffer currently, it should be
+ * usable for further buffers when doing ARB_draw_buffer support.
+ */
+static void
+gen6_update_renderbuffer_surface(struct brw_context *brw,
+ struct gl_renderbuffer *rb,
+ bool layered,
+ unsigned int unit)
+{
+ struct gl_context *ctx = &brw->ctx;
+ struct intel_renderbuffer *irb = intel_renderbuffer(rb);
+ struct intel_mipmap_tree *mt = irb->mt;
+ uint32_t *surf;
+ uint32_t tile_x, tile_y;
+ uint32_t format = 0;
+ /* _NEW_BUFFERS */
+ mesa_format rb_format = _mesa_get_render_format(ctx, intel_rb_format(irb));
+ uint32_t surf_index =
+ brw->wm.prog_data->binding_table.render_target_start + unit;
+
+ assert(!layered);
+
+ if (rb->TexImage && !brw->has_surface_tile_offset) {
+ intel_renderbuffer_get_tile_offsets(irb, &tile_x, &tile_y);
+
+ if (tile_x != 0 || tile_y != 0) {
+ /* Original gen4 hardware couldn't draw to a non-tile-aligned
+ * destination in a miptree unless you actually setup your renderbuffer
+ * as a miptree and used the fragile lod/array_index/etc. controls to
+ * select the image. So, instead, we just make a new single-level
+ * miptree and render into that.
+ */
+ intel_renderbuffer_move_to_temp(brw, irb, false);
+ mt = irb->mt;
+ }
+ }
+
+ intel_miptree_used_for_rendering(irb->mt);
+
+ surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 6 * 4, 32,
+ &brw->wm.base.surf_offset[surf_index]);
+
+ format = brw->render_target_format[rb_format];
+ if (unlikely(!brw->format_supported_as_render_target[rb_format])) {
+ _mesa_problem(ctx, "%s: renderbuffer format %s unsupported\n",
+ __FUNCTION__, _mesa_get_format_name(rb_format));
+ }
+
+ surf[0] = (BRW_SURFACE_2D << BRW_SURFACE_TYPE_SHIFT |
+ format << BRW_SURFACE_FORMAT_SHIFT);
+
+ /* reloc */
+ surf[1] = (intel_renderbuffer_get_tile_offsets(irb, &tile_x, &tile_y) +
+ mt->bo->offset64);
+
+ surf[2] = ((rb->Width - 1) << BRW_SURFACE_WIDTH_SHIFT |
+ (rb->Height - 1) << BRW_SURFACE_HEIGHT_SHIFT);
+
+ surf[3] = (brw_get_surface_tiling_bits(mt->tiling) |
+ (mt->pitch - 1) << BRW_SURFACE_PITCH_SHIFT);
+
+ surf[4] = brw_get_surface_num_multisamples(mt->num_samples);
+
+ assert(brw->has_surface_tile_offset || (tile_x == 0 && tile_y == 0));
+ /* Note that the low bits of these fields are missing, so
+ * there's the possibility of getting in trouble.
+ */
+ assert(tile_x % 4 == 0);
+ assert(tile_y % 2 == 0);
+ surf[5] = ((tile_x / 4) << BRW_SURFACE_X_OFFSET_SHIFT |
+ (tile_y / 2) << BRW_SURFACE_Y_OFFSET_SHIFT |
+ (mt->align_h == 4 ? BRW_SURFACE_VERTICAL_ALIGN_ENABLE : 0));
+
+ if (brw->gen < 6) {
+ /* _NEW_COLOR */
+ if (!ctx->Color.ColorLogicOpEnabled &&
+ (ctx->Color.BlendEnabled & (1 << unit)))
+ surf[0] |= BRW_SURFACE_BLEND_ENABLED;
+
+ if (!ctx->Color.ColorMask[unit][0])
+ surf[0] |= 1 << BRW_SURFACE_WRITEDISABLE_R_SHIFT;
+ if (!ctx->Color.ColorMask[unit][1])
+ surf[0] |= 1 << BRW_SURFACE_WRITEDISABLE_G_SHIFT;
+ if (!ctx->Color.ColorMask[unit][2])
+ surf[0] |= 1 << BRW_SURFACE_WRITEDISABLE_B_SHIFT;
+
+ /* As mentioned above, disable writes to the alpha component when the
+ * renderbuffer is XRGB.
+ */
+ if (ctx->DrawBuffer->Visual.alphaBits == 0 ||
+ !ctx->Color.ColorMask[unit][3]) {
+ surf[0] |= 1 << BRW_SURFACE_WRITEDISABLE_A_SHIFT;
+ }
+ }
+
+ drm_intel_bo_emit_reloc(brw->batch.bo,
+ brw->wm.base.surf_offset[surf_index] + 4,
+ mt->bo,
+ surf[1] - mt->bo->offset64,
+ I915_GEM_DOMAIN_RENDER,
+ I915_GEM_DOMAIN_RENDER);
+}
+
+void
+gen6_init_vtable_surface_functions(struct brw_context *brw)
+{
+ gen4_init_vtable_surface_functions(brw);
+ brw->vtbl.update_renderbuffer_surface = gen6_update_renderbuffer_surface;
+}
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