i965: Start adding support for the Sandybridge CC unit.

1 files changed, 296 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/gen6_cc.c b/src/mesa/drivers/dri/i965/gen6_cc.c
new file mode 100644
index 0000000000..b1b6dc7db3
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/gen6_cc.c
@@ -0,0 +1,296 @@
+/*
+ * Copyright © 2009 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.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#include "brw_context.h"
+#include "brw_state.h"
+#include "brw_defines.h"
+#include "brw_util.h"
+#include "intel_batchbuffer.h"
+#include "main/macros.h"
+#include "main/enums.h"
+
+struct brw_blend_state_key {
+   GLboolean color_blend, alpha_enabled;
+
+   GLenum logic_op;
+
+   GLenum blend_eq_rgb, blend_eq_a;
+   GLenum blend_src_rgb, blend_src_a;
+   GLenum blend_dst_rgb, blend_dst_a;
+
+   GLenum alpha_func;
+
+   GLboolean dither;
+};
+
+static void
+blend_state_populate_key(struct brw_context *brw,
+			 struct brw_blend_state_key *key)
+{
+   GLcontext *ctx = &brw->intel.ctx;
+
+   memset(key, 0, sizeof(*key));
+
+   /* _NEW_COLOR */
+   if (ctx->Color._LogicOpEnabled)
+      key->logic_op = ctx->Color.LogicOp;
+   else
+      key->logic_op = GL_COPY;
+
+   /* _NEW_COLOR */
+   key->color_blend = ctx->Color.BlendEnabled;
+   if (key->color_blend) {
+      key->blend_eq_rgb = ctx->Color.BlendEquationRGB;
+      key->blend_eq_a = ctx->Color.BlendEquationA;
+      key->blend_src_rgb = ctx->Color.BlendSrcRGB;
+      key->blend_dst_rgb = ctx->Color.BlendDstRGB;
+      key->blend_src_a = ctx->Color.BlendSrcA;
+      key->blend_dst_a = ctx->Color.BlendDstA;
+   }
+
+   /* _NEW_COLOR */
+   key->alpha_enabled = ctx->Color.AlphaEnabled;
+   if (key->alpha_enabled) {
+      key->alpha_func = ctx->Color.AlphaFunc;
+   }
+
+   /* _NEW_COLOR */
+   key->dither = ctx->Color.DitherFlag;
+}
+
+/**
+ * Creates the state cache entry for the given CC unit key.
+ */
+static drm_intel_bo *
+blend_state_create_from_key(struct brw_context *brw,
+			    struct brw_blend_state_key *key)
+{
+   struct gen6_blend_state blend;
+   drm_intel_bo *bo;
+
+   memset(&blend, 0, sizeof(blend));
+
+   if (key->logic_op != GL_COPY) {
+      blend.blend1.logic_op_enable = 1;
+      blend.blend1.logic_op_func = intel_translate_logic_op(key->logic_op);
+   } else if (key->color_blend) {
+      GLenum eqRGB = key->blend_eq_rgb;
+      GLenum eqA = key->blend_eq_a;
+      GLenum srcRGB = key->blend_src_rgb;
+      GLenum dstRGB = key->blend_dst_rgb;
+      GLenum srcA = key->blend_src_a;
+      GLenum dstA = key->blend_dst_a;
+
+      if (eqRGB == GL_MIN || eqRGB == GL_MAX) {
+	 srcRGB = dstRGB = GL_ONE;
+      }
+
+      if (eqA == GL_MIN || eqA == GL_MAX) {
+	 srcA = dstA = GL_ONE;
+      }
+
+      blend.blend0.dest_blend_factor = brw_translate_blend_factor(dstRGB);
+      blend.blend0.source_blend_factor = brw_translate_blend_factor(srcRGB);
+      blend.blend0.blend_func = brw_translate_blend_equation(eqRGB);
+
+      blend.blend0.ia_dest_blend_factor = brw_translate_blend_factor(dstA);
+      blend.blend0.ia_source_blend_factor = brw_translate_blend_factor(srcA);
+      blend.blend0.ia_blend_func = brw_translate_blend_equation(eqA);
+
+      blend.blend0.blend_enable = 1;
+      blend.blend0.ia_blend_enable = (srcA != srcRGB ||
+				      dstA != dstRGB ||
+				      eqA != eqRGB);
+   }
+
+   if (key->alpha_enabled) {
+      blend.blend1.alpha_test_enable = 1;
+      blend.blend1.alpha_test_func = intel_translate_compare_func(key->alpha_func);
+
+   }
+
+   if (key->dither) {
+      blend.blend1.dither_enable = 1;
+      blend.blend1.y_dither_offset = 0;
+      blend.blend1.x_dither_offset = 0;
+   }
+
+   bo = brw_upload_cache(&brw->cache, BRW_BLEND_STATE,
+			 key, sizeof(*key),
+			 NULL, 0,
+			 &blend, sizeof(blend));
+
+   return bo;
+}
+
+static void
+prepare_blend_state(struct brw_context *brw)
+{
+   struct brw_blend_state_key key;
+
+   blend_state_populate_key(brw, &key);
+
+   drm_intel_bo_unreference(brw->cc.blend_state_bo);
+   brw->cc.blend_state_bo = brw_search_cache(&brw->cache, BRW_BLEND_STATE,
+					     &key, sizeof(key),
+					     NULL, 0,
+					     NULL);
+
+   if (brw->cc.blend_state_bo == NULL)
+      brw->cc.blend_state_bo = blend_state_create_from_key(brw, &key);
+}
+
+const struct brw_tracked_state gen6_blend_state = {
+   .dirty = {
+      .mesa = _NEW_COLOR,
+      .brw = 0,
+      .cache = 0,
+   },
+   .prepare = prepare_blend_state,
+};
+
+struct brw_color_calc_state_key {
+   GLubyte blend_constant_color[4];
+   GLclampf alpha_ref;
+   GLubyte stencil_ref[2];
+};
+
+static void
+color_calc_state_populate_key(struct brw_context *brw,
+			      struct brw_color_calc_state_key *key)
+{
+   GLcontext *ctx = &brw->intel.ctx;
+
+   memset(key, 0, sizeof(*key));
+
+   /* _NEW_STENCIL */
+   if (ctx->Stencil._Enabled) {
+      const unsigned back = ctx->Stencil._BackFace;
+
+      key->stencil_ref[0] = ctx->Stencil.Ref[0];
+      if (ctx->Stencil._TestTwoSide)
+	 key->stencil_ref[1] = ctx->Stencil.Ref[back];
+   }
+
+   /* _NEW_COLOR */
+   if (ctx->Color.AlphaEnabled)
+      key->alpha_ref = ctx->Color.AlphaRef;
+
+   key->blend_constant_color[0] = ctx->Color.BlendColor[0];
+   key->blend_constant_color[1] = ctx->Color.BlendColor[1];
+   key->blend_constant_color[2] = ctx->Color.BlendColor[2];
+   key->blend_constant_color[3] = ctx->Color.BlendColor[3];
+}
+
+/**
+ * Creates the state cache entry for the given CC state key.
+ */
+static drm_intel_bo *
+color_calc_state_create_from_key(struct brw_context *brw,
+				 struct brw_color_calc_state_key *key)
+{
+   struct gen6_color_calc_state cc;
+   drm_intel_bo *bo;
+
+   memset(&cc, 0, sizeof(cc));
+
+   cc.cc0.alpha_test_format = BRW_ALPHATEST_FORMAT_UNORM8;
+   UNCLAMPED_FLOAT_TO_UBYTE(cc.cc1.alpha_ref_fi.ui, key->alpha_ref);
+
+   cc.cc0.stencil_ref = key->stencil_ref[0];
+   cc.cc0.bf_stencil_ref = key->stencil_ref[1];
+
+   cc.constant_r = key->blend_constant_color[0];
+   cc.constant_g = key->blend_constant_color[1];
+   cc.constant_b = key->blend_constant_color[2];
+   cc.constant_a = key->blend_constant_color[3];
+
+   bo = brw_upload_cache(&brw->cache, BRW_COLOR_CALC_STATE,
+			 key, sizeof(*key),
+			 NULL, 0,
+			 &cc, sizeof(cc));
+
+   return bo;
+}
+
+static void
+prepare_color_calc_state(struct brw_context *brw)
+{
+   struct brw_color_calc_state_key key;
+
+   color_calc_state_populate_key(brw, &key);
+
+   drm_intel_bo_unreference(brw->cc.state_bo);
+   brw->cc.state_bo = brw_search_cache(&brw->cache, BRW_COLOR_CALC_STATE,
+				       &key, sizeof(key),
+				       NULL, 0,
+				       NULL);
+
+   if (brw->cc.state_bo == NULL)
+      brw->cc.state_bo = color_calc_state_create_from_key(brw, &key);
+}
+
+const struct brw_tracked_state gen6_color_calc_state = {
+   .dirty = {
+      .mesa = _NEW_COLOR,
+      .brw = 0,
+      .cache = 0,
+   },
+   .prepare = prepare_color_calc_state,
+};
+
+static void upload_cc_state_pointers(struct brw_context *brw)
+{
+   struct intel_context *intel = &brw->intel;
+
+   BEGIN_BATCH(4);
+   OUT_BATCH(CMD_3D_CC_STATE_POINTERS << 16 | (4 - 2));
+   OUT_RELOC(brw->cc.state_bo, I915_GEM_DOMAIN_INSTRUCTION, 0, 1);
+   OUT_RELOC(brw->cc.blend_state_bo, I915_GEM_DOMAIN_INSTRUCTION, 0, 1);
+   OUT_RELOC(brw->cc.depth_stencil_state_bo, I915_GEM_DOMAIN_INSTRUCTION, 0, 1);
+   ADVANCE_BATCH();
+}
+
+
+static void prepare_cc_state_pointers(struct brw_context *brw)
+{
+   brw_add_validated_bo(brw, brw->cc.state_bo);
+   brw_add_validated_bo(brw, brw->cc.blend_state_bo);
+   brw_add_validated_bo(brw, brw->cc.depth_stencil_state_bo);
+}
+
+const struct brw_tracked_state gen6_cc_state_pointers = {
+   .dirty = {
+      .mesa = 0,
+      .brw = BRW_NEW_BATCH,
+      .cache = (CACHE_NEW_BLEND_STATE |
+		CACHE_NEW_COLOR_CALC_STATE |
+		CACHE_NEW_DEPTH_STENCIL_STATE)
+   },
+   .prepare = prepare_cc_state_pointers,
+   .emit = upload_cc_state_pointers,
+};