ilo: add functions to manage shaders

This commits add shader cache, shader state, shader variant, and etc.  It does
not add the shader compiler though.

1 files changed, 249 insertions, 0 deletions

diff --git a/src/gallium/drivers/ilo/ilo_shader.h b/src/gallium/drivers/ilo/ilo_shader.h
new file mode 100644
index 00000000000..ffe5611131c
--- /dev/null
+++ b/src/gallium/drivers/ilo/ilo_shader.h
@@ -0,0 +1,249 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2012-2013 LunarG, Inc.
+ *
+ * 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 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:
+ *    Chia-I Wu <olv@lunarg.com>
+ */
+
+#ifndef ILO_SHADER_H
+#define ILO_SHADER_H
+
+#include "ilo_common.h"
+#include "ilo_context.h"
+
+/* XXX The interface needs to be reworked */
+
+/**
+ * A shader variant.  It consists of non-orthogonal states of the pipe context
+ * affecting the compilation of a shader.
+ */
+struct ilo_shader_variant {
+   union {
+      struct {
+         bool rasterizer_discard;
+         int num_ucps;
+      } vs;
+
+      struct {
+         bool rasterizer_discard;
+         int num_inputs;
+         int semantic_names[PIPE_MAX_SHADER_INPUTS];
+         int semantic_indices[PIPE_MAX_SHADER_INPUTS];
+      } gs;
+
+      struct {
+         bool flatshade;
+         int fb_height;
+         int num_cbufs;
+      } fs;
+   } u;
+
+   int num_sampler_views;
+   struct {
+      unsigned r:3;
+      unsigned g:3;
+      unsigned b:3;
+      unsigned a:3;
+   } sampler_view_swizzles[ILO_MAX_SAMPLER_VIEWS];
+
+   uint32_t saturate_tex_coords[3];
+};
+
+/**
+ * A compiled shader.
+ */
+struct ilo_shader {
+   struct ilo_shader_variant variant;
+   /* hash of the shader variant for quicker lookup */
+   unsigned hash;
+
+   struct {
+      int semantic_names[PIPE_MAX_SHADER_INPUTS];
+      int semantic_indices[PIPE_MAX_SHADER_INPUTS];
+      int interp[PIPE_MAX_SHADER_INPUTS];
+      bool centroid[PIPE_MAX_SHADER_INPUTS];
+      int count;
+
+      int start_grf;
+      bool has_pos;
+      bool has_linear_interp;
+      int barycentric_interpolation_mode;
+      bool discard_adj;
+   } in;
+
+   struct {
+      int semantic_names[PIPE_MAX_SHADER_OUTPUTS];
+      int semantic_indices[PIPE_MAX_SHADER_OUTPUTS];
+      int count;
+
+      bool has_pos;
+   } out;
+
+   bool has_kill;
+   bool dispatch_16;
+
+   bool stream_output;
+   int svbi_post_inc;
+   /* for VS stream output / rasterizer discard */
+   int gs_offsets[3];
+   int gs_start_grf;
+
+   void *kernel;
+   int kernel_size;
+
+   /* what does the push constant buffer consist of? */
+   struct {
+      int clip_state_size;
+   } pcb;
+
+   struct list_head list;
+
+   uint32_t cache_seqno;
+   uint32_t cache_offset;
+};
+
+/**
+ * Information about a shader state.
+ */
+struct ilo_shader_info {
+   int type;
+   int gen;
+
+   const struct tgsi_token *tokens;
+
+   struct pipe_stream_output_info stream_output;
+   struct {
+      unsigned req_local_mem;
+      unsigned req_private_mem;
+      unsigned req_input_mem;
+   } compute;
+
+   bool has_color_interp;
+   bool has_pos;
+   bool has_vertexid;
+   bool has_instanceid;
+   bool fs_color0_writes_all_cbufs;
+
+   int edgeflag_in;
+   int edgeflag_out;
+
+   uint32_t shadow_samplers;
+   int num_samplers;
+};
+
+/**
+ * A shader state.
+ */
+struct ilo_shader_state {
+   struct ilo_shader_info info;
+
+   struct list_head variants;
+   int num_variants, total_size;
+
+   struct ilo_shader *shader;
+};
+
+struct ilo_shader_cache {
+   struct intel_winsys *winsys;
+   struct intel_bo *bo;
+   int cur, size;
+   bool busy;
+
+   /* starting from 1, incremented whenever a new bo is allocated */
+   uint32_t seqno;
+};
+
+void
+ilo_shader_variant_init(struct ilo_shader_variant *variant,
+                        const struct ilo_shader_info *info,
+                        const struct ilo_context *ilo);
+
+struct ilo_shader_state *
+ilo_shader_state_create(const struct ilo_context *ilo,
+                        int type, const void *templ);
+
+void
+ilo_shader_state_destroy(struct ilo_shader_state *state);
+
+struct ilo_shader *
+ilo_shader_state_add_variant(struct ilo_shader_state *state,
+                             const struct ilo_shader_variant *variant);
+
+bool
+ilo_shader_state_use_variant(struct ilo_shader_state *state,
+                             const struct ilo_shader_variant *variant);
+
+struct ilo_shader_cache *
+ilo_shader_cache_create(struct intel_winsys *winsys);
+
+void
+ilo_shader_cache_destroy(struct ilo_shader_cache *shc);
+
+void
+ilo_shader_cache_set(struct ilo_shader_cache *shc,
+                     struct ilo_shader **shaders,
+                     int num_shaders);
+
+static inline void
+ilo_shader_cache_mark_busy(struct ilo_shader_cache *shc)
+{
+   if (shc->cur)
+      shc->busy = true;
+}
+
+static inline struct ilo_shader *
+ilo_shader_compile_vs(const struct ilo_shader_state *state,
+                      const struct ilo_shader_variant *variant)
+{
+   return NULL;
+}
+
+static inline struct ilo_shader *
+ilo_shader_compile_gs(const struct ilo_shader_state *state,
+                      const struct ilo_shader_variant *variant)
+{
+   return NULL;
+}
+
+static inline struct ilo_shader *
+ilo_shader_compile_fs(const struct ilo_shader_state *state,
+                      const struct ilo_shader_variant *variant)
+{
+   return NULL;
+}
+
+static inline struct ilo_shader *
+ilo_shader_compile_cs(const struct ilo_shader_state *state,
+                      const struct ilo_shader_variant *variant)
+{
+   return NULL;
+}
+
+static inline void
+ilo_shader_destroy(struct ilo_shader *sh)
+{
+   FREE(sh->kernel);
+   FREE(sh);
+}
+
+#endif /* ILO_SHADER_H */