Merge remote-tracking branch 'origin/released'

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diff --git a/mesalib/src/gallium/include/pipe/p_state.h b/mesalib/src/gallium/include/pipe/p_state.h
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+++ b/mesalib/src/gallium/include/pipe/p_state.h
@@ -0,0 +1,644 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 VMware, Inc.
+ * All Rights Reserved.
+ * 
+ * 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ * 
+ **************************************************************************/
+
+
+/**
+ * @file
+ * 
+ * Abstract graphics pipe state objects.
+ *
+ * Basic notes:
+ *   1. Want compact representations, so we use bitfields.
+ *   2. Put bitfields before other (GLfloat) fields.
+ */
+
+
+#ifndef PIPE_STATE_H
+#define PIPE_STATE_H
+
+#include "p_compiler.h"
+#include "p_defines.h"
+#include "p_format.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * Implementation limits
+ */
+#define PIPE_MAX_ATTRIBS          32
+#define PIPE_MAX_CLIP_PLANES       8
+#define PIPE_MAX_COLOR_BUFS        8
+#define PIPE_MAX_CONSTANT_BUFFERS 32
+#define PIPE_MAX_SAMPLERS         18 /* 16 public + 2 driver internal */
+#define PIPE_MAX_SHADER_INPUTS    32
+#define PIPE_MAX_SHADER_OUTPUTS   48 /* 32 GENERICs + POS, PSIZE, FOG, etc. */
+#define PIPE_MAX_SHADER_SAMPLER_VIEWS 32
+#define PIPE_MAX_SHADER_RESOURCES 32
+#define PIPE_MAX_TEXTURE_LEVELS   16
+#define PIPE_MAX_SO_BUFFERS        4
+#define PIPE_MAX_SO_OUTPUTS       64
+#define PIPE_MAX_VIEWPORTS        16
+#define PIPE_MAX_CLIP_OR_CULL_DISTANCE_COUNT 8
+#define PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT 2
+
+
+struct pipe_reference
+{
+   int32_t count; /* atomic */
+};
+
+
+
+/**
+ * Primitive (point/line/tri) rasterization info
+ */
+struct pipe_rasterizer_state
+{
+   unsigned flatshade:1;
+   unsigned light_twoside:1;
+   unsigned clamp_vertex_color:1;
+   unsigned clamp_fragment_color:1;
+   unsigned front_ccw:1;
+   unsigned cull_face:2;      /**< PIPE_FACE_x */
+   unsigned fill_front:2;     /**< PIPE_POLYGON_MODE_x */
+   unsigned fill_back:2;      /**< PIPE_POLYGON_MODE_x */
+   unsigned offset_point:1;
+   unsigned offset_line:1;
+   unsigned offset_tri:1;
+   unsigned scissor:1;
+   unsigned poly_smooth:1;
+   unsigned poly_stipple_enable:1;
+   unsigned point_smooth:1;
+   unsigned sprite_coord_mode:1;     /**< PIPE_SPRITE_COORD_ */
+   unsigned point_quad_rasterization:1; /** points rasterized as quads or points */
+   unsigned point_tri_clip:1; /** large points clipped as tris or points */
+   unsigned point_size_per_vertex:1; /**< size computed in vertex shader */
+   unsigned multisample:1;         /* XXX maybe more ms state in future */
+   unsigned line_smooth:1;
+   unsigned line_stipple_enable:1;
+   unsigned line_last_pixel:1;
+
+   /**
+    * Use the first vertex of a primitive as the provoking vertex for
+    * flat shading.
+    */
+   unsigned flatshade_first:1;
+
+   unsigned half_pixel_center:1;
+   unsigned bottom_edge_rule:1;
+
+   /**
+    * When true, rasterization is disabled and no pixels are written.
+    * This only makes sense with the Stream Out functionality.
+    */
+   unsigned rasterizer_discard:1;
+
+   /**
+    * When false, depth clipping is disabled and the depth value will be
+    * clamped later at the per-pixel level before depth testing.
+    * This depends on PIPE_CAP_DEPTH_CLIP_DISABLE.
+    */
+   unsigned depth_clip:1;
+
+   /**
+    * When true clip space in the z axis goes from [0..1] (D3D).  When false
+    * [-1, 1] (GL).
+    *
+    * NOTE: D3D will always use depth clamping.
+    */
+   unsigned clip_halfz:1;
+
+   /**
+    * Enable bits for clipping half-spaces.
+    * This applies to both user clip planes and shader clip distances.
+    * Note that if the bound shader exports any clip distances, these
+    * replace all user clip planes, and clip half-spaces enabled here
+    * but not written by the shader count as disabled.
+    */
+   unsigned clip_plane_enable:PIPE_MAX_CLIP_PLANES;
+
+   unsigned line_stipple_factor:8;  /**< [1..256] actually */
+   unsigned line_stipple_pattern:16;
+
+   uint32_t sprite_coord_enable; /* referring to 32 TEXCOORD/GENERIC inputs */
+
+   float line_width;
+   float point_size;           /**< used when no per-vertex size */
+   float offset_units;
+   float offset_scale;
+   float offset_clamp;
+};
+
+
+struct pipe_poly_stipple
+{
+   unsigned stipple[32];
+};
+
+
+struct pipe_viewport_state
+{
+   float scale[3];
+   float translate[3];
+};
+
+
+struct pipe_scissor_state
+{
+   unsigned minx:16;
+   unsigned miny:16;
+   unsigned maxx:16;
+   unsigned maxy:16;
+};
+
+
+struct pipe_clip_state
+{
+   float ucp[PIPE_MAX_CLIP_PLANES][4];
+};
+
+
+/**
+ * Stream output for vertex transform feedback.
+ */
+struct pipe_stream_output_info
+{
+   unsigned num_outputs;
+   /** stride for an entire vertex for each buffer in dwords */
+   unsigned stride[PIPE_MAX_SO_BUFFERS];
+
+   /**
+    * Array of stream outputs, in the order they are to be written in.
+    * Selected components are tightly packed into the output buffer.
+    */
+   struct {
+      unsigned register_index:8;  /**< 0 to PIPE_MAX_SHADER_OUTPUTS */
+      unsigned start_component:2; /** 0 to 3 */
+      unsigned num_components:3;  /** 1 to 4 */
+      unsigned output_buffer:3;   /**< 0 to PIPE_MAX_SO_BUFFERS */
+      unsigned dst_offset:16;     /**< offset into the buffer in dwords */
+      unsigned stream:2;          /**< 0 to 3 */
+   } output[PIPE_MAX_SO_OUTPUTS];
+};
+
+
+struct pipe_shader_state
+{
+   const struct tgsi_token *tokens;
+   struct pipe_stream_output_info stream_output;
+};
+
+
+struct pipe_depth_state 
+{
+   unsigned enabled:1;         /**< depth test enabled? */
+   unsigned writemask:1;       /**< allow depth buffer writes? */
+   unsigned func:3;            /**< depth test func (PIPE_FUNC_x) */
+};
+
+
+struct pipe_stencil_state
+{
+   unsigned enabled:1;  /**< stencil[0]: stencil enabled, stencil[1]: two-side enabled */
+   unsigned func:3;     /**< PIPE_FUNC_x */
+   unsigned fail_op:3;  /**< PIPE_STENCIL_OP_x */
+   unsigned zpass_op:3; /**< PIPE_STENCIL_OP_x */
+   unsigned zfail_op:3; /**< PIPE_STENCIL_OP_x */
+   unsigned valuemask:8;
+   unsigned writemask:8;
+};
+
+
+struct pipe_alpha_state
+{
+   unsigned enabled:1;
+   unsigned func:3;     /**< PIPE_FUNC_x */
+   float ref_value;     /**< reference value */
+};
+
+
+struct pipe_depth_stencil_alpha_state
+{
+   struct pipe_depth_state depth;
+   struct pipe_stencil_state stencil[2]; /**< [0] = front, [1] = back */
+   struct pipe_alpha_state alpha;
+};
+
+
+struct pipe_rt_blend_state
+{
+   unsigned blend_enable:1;
+
+   unsigned rgb_func:3;          /**< PIPE_BLEND_x */
+   unsigned rgb_src_factor:5;    /**< PIPE_BLENDFACTOR_x */
+   unsigned rgb_dst_factor:5;    /**< PIPE_BLENDFACTOR_x */
+
+   unsigned alpha_func:3;        /**< PIPE_BLEND_x */
+   unsigned alpha_src_factor:5;  /**< PIPE_BLENDFACTOR_x */
+   unsigned alpha_dst_factor:5;  /**< PIPE_BLENDFACTOR_x */
+
+   unsigned colormask:4;         /**< bitmask of PIPE_MASK_R/G/B/A */
+};
+
+struct pipe_blend_state
+{
+   unsigned independent_blend_enable:1;
+   unsigned logicop_enable:1;
+   unsigned logicop_func:4;      /**< PIPE_LOGICOP_x */
+   unsigned dither:1;
+   unsigned alpha_to_coverage:1;
+   unsigned alpha_to_one:1;
+   struct pipe_rt_blend_state rt[PIPE_MAX_COLOR_BUFS];
+};
+
+
+struct pipe_blend_color
+{
+   float color[4];
+};
+
+struct pipe_stencil_ref
+{
+   ubyte ref_value[2];
+};
+
+struct pipe_framebuffer_state
+{
+   unsigned width, height;
+
+   /** multiple color buffers for multiple render targets */
+   unsigned nr_cbufs;
+   struct pipe_surface *cbufs[PIPE_MAX_COLOR_BUFS];
+
+   struct pipe_surface *zsbuf;      /**< Z/stencil buffer */
+};
+
+
+/**
+ * Texture sampler state.
+ */
+struct pipe_sampler_state
+{
+   unsigned wrap_s:3;            /**< PIPE_TEX_WRAP_x */
+   unsigned wrap_t:3;            /**< PIPE_TEX_WRAP_x */
+   unsigned wrap_r:3;            /**< PIPE_TEX_WRAP_x */
+   unsigned min_img_filter:2;    /**< PIPE_TEX_FILTER_x */
+   unsigned min_mip_filter:2;    /**< PIPE_TEX_MIPFILTER_x */
+   unsigned mag_img_filter:2;    /**< PIPE_TEX_FILTER_x */
+   unsigned compare_mode:1;      /**< PIPE_TEX_COMPARE_x */
+   unsigned compare_func:3;      /**< PIPE_FUNC_x */
+   unsigned normalized_coords:1; /**< Are coords normalized to [0,1]? */
+   unsigned max_anisotropy:6;
+   unsigned seamless_cube_map:1;
+   float lod_bias;               /**< LOD/lambda bias */
+   float min_lod, max_lod;       /**< LOD clamp range, after bias */
+   union pipe_color_union border_color;
+};
+
+
+/**
+ * A view into a texture that can be bound to a color render target /
+ * depth stencil attachment point.
+ */
+struct pipe_surface
+{
+   struct pipe_reference reference;
+   struct pipe_resource *texture; /**< resource into which this is a view  */
+   struct pipe_context *context; /**< context this surface belongs to */
+   enum pipe_format format;
+
+   /* XXX width/height should be removed */
+   unsigned width;               /**< logical width in pixels */
+   unsigned height;              /**< logical height in pixels */
+
+   unsigned writable:1;          /**< writable shader resource */
+
+   union {
+      struct {
+         unsigned level;
+         unsigned first_layer:16;
+         unsigned last_layer:16;
+      } tex;
+      struct {
+         unsigned first_element;
+         unsigned last_element;
+      } buf;
+   } u;
+};
+
+
+/**
+ * A view into a texture that can be bound to a shader stage.
+ */
+struct pipe_sampler_view
+{
+   struct pipe_reference reference;
+   enum pipe_texture_target target; /**< PIPE_TEXTURE_x */
+   enum pipe_format format;      /**< typed PIPE_FORMAT_x */
+   struct pipe_resource *texture; /**< texture into which this is a view  */
+   struct pipe_context *context; /**< context this view belongs to */
+   union {
+      struct {
+         unsigned first_layer:16;     /**< first layer to use for array textures */
+         unsigned last_layer:16;      /**< last layer to use for array textures */
+         unsigned first_level:8;      /**< first mipmap level to use */
+         unsigned last_level:8;       /**< last mipmap level to use */
+      } tex;
+      struct {
+         unsigned first_element;
+         unsigned last_element;
+      } buf;
+   } u;
+   unsigned swizzle_r:3;         /**< PIPE_SWIZZLE_x for red component */
+   unsigned swizzle_g:3;         /**< PIPE_SWIZZLE_x for green component */
+   unsigned swizzle_b:3;         /**< PIPE_SWIZZLE_x for blue component */
+   unsigned swizzle_a:3;         /**< PIPE_SWIZZLE_x for alpha component */
+};
+
+
+/**
+ * Subregion of 1D/2D/3D image resource.
+ */
+struct pipe_box
+{
+   int x;
+   int y;
+   int z;
+   int width;
+   int height;
+   int depth;
+};
+
+
+/**
+ * A memory object/resource such as a vertex buffer or texture.
+ */
+struct pipe_resource
+{
+   struct pipe_reference reference;
+   struct pipe_screen *screen; /**< screen that this texture belongs to */
+   enum pipe_texture_target target; /**< PIPE_TEXTURE_x */
+   enum pipe_format format;         /**< PIPE_FORMAT_x */
+
+   unsigned width0;
+   unsigned height0;
+   unsigned depth0;
+   unsigned array_size;
+
+   unsigned last_level:8;    /**< Index of last mipmap level present/defined */
+   unsigned nr_samples:8;    /**< for multisampled surfaces, nr of samples */
+   unsigned usage:8;         /**< PIPE_USAGE_x (not a bitmask) */
+
+   unsigned bind;            /**< bitmask of PIPE_BIND_x */
+   unsigned flags;           /**< bitmask of PIPE_RESOURCE_FLAG_x */
+};
+
+
+/**
+ * Transfer object.  For data transfer to/from a resource.
+ */
+struct pipe_transfer
+{
+   struct pipe_resource *resource; /**< resource to transfer to/from  */
+   unsigned level;                 /**< texture mipmap level */
+   enum pipe_transfer_usage usage;
+   struct pipe_box box;            /**< region of the resource to access */
+   unsigned stride;                /**< row stride in bytes */
+   unsigned layer_stride;          /**< image/layer stride in bytes */
+};
+
+
+
+/**
+ * A vertex buffer.  Typically, all the vertex data/attributes for
+ * drawing something will be in one buffer.  But it's also possible, for
+ * example, to put colors in one buffer and texcoords in another.
+ */
+struct pipe_vertex_buffer
+{
+   unsigned stride;    /**< stride to same attrib in next vertex, in bytes */
+   unsigned buffer_offset;  /**< offset to start of data in buffer, in bytes */
+   struct pipe_resource *buffer;  /**< the actual buffer */
+   const void *user_buffer;  /**< pointer to a user buffer if buffer == NULL */
+};
+
+
+/**
+ * A constant buffer.  A subrange of an existing buffer can be set
+ * as a constant buffer.
+ */
+struct pipe_constant_buffer {
+   struct pipe_resource *buffer; /**< the actual buffer */
+   unsigned buffer_offset; /**< offset to start of data in buffer, in bytes */
+   unsigned buffer_size;   /**< how much data can be read in shader */
+   const void *user_buffer;  /**< pointer to a user buffer if buffer == NULL */
+};
+
+
+/**
+ * A stream output target. The structure specifies the range vertices can
+ * be written to.
+ *
+ * In addition to that, the structure should internally maintain the offset
+ * into the buffer, which should be incremented everytime something is written
+ * (appended) to it. The internal offset is buffer_offset + how many bytes
+ * have been written. The internal offset can be stored on the device
+ * and the CPU actually doesn't have to query it.
+ *
+ * Note that the buffer_size variable is actually specifying the available
+ * space in the buffer, not the size of the attached buffer. 
+ * In other words in majority of cases buffer_size would simply be 
+ * 'buffer->width0 - buffer_offset', so buffer_size refers to the size
+ * of the buffer left, after accounting for buffer offset, for stream output
+ * to write to.
+ *
+ * Use PIPE_QUERY_SO_STATISTICS to know how many primitives have
+ * actually been written.
+ */
+struct pipe_stream_output_target
+{
+   struct pipe_reference reference;
+   struct pipe_resource *buffer; /**< the output buffer */
+   struct pipe_context *context; /**< context this SO target belongs to */
+
+   unsigned buffer_offset;  /**< offset where data should be written, in bytes */
+   unsigned buffer_size;    /**< how much data is allowed to be written */
+};
+
+
+/**
+ * Information to describe a vertex attribute (position, color, etc)
+ */
+struct pipe_vertex_element
+{
+   /** Offset of this attribute, in bytes, from the start of the vertex */
+   unsigned src_offset;
+
+   /** Instance data rate divisor. 0 means this is per-vertex data,
+    *  n means per-instance data used for n consecutive instances (n > 0).
+    */
+   unsigned instance_divisor;
+
+   /** Which vertex_buffer (as given to pipe->set_vertex_buffer()) does
+    * this attribute live in?
+    */
+   unsigned vertex_buffer_index;
+ 
+   enum pipe_format src_format;
+};
+
+
+/**
+ * An index buffer.  When an index buffer is bound, all indices to vertices
+ * will be looked up in the buffer.
+ */
+struct pipe_index_buffer
+{
+   unsigned index_size;  /**< size of an index, in bytes */
+   unsigned offset;  /**< offset to start of data in buffer, in bytes */
+   struct pipe_resource *buffer; /**< the actual buffer */
+   const void *user_buffer;  /**< pointer to a user buffer if buffer == NULL */
+};
+
+
+/**
+ * Information to describe a draw_vbo call.
+ */
+struct pipe_draw_info
+{
+   boolean indexed;  /**< use index buffer */
+
+   unsigned mode;  /**< the mode of the primitive */
+   unsigned start;  /**< the index of the first vertex */
+   unsigned count;  /**< number of vertices */
+
+   unsigned start_instance; /**< first instance id */
+   unsigned instance_count; /**< number of instances */
+
+   /**
+    * For indexed drawing, these fields apply after index lookup.
+    */
+   int index_bias; /**< a bias to be added to each index */
+   unsigned min_index; /**< the min index */
+   unsigned max_index; /**< the max index */
+
+   /**
+    * Primitive restart enable/index (only applies to indexed drawing)
+    */
+   boolean primitive_restart;
+   unsigned restart_index;
+
+   /**
+    * Stream output target. If not NULL, it's used to provide the 'count'
+    * parameter based on the number vertices captured by the stream output
+    * stage. (or generally, based on the number of bytes captured)
+    *
+    * Only 'mode', 'start_instance', and 'instance_count' are taken into
+    * account, all the other variables from pipe_draw_info are ignored.
+    *
+    * 'start' is implicitly 0 and 'count' is set as discussed above.
+    * The draw command is non-indexed.
+    *
+    * Note that this only provides the count. The vertex buffers must
+    * be set via set_vertex_buffers manually.
+    */
+   struct pipe_stream_output_target *count_from_stream_output;
+
+   /* Indirect parameters resource: If not NULL, most values are taken
+    * from this buffer instead, which is laid out as follows:
+    *
+    * if indexed is TRUE:
+    *  struct {
+    *     uint32_t count;
+    *     uint32_t instance_count;
+    *     uint32_t start;
+    *     int32_t index_bias;
+    *     uint32_t start_instance;
+    *  };
+    * otherwise:
+    *  struct {
+    *     uint32_t count;
+    *     uint32_t instance_count;
+    *     uint32_t start;
+    *     uint32_t start_instance;
+    *  };
+    */
+   struct pipe_resource *indirect;
+   unsigned indirect_offset; /**< must be 4 byte aligned */
+};
+
+
+/**
+ * Information to describe a blit call.
+ */
+struct pipe_blit_info
+{
+   struct {
+      struct pipe_resource *resource;
+      unsigned level;
+      struct pipe_box box; /**< negative width, height only legal for src */
+      /* For pipe_surface-like format casting: */
+      enum pipe_format format; /**< must be supported for sampling (src)
+                               or rendering (dst), ZS is always supported */
+   } dst, src;
+
+   unsigned mask; /**< bitmask of PIPE_MASK_R/G/B/A/Z/S */
+   unsigned filter; /**< PIPE_TEX_FILTER_* */
+
+   boolean scissor_enable;
+   struct pipe_scissor_state scissor;
+
+   boolean render_condition_enable; /**< whether the blit should honor the
+                                    current render condition */
+};
+
+
+/**
+ * Structure used as a header for serialized LLVM programs.
+ */
+struct pipe_llvm_program_header
+{
+   uint32_t num_bytes; /**< Number of bytes in the LLVM bytecode program. */
+};
+
+struct pipe_compute_state
+{
+   const void *prog; /**< Compute program to be executed. */
+   unsigned req_local_mem; /**< Required size of the LOCAL resource. */
+   unsigned req_private_mem; /**< Required size of the PRIVATE resource. */
+   unsigned req_input_mem; /**< Required size of the INPUT resource. */
+};
+
+#ifdef __cplusplus
+}
+#endif
+   
+#endif