| /************************************************************************** |
| * |
| * 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 32 |
| #define PIPE_MAX_SHADER_INPUTS 80 /* 32 GENERIC + 32 PATCH + 16 others */ |
| #define PIPE_MAX_SHADER_OUTPUTS 80 /* 32 GENERIC + 32 PATCH + 16 others */ |
| #define PIPE_MAX_SHADER_SAMPLER_VIEWS 32 |
| #define PIPE_MAX_SHADER_BUFFERS 32 |
| #define PIPE_MAX_SHADER_IMAGES 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 force_persample_interp:1; |
| 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]; |
| }; |
| |
| /** |
| * The 'type' parameter identifies whether the shader state contains TGSI |
| * tokens, etc. If the driver returns 'PIPE_SHADER_IR_TGSI' for the |
| * 'PIPE_SHADER_CAP_PREFERRED_IR' shader param, the ir will *always* be |
| * 'PIPE_SHADER_IR_TGSI' and the tokens ptr will be valid. If the driver |
| * requests a different 'pipe_shader_ir' type, then it must check the 'type' |
| * enum to see if it is getting TGSI tokens or its preferred IR. |
| * |
| * TODO pipe_compute_state should probably get similar treatment to handle |
| * multiple IR's in a cleaner way.. |
| */ |
| struct pipe_shader_state |
| { |
| enum pipe_shader_ir type; |
| /* TODO move tokens into union. */ |
| const struct tgsi_token *tokens; |
| union { |
| void *llvm; |
| void *native; |
| } ir; |
| struct pipe_stream_output_info stream_output; |
| }; |
| |
| static inline void |
| pipe_shader_state_from_tgsi(struct pipe_shader_state *state, |
| const struct tgsi_token *tokens) |
| { |
| state->type = PIPE_SHADER_IR_TGSI; |
| state->tokens = tokens; |
| memset(&state->stream_output, 0, sizeof(state->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) */ |
| unsigned bounds_test:1; /**< depth bounds test enabled? */ |
| float bounds_min; /**< minimum depth bound */ |
| float bounds_max; /**< maximum depth bound */ |
| }; |
| |
| |
| 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]; |
| }; |
| |
| |
| /** |
| * Note that pipe_surfaces are "texture views for rendering" |
| * and so in the case of ARB_framebuffer_no_attachment there |
| * is no pipe_surface state available such that we may |
| * extract the number of samples and layers. |
| */ |
| struct pipe_framebuffer_state |
| { |
| unsigned width, height; |
| unsigned samples; /**< Number of samples in a no-attachment framebuffer */ |
| unsigned layers; /**< Number of layers in a no-attachment framebuffer */ |
| |
| /** 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 */ |
| }; |
| |
| |
| /** |
| * A description of a buffer or texture image that can be bound to a shader |
| * stage. |
| */ |
| struct pipe_image_view |
| { |
| struct pipe_resource *resource; /**< resource into which this is a view */ |
| enum pipe_format format; /**< typed PIPE_FORMAT_x */ |
| unsigned access; /**< PIPE_IMAGE_ACCESS_x */ |
| |
| 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 level:8; /**< mipmap level to use */ |
| } tex; |
| struct { |
| unsigned first_element; |
| unsigned last_element; |
| } buf; |
| } u; |
| }; |
| |
| |
| /** |
| * 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 */ |
| }; |
| |
| |
| /** |
| * An untyped shader buffer supporting loads, stores, and atomics. |
| */ |
| struct pipe_shader_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 */ |
| }; |
| |
| |
| /** |
| * 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 */ |
| |
| unsigned drawid; /**< id of this draw in a multidraw */ |
| |
| unsigned vertices_per_patch; /**< the number of vertices per patch */ |
| |
| /** |
| * 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 draw 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 */ |
| unsigned indirect_stride; /**< must be 4 byte aligned */ |
| unsigned indirect_count; /**< number of indirect draws */ |
| |
| /* Indirect draw count resource: If not NULL, contains a 32-bit value which |
| * is to be used as the real indirect_count. In that case indirect_count |
| * becomes the maximum possible value. |
| */ |
| struct pipe_resource *indirect_params; |
| unsigned indirect_params_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 */ |
| boolean alpha_blend; /* dst.rgb = src.rgb * src.a + dst.rgb * (1 - src.a) */ |
| }; |
| |
| /** |
| * Information to describe a launch_grid call. |
| */ |
| struct pipe_grid_info |
| { |
| /** |
| * For drivers that use PIPE_SHADER_IR_LLVM as their prefered IR, this value |
| * will be the index of the kernel in the opencl.kernels metadata list. |
| */ |
| uint32_t pc; |
| |
| /** |
| * Will be used to initialize the INPUT resource, and it should point to a |
| * buffer of at least pipe_compute_state::req_input_mem bytes. |
| */ |
| void *input; |
| |
| /** |
| * Determine the layout of the working block (in thread units) to be used. |
| */ |
| uint block[3]; |
| |
| /** |
| * Determine the layout of the grid (in block units) to be used. |
| */ |
| uint grid[3]; |
| |
| /* Indirect compute parameters resource: If not NULL, block sizes are taken |
| * from this buffer instead, which is laid out as follows: |
| * |
| * struct { |
| * uint32_t num_blocks_x; |
| * uint32_t num_blocks_y; |
| * uint32_t num_blocks_z; |
| * }; |
| */ |
| struct pipe_resource *indirect; |
| unsigned indirect_offset; /**< must be 4 byte aligned */ |
| }; |
| |
| /** |
| * 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 |
| { |
| enum pipe_shader_ir ir_type; /**< IR type contained in prog. */ |
| 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. */ |
| }; |
| |
| /** |
| * Structure that contains a callback for debug messages from the driver back |
| * to the state tracker. |
| */ |
| struct pipe_debug_callback |
| { |
| /** |
| * Callback for the driver to report debug/performance/etc information back |
| * to the state tracker. |
| * |
| * \param data user-supplied data pointer |
| * \param id message type identifier, if pointed value is 0, then a |
| * new id is assigned |
| * \param type PIPE_DEBUG_TYPE_* |
| * \param format printf-style format string |
| * \param args args for format string |
| */ |
| void (*debug_message)(void *data, |
| unsigned *id, |
| enum pipe_debug_type type, |
| const char *fmt, |
| va_list args); |
| void *data; |
| }; |
| |
| /** |
| * Information about memory usage. All sizes are in kilobytes. |
| */ |
| struct pipe_memory_info |
| { |
| unsigned total_device_memory; /**< size of device memory, e.g. VRAM */ |
| unsigned avail_device_memory; /**< free device memory at the moment */ |
| unsigned total_staging_memory; /**< size of staging memory, e.g. GART */ |
| unsigned avail_staging_memory; /**< free staging memory at the moment */ |
| unsigned device_memory_evicted; /**< size of memory evicted (monotonic counter) */ |
| unsigned nr_device_memory_evictions; /**< # of evictions (monotonic counter) */ |
| }; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |