forked from KolibriOS/kolibrios
615 lines
18 KiB
C
615 lines
18 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
|
|
* 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 TUNGSTEN GRAPHICS 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 16
|
|
#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_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).
|
|
*/
|
|
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[4];
|
|
float translate[4];
|
|
};
|
|
|
|
|
|
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 */
|
|
} 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_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;
|
|
};
|
|
|
|
|
|
/**
|
|
* 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;
|
|
};
|
|
|
|
|
|
/**
|
|
* 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
|