aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/gallium/include/pipe/p_state.h
diff options
context:
space:
mode:
Diffstat (limited to 'mesalib/src/gallium/include/pipe/p_state.h')
-rw-r--r--mesalib/src/gallium/include/pipe/p_state.h644
1 files changed, 644 insertions, 0 deletions
diff --git a/mesalib/src/gallium/include/pipe/p_state.h b/mesalib/src/gallium/include/pipe/p_state.h
new file mode 100644
index 000000000..e15860c4c
--- /dev/null
+++ 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
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 07:42:49 +0000