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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef GPU_SHADER
# pragma once
# include "GPU_shader.h"
# include "GPU_shader_shared_utils.h"
typedef struct ViewInfos ViewInfos;
typedef struct ObjectMatrices ObjectMatrices;
typedef struct ObjectInfos ObjectInfos;
typedef struct VolumeInfos VolumeInfos;
typedef struct CurvesInfos CurvesInfos;
typedef struct DrawCommand DrawCommand;
typedef struct DrawCommandIndexed DrawCommandIndexed;
typedef struct DispatchCommand DispatchCommand;
#endif
#define DRW_SHADER_SHARED_H
#define DRW_RESOURCE_CHUNK_LEN 512
/* Define the maximum number of grid we allow in a volume UBO. */
#define DRW_GRID_PER_VOLUME_MAX 16
/* Define the maximum number of attribute we allow in a curves UBO.
* This should be kept in sync with `GPU_ATTR_MAX` */
#define DRW_ATTRIBUTE_PER_CURVES_MAX 15
struct ViewInfos {
/* View matrices */
float4x4 persmat;
float4x4 persinv;
float4x4 viewmat;
float4x4 viewinv;
float4x4 winmat;
float4x4 wininv;
float4 clip_planes[6];
float4 viewvecs[2];
/* Should not be here. Not view dependent (only main view). */
float4 viewcamtexcofac;
float2 viewport_size;
float2 viewport_size_inverse;
/** Frustum culling data. */
/** NOTE: vec3 arrays are padded to vec4. */
float4 frustum_corners[8];
float4 frustum_planes[6];
};
BLI_STATIC_ASSERT_ALIGN(ViewInfos, 16)
/* Do not override old definitions if the shader uses this header but not shader info. */
#ifdef USE_GPU_SHADER_CREATE_INFO
/* TODO(@fclem): Mass rename. */
# define ViewProjectionMatrix drw_view.persmat
# define ViewProjectionMatrixInverse drw_view.persinv
# define ViewMatrix drw_view.viewmat
# define ViewMatrixInverse drw_view.viewinv
# define ProjectionMatrix drw_view.winmat
# define ProjectionMatrixInverse drw_view.wininv
# define clipPlanes drw_view.clip_planes
# define ViewVecs drw_view.viewvecs
# define CameraTexCoFactors drw_view.viewcamtexcofac
#endif
struct ObjectMatrices {
float4x4 drw_modelMatrix;
float4x4 drw_modelMatrixInverse;
};
BLI_STATIC_ASSERT_ALIGN(ViewInfos, 16)
struct ObjectInfos {
float4 drw_OrcoTexCoFactors[2];
float4 drw_ObjectColor;
float4 drw_Infos;
};
BLI_STATIC_ASSERT_ALIGN(ViewInfos, 16)
struct VolumeInfos {
/* Object to grid-space. */
float4x4 grids_xform[DRW_GRID_PER_VOLUME_MAX];
/* NOTE: vec4 for alignment. Only float3 needed. */
float4 color_mul;
float density_scale;
float temperature_mul;
float temperature_bias;
float _pad;
};
BLI_STATIC_ASSERT_ALIGN(VolumeInfos, 16)
struct CurvesInfos {
/* Per attribute scope, follows loading order.
* NOTE: uint as bool in GLSL is 4 bytes.
* NOTE: GLSL pad arrays of scalar to 16 bytes (std140). */
uint4 is_point_attribute[DRW_ATTRIBUTE_PER_CURVES_MAX];
};
BLI_STATIC_ASSERT_ALIGN(CurvesInfos, 16)
#define OrcoTexCoFactors (drw_infos[resource_id].drw_OrcoTexCoFactors)
#define ObjectInfo (drw_infos[resource_id].drw_Infos)
#define ObjectColor (drw_infos[resource_id].drw_ObjectColor)
/* Indirect commands structures. */
struct DrawCommand {
uint v_count;
uint i_count;
uint v_first;
uint i_first;
};
BLI_STATIC_ASSERT_ALIGN(DrawCommand, 16)
struct DrawCommandIndexed {
uint v_count;
uint i_count;
uint v_first;
uint base_index;
uint i_first;
uint _pad0;
uint _pad1;
uint _pad2;
};
BLI_STATIC_ASSERT_ALIGN(DrawCommandIndexed, 16)
struct DispatchCommand {
uint num_groups_x;
uint num_groups_y;
uint num_groups_z;
uint _pad0;
};
BLI_STATIC_ASSERT_ALIGN(DispatchCommand, 16)
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