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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2022 Blender Foundation. All rights reserved. */
/** \file
* \ingroup gpu
*/
#ifndef USE_GPU_SHADER_CREATE_INFO
# include "GPU_shader_shared_utils.h"
#endif
struct TrianglePaintInput {
int3 vert_indices;
float _pad0;
/**
* Delta barycentric coordinates between 2 neighboring UV's in the U direction.
*
* Only the first two coordinates are stored. The third should be recalculated on the fly.
*/
float2 delta_barycentric_coord;
float2 _pad1;
};
BLI_STATIC_ASSERT_ALIGN(TrianglePaintInput, 16)
struct PackedPixelRow {
/** Barycentric coordinate of the first pixel. */
float2 start_barycentric_coord;
/** Image coordinate starting of the first pixel. First 16 bits is u, other 16 bits is v. */
uint start_image_coordinate;
/**
* 16 bits: Reference to the pbvh triangle index.
* 16 bits: Number of sequential pixels encoded in this package.
*/
uint encoded;
};
BLI_STATIC_ASSERT_ALIGN(TrianglePaintInput, 16)
#define PIXEL_ROW_START_IMAGE_COORD(row) \
ivec2(row.start_image_coordinate & 0xffff, (row.start_image_coordinate & 0xffff0000) >> 16)
#define PIXEL_ROW_LEN(row) uint(row.encoded & 0xffff);
#define PIXEL_ROW_PRIM_INDEX(row) uint((row.encoded & 0xffff0000) >> 16)
struct PaintBrushTestData {
/* world to local matrix for clipping plane tests. */
float4x4 symm_rot_mat_inv;
};
BLI_STATIC_ASSERT_ALIGN(PaintBrushTestData, 16)
struct PaintBrushData {
float4 color;
PaintBrushTestData test;
float alpha;
int falloff_shape;
float _pad0[2];
};
BLI_STATIC_ASSERT_ALIGN(PaintBrushData, 16)
struct PaintStepData {
float3 location;
float radius;
/* Circle falloff. */
float4 plane_view;
float hardness;
float strength;
int mirror_symmetry_pass;
int _pad0[1];
};
BLI_STATIC_ASSERT_ALIGN(PaintStepData, 16);
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