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Diffstat (limited to 'source/blender/gpu/GPU_matrix.h')
| -rw-r--r-- | source/blender/gpu/GPU_matrix.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/source/blender/gpu/GPU_matrix.h b/source/blender/gpu/GPU_matrix.h new file mode 100644 index 00000000000..f22c0cd5c4d --- /dev/null +++ b/source/blender/gpu/GPU_matrix.h @@ -0,0 +1,190 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2012 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): Alexandr Kuznetsov, Jason Wilkins, Mike Erwin + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file source/blender/gpu/GPU_matrix.h + * \ingroup gpu + */ + +#ifndef __GPU_MATRIX_H__ +#define __GPU_MATRIX_H__ + +#include "BLI_sys_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct Gwn_ShaderInterface; + +void gpuMatrixReset(void); /* to Identity transform & empty stack */ + +/* ModelView Matrix (2D or 3D) */ + +void gpuPushMatrix(void); /* TODO: PushCopy vs PushIdentity? */ +void gpuPopMatrix(void); + +void gpuLoadIdentity(void); + +void gpuScaleUniform(float factor); + + +/* 3D ModelView Matrix */ + +void gpuLoadMatrix(const float m[4][4]); +void gpuMultMatrix(const float m[4][4]); + +void gpuTranslate3f(float x, float y, float z); +void gpuTranslate3fv(const float vec[3]); +void gpuScale3f(float x, float y, float z); +void gpuScale3fv(const float vec[3]); +void gpuRotate3f(float deg, float x, float y, float z); /* axis of rotation should be a unit vector */ +void gpuRotate3fv(float deg, const float axis[3]); /* axis of rotation should be a unit vector */ +void gpuRotateAxis(float deg, char axis); /* TODO: enum for axis? */ + +void gpuLookAt(float eyeX, float eyeY, float eyeZ, float centerX, float centerY, float centerZ, float upX, float upY, float upZ); +/* TODO: variant that takes eye[3], center[3], up[3] */ + + +/* 2D ModelView Matrix */ + +void gpuTranslate2f(float x, float y); +void gpuTranslate2fv(const float vec[2]); +void gpuScale2f(float x, float y); +void gpuScale2fv(const float vec[2]); +void gpuRotate2D(float deg); + +/* Projection Matrix (2D or 3D) */ + +void gpuPushProjectionMatrix(void); +void gpuPopProjectionMatrix(void); + +/* 3D Projection Matrix */ + +void gpuLoadIdentityProjectionMatrix(void); +void gpuLoadProjectionMatrix(const float m[4][4]); + +void gpuOrtho(float left, float right, float bottom, float top, float near, float far); +void gpuFrustum(float left, float right, float bottom, float top, float near, float far); +void gpuPerspective(float fovy, float aspect, float near, float far); + +/* 3D Projection between Window and World Space */ + +void gpuProject(const float world[3], const float model[4][4], const float proj[4][4], const int view[4], float win[3]); +bool gpuUnProject(const float win[3], const float model[4][4], const float proj[4][4], const int view[4], float world[3]); + +/* 2D Projection Matrix */ + +void gpuOrtho2D(float left, float right, float bottom, float top); + + +/* functions to get matrix values */ +const float (*gpuGetModelViewMatrix(float m[4][4]))[4]; +const float (*gpuGetProjectionMatrix(float m[4][4]))[4]; +const float (*gpuGetModelViewProjectionMatrix(float m[4][4]))[4]; + +const float (*gpuGetNormalMatrix(float m[3][3]))[3]; +const float (*gpuGetNormalMatrixInverse(float m[3][3]))[3]; + + +/* set uniform values for currently bound shader */ +void gpuBindMatrices(const struct Gwn_ShaderInterface *); +bool gpuMatricesDirty(void); /* since last bind */ + + +/* Python API needs to be able to inspect the stack so errors raise exceptions instead of crashing. */ +#ifdef USE_GPU_PY_MATRIX_API +int GPU_matrix_stack_level_get_model_view(void); +int GPU_matrix_stack_level_get_projection(void); +/* static assert ensures this doesn't change! */ +#define GPU_PY_MATRIX_STACK_LEN 31 +#endif /* USE_GPU_PY_MATRIX_API */ + + +#ifdef __cplusplus +} +#endif + +#ifndef SUPPRESS_GENERIC_MATRIX_API + +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) +#define _GPU_MAT3_CONST_CAST(x) (_Generic((x), \ + void *: (const float (*)[3])(x), \ + float *: (const float (*)[3])(x), \ + float [9]: (const float (*)[3])(x), \ + float (*)[4]: (const float (*)[3])(x), \ + float [4][4]: (const float (*)[3])(x), \ + const void *: (const float (*)[3])(x), \ + const float *: (const float (*)[3])(x), \ + const float [9]: (const float (*)[3])(x), \ + const float (*)[3]: (const float (*)[3])(x), \ + const float [3][3]: (const float (*)[3])(x)) \ +) +#define _GPU_MAT3_CAST(x) (_Generic((x), \ + void *: (float (*)[3])(x), \ + float *: (float (*)[3])(x), \ + float [9]: (float (*)[3])(x), \ + float (*)[3]: (float (*)[3])(x), \ + float [3][3]: (float (*)[3])(x)) \ +) +#define _GPU_MAT4_CONST_CAST(x) (_Generic((x), \ + void *: (const float (*)[4])(x), \ + float *: (const float (*)[4])(x), \ + float [16]: (const float (*)[4])(x), \ + float (*)[4]: (const float (*)[4])(x), \ + float [4][4]: (const float (*)[4])(x), \ + const void *: (const float (*)[4])(x), \ + const float *: (const float (*)[4])(x), \ + const float [16]: (const float (*)[4])(x), \ + const float (*)[4]: (const float (*)[4])(x), \ + const float [4][4]: (const float (*)[4])(x)) \ +) +#define _GPU_MAT4_CAST(x) (_Generic((x), \ + void *: (float (*)[4])(x), \ + float *: (float (*)[4])(x), \ + float [16]: (float (*)[4])(x), \ + float (*)[4]: (float (*)[4])(x), \ + float [4][4]: (float (*)[4])(x)) \ +) +#else +# define _GPU_MAT3_CONST_CAST(x) (const float (*)[3])(x) +# define _GPU_MAT3_CAST(x) (float (*)[3])(x) +# define _GPU_MAT4_CONST_CAST(x) (const float (*)[4])(x) +# define _GPU_MAT4_CAST(x) (float (*)[4])(x) +#endif /* C11 */ + +/* make matrix inputs generic, to avoid warnings */ +# define gpuMultMatrix(x) gpuMultMatrix(_GPU_MAT4_CONST_CAST(x)) +# define gpuLoadMatrix(x) gpuLoadMatrix(_GPU_MAT4_CONST_CAST(x)) +# define gpuLoadProjectionMatrix(x) gpuLoadProjectionMatrix(_GPU_MAT4_CONST_CAST(x)) +# define gpuGetModelViewMatrix(x) gpuGetModelViewMatrix(_GPU_MAT4_CAST(x)) +# define gpuGetProjectionMatrix(x) gpuGetProjectionMatrix(_GPU_MAT4_CAST(x)) +# define gpuGetModelViewProjectionMatrix(x) gpuGetModelViewProjectionMatrix(_GPU_MAT4_CAST(x)) +# define gpuGetNormalMatrix(x) gpuGetNormalMatrix(_GPU_MAT3_CAST(x)) +# define gpuGetNormalMatrixInverse(x) gpuGetNormalMatrixInverse(_GPU_MAT3_CAST(x)) +#endif /* SUPPRESS_GENERIC_MATRIX_API */ + +#endif /* __GPU_MATRIX_H__ */ |