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Diffstat (limited to 'source/blender/gpu/GPU_extensions.h')
-rw-r--r-- | source/blender/gpu/GPU_extensions.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/source/blender/gpu/GPU_extensions.h b/source/blender/gpu/GPU_extensions.h new file mode 100644 index 00000000000..66b19449419 --- /dev/null +++ b/source/blender/gpu/GPU_extensions.h @@ -0,0 +1,145 @@ +/** + * $Id$ + * + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This shader 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. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * This shader 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 shader; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2005 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): Brecht Van Lommel. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#ifndef GPU_EXTENSIONS_H +#define GPU_EXTENSIONS_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* GPU extensions support */ + +struct Image; +struct ImageUser; + +struct GPUTexture; +typedef struct GPUTexture GPUTexture; + +struct GPUFrameBuffer; +typedef struct GPUFrameBuffer GPUFrameBuffer; + +struct GPUShader; +typedef struct GPUShader GPUShader; + +void GPU_extensions_disable(void); +void GPU_extensions_init(void); /* call this before running any of the functions below */ +void GPU_extensions_exit(void); +int GPU_extensions_minimum_support(void); +int GPU_print_error(char *str); + +/* GPU Texture + - always returns unsigned char RGBA textures + - if texture with non square dimensions is created, depending on the + graphics card capabilities the texture may actually be stored in a + larger texture with power of two dimensions. the actual dimensions + may be querd with GPU_texture_opengl_width/height. GPU_texture_coord_2f + calls glTexCoord2f with the coordinates adjust for this. + - can use reference counting: + - reference counter after GPU_texture_create is 1 + - GPU_texture_ref increases by one + - GPU_texture_free decreases by one, and frees if 0 + - if created with from_blender, will not free the texture +*/ + +GPUTexture *GPU_texture_create_1D(int w, float *pixels); +GPUTexture *GPU_texture_create_2D(int w, int h, float *pixels); +GPUTexture *GPU_texture_create_depth(int w, int h); +GPUTexture *GPU_texture_from_blender(struct Image *ima, + struct ImageUser *iuser, double time); +void GPU_texture_free(GPUTexture *tex); + +void GPU_texture_ref(GPUTexture *tex); + +void GPU_texture_bind(GPUTexture *tex, int number); +void GPU_texture_unbind(GPUTexture *tex); + +GPUFrameBuffer *GPU_texture_framebuffer(GPUTexture *tex); + +int GPU_texture_target(GPUTexture *tex); +int GPU_texture_opengl_width(GPUTexture *tex); +int GPU_texture_opengl_height(GPUTexture *tex); + +/* GPU Framebuffer + - this is a wrapper for an OpenGL framebuffer object (FBO). in practice + multiple FBO's may be created, to get around limitations on the number + of attached textures and the dimension requirements. + - after any of the GPU_framebuffer_* functions, GPU_framebuffer_restore must + be called before rendering to the window framebuffer again */ + +GPUFrameBuffer *GPU_framebuffer_create(); +int GPU_framebuffer_texture_attach(GPUFrameBuffer *fb, GPUTexture *tex); +void GPU_framebuffer_texture_detach(GPUFrameBuffer *fb, GPUTexture *tex); +void GPU_framebuffer_texture_bind(GPUFrameBuffer *fb, GPUTexture *tex); +void GPU_framebuffer_texture_unbind(GPUFrameBuffer *fb, GPUTexture *tex); +void GPU_framebuffer_free(GPUFrameBuffer *fb); + +void GPU_framebuffer_restore(); + +/* GPU Shader + - only for fragment shaders now + - must call texture bind before setting a texture as uniform! */ + +GPUShader *GPU_shader_create(const char *vertexcode, const char *fragcode, const char *libcode); /*GPUShader *lib);*/ +/*GPUShader *GPU_shader_create_lib(const char *code);*/ +void GPU_shader_free(GPUShader *shader); + +void GPU_shader_bind(GPUShader *shader); +void GPU_shader_unbind(); + +int GPU_shader_get_uniform(GPUShader *shader, char *name); +void GPU_shader_uniform_vector(GPUShader *shader, int location, int length, + int arraysize, float *value); +void GPU_shader_uniform_texture(GPUShader *shader, int location, GPUTexture *tex); + +int GPU_shader_get_attribute(GPUShader *shader, char *name); + +/* Vertex attributes for shaders */ + +#define GPU_MAX_ATTRIB 32 + +typedef struct GPUVertexAttribs { + struct { + int type; + int glindex; + char name[32]; + } layer[GPU_MAX_ATTRIB]; + + int totlayer; +} GPUVertexAttribs; + +#ifdef __cplusplus +} +#endif + +#endif + |