/* * Cogl * * An object oriented GL/GLES Abstraction/Utility Layer * * Copyright (C) 2012 Intel Corporation. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see . * * */ #ifndef __COGL_DRIVER_H #define __COGL_DRIVER_H #include "cogl-context.h" #include "cogl-offscreen.h" #include "cogl-framebuffer-private.h" #include "cogl-attribute-private.h" typedef struct _CoglDriverVtable CoglDriverVtable; struct _CoglDriverVtable { /* TODO: factor this out since this is OpenGL specific and * so can be ignored by non-OpenGL drivers. */ CoglBool (* pixel_format_from_gl_internal) (CoglContext *context, GLenum gl_int_format, CoglPixelFormat *out_format); /* TODO: factor this out since this is OpenGL specific and * so can be ignored by non-OpenGL drivers. */ CoglPixelFormat (* pixel_format_to_gl) (CoglContext *context, CoglPixelFormat format, GLenum *out_glintformat, GLenum *out_glformat, GLenum *out_gltype); CoglBool (* update_features) (CoglContext *context, CoglError **error); CoglBool (* offscreen_allocate) (CoglOffscreen *offscreen, CoglError **error); void (* offscreen_free) (CoglOffscreen *offscreen); void (* framebuffer_flush_state) (CoglFramebuffer *draw_buffer, CoglFramebuffer *read_buffer, CoglFramebufferState state); void (* framebuffer_clear) (CoglFramebuffer *framebuffer, unsigned long buffers, float red, float green, float blue, float alpha); void (* framebuffer_query_bits) (CoglFramebuffer *framebuffer, int *red, int *green, int *blue, int *alpha); void (* framebuffer_finish) (CoglFramebuffer *framebuffer); void (* framebuffer_discard_buffers) (CoglFramebuffer *framebuffer, unsigned long buffers); void (* framebuffer_draw_attributes) (CoglFramebuffer *framebuffer, CoglPipeline *pipeline, CoglVerticesMode mode, int first_vertex, int n_vertices, CoglAttribute **attributes, int n_attributes, CoglDrawFlags flags); void (* framebuffer_draw_indexed_attributes) (CoglFramebuffer *framebuffer, CoglPipeline *pipeline, CoglVerticesMode mode, int first_vertex, int n_vertices, CoglIndices *indices, CoglAttribute **attributes, int n_attributes, CoglDrawFlags flags); /* Destroys any driver specific resources associated with the given * 2D texture. */ void (* texture_2d_free) (CoglTexture2D *tex_2d); /* Returns TRUE if the driver can support creating a 2D texture with * the given geometry and specified internal format. */ CoglBool (* texture_2d_can_create) (CoglContext *ctx, int width, int height, CoglPixelFormat internal_format); /* Initializes driver private state before allocating any specific * storage for a 2D texture, where base texture and texture 2D * members will already be initialized before passing control to * the driver. */ void (* texture_2d_init) (CoglTexture2D *tex_2d); /* Instantiates a new CoglTexture2D object with un-initialized * storage for a given size and internal format */ CoglTexture2D * (* texture_2d_new_with_size) (CoglContext *ctx, int width, int height, CoglPixelFormat internal_format, CoglError **error); /* Instantiates a new CoglTexture2D object with storage initialized * with the contents of the given bitmap, using the specified * internal format. */ CoglTexture2D * (* texture_2d_new_from_bitmap) (CoglBitmap *bmp, CoglPixelFormat internal_format, CoglError **error); #if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base) /* Instantiates a new CoglTexture2D object with storage initialized * with the contents of the given EGL image. * * This is optional for drivers to support */ CoglTexture2D * (* egl_texture_2d_new_from_image) (CoglContext *ctx, int width, int height, CoglPixelFormat format, EGLImageKHR image, CoglError **error); #endif /* Initialize the specified region of storage of the given texture * with the contents of the specified framebuffer region */ void (* texture_2d_copy_from_framebuffer) (CoglTexture2D *tex_2d, CoglFramebuffer *src_fb, int dst_x, int dst_y, int src_x, int src_y, int width, int height); /* If the given texture has a corresponding OpenGL texture handle * then return that. * * This is optional */ unsigned int (* texture_2d_get_gl_handle) (CoglTexture2D *tex_2d); /* Update all mipmap levels > 0 */ void (* texture_2d_generate_mipmap) (CoglTexture2D *tex_2d); /* Initialize the specified region of storage of the given texture * with the contents of the specified bitmap region * * Since this may need to create the underlying storage first * it may throw a NO_MEMORY error. */ CoglBool (* texture_2d_copy_from_bitmap) (CoglTexture2D *tex_2d, CoglBitmap *bitmap, int dst_x, int dst_y, int src_x, int src_y, int width, int height, CoglError **error); /* Reads back the full contents of the given texture and write it to * @data in the given @format and with the given @rowstride. * * This is optional */ void (* texture_2d_get_data) (CoglTexture2D *tex_2d, CoglPixelFormat format, int rowstride, uint8_t *data); /* Prepares for drawing by flushing the journal, framebuffer state, * pipeline state and attribute state. */ void (* flush_attributes_state) (CoglFramebuffer *framebuffer, CoglPipeline *pipeline, CoglFlushLayerState *layer_state, CoglDrawFlags flags, CoglAttribute **attributes, int n_attributes); /* Flushes the clip stack to the GPU using a combination of the * stencil buffer, scissor and clip plane state. */ void (* clip_stack_flush) (CoglClipStack *stack, CoglFramebuffer *framebuffer); /* Enables the driver to create some meta data to represent a buffer * but with no corresponding storage allocated yet. */ void (* buffer_create) (CoglBuffer *buffer); void (* buffer_destroy) (CoglBuffer *buffer); /* Maps a buffer into the CPU */ void * (* buffer_map_range) (CoglBuffer *buffer, size_t offset, size_t size, CoglBufferAccess access, CoglBufferMapHint hints, CoglError **error); /* Unmaps a buffer */ void (* buffer_unmap) (CoglBuffer *buffer); /* Uploads data to the buffer without needing to map it necessarily */ CoglBool (* buffer_set_data) (CoglBuffer *buffer, unsigned int offset, const void *data, unsigned int size, CoglError **error); }; #endif /* __COGL_DRIVER_H */