diff options
author | Brian Paul <[email protected]> | 2005-05-04 20:11:35 +0000 |
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committer | Brian Paul <[email protected]> | 2005-05-04 20:11:35 +0000 |
commit | e4b2356c07d31fbeeabb13b2fb47db703b473080 (patch) | |
tree | d8b7f1c7c9e7c84d84349485f942dd205dd4c16d /src/mesa/drivers/x11/xm_buffer.c | |
parent | ebef61f5c0950572f9c6a81b08f447957461675c (diff) |
Major check-in of changes for GL_EXT_framebuffer_object extension.
Main driver impacts:
- new code for creating the Mesa GLframebuffer
- new span/pixel read/write code
Some drivers not yet updated/tested.
Diffstat (limited to 'src/mesa/drivers/x11/xm_buffer.c')
-rw-r--r-- | src/mesa/drivers/x11/xm_buffer.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/mesa/drivers/x11/xm_buffer.c b/src/mesa/drivers/x11/xm_buffer.c new file mode 100644 index 00000000000..9f481aaba12 --- /dev/null +++ b/src/mesa/drivers/x11/xm_buffer.c @@ -0,0 +1,111 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +#include "glxheader.h" +#include "GL/xmesa.h" +#include "xmesaP.h" +#include "imports.h" +#include "renderbuffer.h" + + +static void +xmesa_delete_renderbuffer(struct gl_renderbuffer *rb) +{ + /* XXX this routine should really delete the attached ximage, etc. */ +} + + +/** + * Reallocate renderbuffer storage. + * This is called when the window's resized. It'll get called once for + * the front color renderbuffer and again for the back color renderbuffer. + */ +static GLboolean +xmesa_alloc_storage(GLcontext *ctx, struct gl_renderbuffer *rb, + GLenum internalFormat, GLuint width, GLuint height) +{ + struct xmesa_renderbuffer *xrb = (struct xmesa_renderbuffer *) rb; + + if (xrb->ximage) { + /* Needed by PIXELADDR1 macro */ + xrb->width1 = xrb->ximage->bytes_per_line; + xrb->origin1 = (GLubyte *) xrb->ximage->data + xrb->width1 * (height - 1); + + /* Needed by PIXELADDR2 macro */ + xrb->width2 = xrb->ximage->bytes_per_line / 2; + xrb->origin2 = (GLushort *) xrb->ximage->data + xrb->width2 * (height - 1); + + /* Needed by PIXELADDR3 macro */ + xrb->width3 = xrb->ximage->bytes_per_line; + xrb->origin3 = (GLubyte *) xrb->ximage->data + xrb->width3 * (height - 1); + + /* Needed by PIXELADDR4 macro */ + xrb->width4 = xrb->ximage->width; + xrb->origin4 = (GLuint *) xrb->ximage->data + xrb->width4 * (height - 1); + } + else { + assert(xrb->pixmap); + } + + /* for the FLIP macro: */ + xrb->bottom = height - 1; + + rb->Width = width; + rb->Height = height; + rb->InternalFormat = internalFormat; + + return GL_TRUE; +} + + +struct xmesa_renderbuffer * +xmesa_new_renderbuffer(GLcontext *ctx, GLuint name, GLboolean rgbMode) +{ + struct xmesa_renderbuffer *xrb = CALLOC_STRUCT(xmesa_renderbuffer); + if (xrb) { + GLuint name = 0; + _mesa_init_renderbuffer(&xrb->Base, name); + + xrb->Base.Delete = xmesa_delete_renderbuffer; + xrb->Base.AllocStorage = xmesa_alloc_storage; + + if (rgbMode) { + xrb->Base.InternalFormat = GL_RGBA; + xrb->Base._BaseFormat = GL_RGBA; + xrb->Base.DataType = GL_UNSIGNED_BYTE; + } + else { + xrb->Base.InternalFormat = GL_COLOR_INDEX; + xrb->Base._BaseFormat = GL_COLOR_INDEX; + xrb->Base.DataType = GL_UNSIGNED_INT; + } + xrb->Base.ComponentSizes[0] = 0; /* XXX fix? */ + } + return xrb; +} + + + + |