diff options
Diffstat (limited to 'src/mesa/drivers/x11/xm_surface.c')
-rw-r--r-- | src/mesa/drivers/x11/xm_surface.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/mesa/drivers/x11/xm_surface.c b/src/mesa/drivers/x11/xm_surface.c new file mode 100644 index 0000000000..17f5f28a9d --- /dev/null +++ b/src/mesa/drivers/x11/xm_surface.c @@ -0,0 +1,214 @@ +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2007 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. + */ + + +/** + * \file xm_surface.c + * Code to allow the softpipe code to write to X windows/buffers. + * This is a bit of a hack for now. We've basically got two different + * abstractions for color buffers: gl_renderbuffer and softpipe_surface. + * They'll need to get merged someday... + * For now, they're separate things that point to each other. + */ + + +#include "glxheader.h" +#include "GL/xmesa.h" +#include "xmesaP.h" +#include "context.h" +#include "imports.h" +#include "macros.h" +#include "framebuffer.h" +#include "renderbuffer.h" + +#include "pipe/p_state.h" +#include "pipe/p_defines.h" +#include "pipe/softpipe/sp_context.h" +#include "pipe/softpipe/sp_surface.h" + + +static void * +map_surface_buffer(struct pipe_buffer *pb, GLuint access_mode) +{ + /* no-op */ + return NULL; +} + + +static void +unmap_surface_buffer(struct pipe_buffer *pb) +{ + /* no-op */ +} + + +static INLINE struct xmesa_renderbuffer * +xmesa_rb(struct softpipe_surface *sps) +{ + return (struct xmesa_renderbuffer *) sps->surface.rb; +} + + +/** + * quad reading/writing + * These functions are just wrappers around the existing renderbuffer + * functions. + */ + +static void +read_quad_f(struct softpipe_surface *sps, GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS]) +{ + struct xmesa_renderbuffer *xrb = xmesa_rb(sps); + GLubyte temp[16]; + GLfloat *dst = (GLfloat *) rgba; + GLuint i; + GET_CURRENT_CONTEXT(ctx); + xrb->Base.GetRow(ctx, &xrb->Base, 2, x, y, temp); + xrb->Base.GetRow(ctx, &xrb->Base, 2, x, y + 1, temp + 8); + for (i = 0; i < 16; i++) { + dst[i] = UBYTE_TO_FLOAT(temp[i]); + } +} + +static void +read_quad_f_swz(struct softpipe_surface *sps, GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE]) +{ + struct xmesa_renderbuffer *xrb = xmesa_rb(sps); + GLubyte temp[16]; + GLfloat *dst = (GLfloat *) rrrr; + GLuint i, j; + GET_CURRENT_CONTEXT(ctx); + xrb->Base.GetRow(ctx, &xrb->Base, 2, x, y, temp); + xrb->Base.GetRow(ctx, &xrb->Base, 2, x, y + 1, temp + 8); + for (i = 0; i < 4; i++) { + for (j = 0; j < 4; j++) { + dst[j * 4 + i] = UBYTE_TO_FLOAT(temp[i * 4 + j]); + } + } +} + +static void +write_quad_f(struct softpipe_surface *sps, GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS]) +{ + struct xmesa_renderbuffer *xrb = xmesa_rb(sps); + GLubyte temp[16]; + const GLfloat *src = (const GLfloat *) rgba; + GLuint i; + GET_CURRENT_CONTEXT(ctx); + for (i = 0; i < 16; i++) { + UNCLAMPED_FLOAT_TO_UBYTE(temp[i], src[i]); + } + xrb->Base.PutRow(ctx, &xrb->Base, 2, x, y, temp, NULL); + xrb->Base.PutRow(ctx, &xrb->Base, 2, x, y + 1, temp + 8, NULL); +} + +static void +write_quad_f_swz(struct softpipe_surface *sps, GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE]) +{ + struct xmesa_renderbuffer *xrb = xmesa_rb(sps); + GLubyte temp[16]; + const GLfloat *src = (const GLfloat *) rrrr; + GLuint i, j; + GET_CURRENT_CONTEXT(ctx); + for (i = 0; i < 4; i++) { + for (j = 0; j < 4; j++) { + UNCLAMPED_FLOAT_TO_UBYTE(temp[j * 4 + i], src[i * 4 + j]); + } + } + xrb->Base.PutRow(ctx, &xrb->Base, 2, x, y, temp, NULL); + xrb->Base.PutRow(ctx, &xrb->Base, 2, x, y + 1, temp + 8, NULL); +} + +static void +read_quad_ub(struct softpipe_surface *sps, GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS]) +{ + struct xmesa_renderbuffer *xrb = xmesa_rb(sps); + GET_CURRENT_CONTEXT(ctx); + xrb->Base.GetRow(ctx, &xrb->Base, 2, x, y, rgba); + xrb->Base.GetRow(ctx, &xrb->Base, 2, x, y + 1, rgba + 2); +} + +static void +write_quad_ub(struct softpipe_surface *sps, GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS]) +{ + struct xmesa_renderbuffer *xrb = xmesa_rb(sps); + GET_CURRENT_CONTEXT(ctx); + xrb->Base.GetRow(ctx, &xrb->Base, 2, x, y, rgba); + xrb->Base.GetRow(ctx, &xrb->Base, 2, x, y + 1, rgba + 2); +} + +static void +write_mono_row_ub(struct softpipe_surface *sps, GLuint count, GLint x, GLint y, + GLubyte rgba[NUM_CHANNELS]) +{ + struct xmesa_renderbuffer *xrb = xmesa_rb(sps); + GET_CURRENT_CONTEXT(ctx); + xrb->Base.PutMonoRow(ctx, &xrb->Base, count, x, y, rgba, NULL); +} + + +static void +resize_surface(struct pipe_surface *ps, GLuint width, GLuint height) +{ + ps->width = width; + ps->height = height; +} + + +/** + * Called to create a pipe_surface for each X renderbuffer. + */ +struct pipe_surface * +xmesa_new_surface(struct xmesa_renderbuffer *xrb) +{ + struct softpipe_surface *sps; + + sps = CALLOC_STRUCT(softpipe_surface); + if (!sps) + return NULL; + + sps->surface.rb = xrb; + sps->surface.width = xrb->Base.Width; + sps->surface.height = xrb->Base.Height; + + sps->read_quad_f = read_quad_f; + sps->read_quad_f_swz = read_quad_f_swz; + sps->read_quad_ub = read_quad_ub; + sps->write_quad_f = write_quad_f; + sps->write_quad_f_swz = write_quad_f_swz; + sps->write_quad_ub = write_quad_ub; + sps->write_mono_row_ub = write_mono_row_ub; + + sps->surface.buffer.map = map_surface_buffer; + sps->surface.buffer.unmap = unmap_surface_buffer; + sps->surface.resize = resize_surface; + + return &sps->surface; +} |