/* * 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_context.h" #include "pipe/p_defines.h" #include "pipe/softpipe/sp_context.h" #include "state_tracker/st_context.h" static INLINE struct xmesa_surface * xmesa_surf(struct softpipe_surface *sps) { return (struct xmesa_surface *) sps; } static INLINE struct xmesa_renderbuffer * xmesa_rb(struct softpipe_surface *sps) { struct xmesa_surface *xms = xmesa_surf(sps); return xms->xrb; } #define FLIP(Y) Y = xrb->St.Base.Height - (Y) - 1; /** * quad reading/writing * These functions are just wrappers around the existing renderbuffer * functions. * Note that Y=0 is the top of the surface. */ 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); FLIP(y); xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y, temp); xrb->St.Base.GetRow(ctx, &xrb->St.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); FLIP(y); xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y, temp); xrb->St.Base.GetRow(ctx, &xrb->St.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); FLIP(y); for (i = 0; i < 16; i++) { UNCLAMPED_FLOAT_TO_UBYTE(temp[i], src[i]); } xrb->St.Base.PutRow(ctx, &xrb->St.Base, 2, x, y, temp, NULL); xrb->St.Base.PutRow(ctx, &xrb->St.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); FLIP(y); 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->St.Base.PutRow(ctx, &xrb->St.Base, 2, x, y, temp, NULL); xrb->St.Base.PutRow(ctx, &xrb->St.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); FLIP(y); xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y, rgba); xrb->St.Base.GetRow(ctx, &xrb->St.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); FLIP(y); xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y, rgba); xrb->St.Base.GetRow(ctx, &xrb->St.Base, 2, x, y - 1, rgba + 2); } static void get_tile(struct pipe_surface *ps, GLuint x, GLuint y, GLuint w, GLuint h, GLfloat *p) { struct xmesa_renderbuffer *xrb = xmesa_rb((struct softpipe_surface *) ps); GLubyte tmp[MAX_WIDTH * 4]; GLuint i, j; GET_CURRENT_CONTEXT(ctx); FLIP(y); for (i = 0; i < h; i++) { xrb->St.Base.GetRow(ctx, &xrb->St.Base, w, x, y - i, tmp); for (j = 0; j < w * 4; j++) { p[j] = UBYTE_TO_FLOAT(tmp[j]); } p += w * 4; } } static void put_tile(struct pipe_surface *ps, GLuint x, GLuint y, GLuint w, GLuint h, const GLfloat *p) { assert(0); } /** * Called to create a pipe_surface for each X renderbuffer. * Note: this is being used instead of pipe->surface_alloc() since we * have special/unique quad read/write functions for X. */ struct pipe_surface * xmesa_new_color_surface(struct pipe_context *pipe, GLuint pipeFormat) { struct xmesa_surface *xms = CALLOC_STRUCT(xmesa_surface); assert(pipeFormat); xms->surface.surface.format = pipeFormat; xms->surface.surface.refcount = 1; switch (pipeFormat) { case PIPE_FORMAT_U_A8_R8_G8_B8: xms->surface.read_quad_f_swz = read_quad_f; xms->surface.read_quad_f = read_quad_f; xms->surface.read_quad_f_swz = read_quad_f_swz; xms->surface.read_quad_ub = read_quad_ub; xms->surface.write_quad_f = write_quad_f; xms->surface.write_quad_f_swz = write_quad_f_swz; xms->surface.write_quad_ub = write_quad_ub; xms->surface.surface.get_tile = get_tile; xms->surface.surface.put_tile = put_tile; break; case PIPE_FORMAT_S8_Z24: softpipe_init_surface_funcs(&xms->surface); /* xms->surface.read_quad_z = 1; xms->surface.write_quad_z = 1; */ break; default: abort(); } /* Note, the region we allocate doesn't actually have any storage * since we're drawing into an XImage or Pixmap. * The region's size will get set in the xmesa_alloc_front/back_storage() * functions. */ if (pipe) xms->surface.surface.region = pipe->region_alloc(pipe, 1, 0, 0, 0x0); return &xms->surface.surface; } /** * Called via pipe->surface_alloc() to create new surfaces (textures, * renderbuffers, etc. */ struct pipe_surface * xmesa_surface_alloc(struct pipe_context *pipe, GLuint pipeFormat) { struct xmesa_surface *xms = CALLOC_STRUCT(xmesa_surface); assert(pipeFormat); xms->surface.surface.format = pipeFormat; xms->surface.surface.refcount = 1; /* * This is really just a softpipe surface, not an XImage/Pixmap surface. */ softpipe_init_surface_funcs(&xms->surface); assert(pipe); xms->surface.surface.region = pipe->region_alloc(pipe, 1, 0, 0, 0x0); return &xms->surface.surface; } const GLuint * xmesa_supported_formats(struct pipe_context *pipe, GLuint *numFormats) { static const GLuint formats[] = { PIPE_FORMAT_U_A8_R8_G8_B8, PIPE_FORMAT_S8_Z24 }; *numFormats = 2; return formats; }