diff options
Diffstat (limited to 'src/mesa/drivers/x11/xm_surface.c')
-rw-r--r-- | src/mesa/drivers/x11/xm_surface.c | 395 |
1 files changed, 395 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..58081a36a0 --- /dev/null +++ b/src/mesa/drivers/x11/xm_surface.c @@ -0,0 +1,395 @@ +/* + * 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.h + * 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" + + +/** + * An xm_surface is derived from a softpipe_surface + */ +struct xmesa_surface +{ + struct softpipe_surface sps; + struct xmesa_renderbuffer *xrb; /** ptr back to matching xmesa_renderbuffer */ + struct gl_renderbuffer *rb; /* ptr to matching gl_renderbuffer */ +}; + + +/** + * Cast wrapper + */ +static INLINE struct xmesa_surface * +xmesa_surface(struct softpipe_surface *sps) +{ + return (struct xmesa_surface *) sps; +} + + +/** + * quad reading/writing + * These functions are just wrappers around the existing renderbuffer + * functions. + */ + +static void +read_quad_f(struct softpipe_surface *gs, GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(gs); + struct xmesa_renderbuffer *xrb = xmsurf->xrb; + 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 *gs, GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(gs); + struct xmesa_renderbuffer *xrb = xmsurf->xrb; + 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 *gs, GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(gs); + struct xmesa_renderbuffer *xrb = xmsurf->xrb; + 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 *gs, GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(gs); + struct xmesa_renderbuffer *xrb = xmsurf->xrb; + 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 *gs, GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(gs); + struct xmesa_renderbuffer *xrb = xmsurf->xrb; + 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 *gs, GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(gs); + struct xmesa_renderbuffer *xrb = xmsurf->xrb; + 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 *gs, GLuint count, GLint x, GLint y, + GLubyte rgba[NUM_CHANNELS]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(gs); + struct xmesa_renderbuffer *xrb = xmsurf->xrb; + GET_CURRENT_CONTEXT(ctx); + xrb->Base.PutMonoRow(ctx, &xrb->Base, count, x, y, rgba, NULL); +} + + +static struct xmesa_surface * +create_surface(XMesaContext xmctx, struct xmesa_renderbuffer *xrb) +{ + struct xmesa_surface *xmsurf; + + xmsurf = CALLOC_STRUCT(xmesa_surface); + if (xmsurf) { + xmsurf->xrb = xrb; + xmsurf->sps.surface.width = xrb->Base.Width; + xmsurf->sps.surface.height = xrb->Base.Height; + + xmsurf->sps.read_quad_f = read_quad_f; + xmsurf->sps.read_quad_f_swz = read_quad_f_swz; + xmsurf->sps.read_quad_ub = read_quad_ub; + xmsurf->sps.write_quad_f = write_quad_f; + xmsurf->sps.write_quad_f_swz = write_quad_f_swz; + xmsurf->sps.write_quad_ub = write_quad_ub; + xmsurf->sps.write_mono_row_ub = write_mono_row_ub; + +#if 0 + if (xrb->ximage) { + xmsurf->sps.surface.ptr = (GLubyte *) xrb->ximage->data; + xmsurf->sps.surface.stride = xrb->ximage->bytes_per_line; + xmsurf->sps.surface.cpp = xrb->ximage->depth; + + } +#endif + } + return xmsurf; +} + + +static void +free_surface(struct softpipe_surface *sps) +{ + /* XXX may need to do more in the future */ + free(sps); +} + + +/** + * Return generic surface pointer corresponding to the current color buffer. + */ +struct pipe_surface * +xmesa_get_color_surface(GLcontext *ctx, GLuint buf) +{ + XMesaContext xmctx = XMESA_CONTEXT(ctx); + struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0][buf]; + struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb); + struct softpipe_surface *sps = (struct softpipe_surface *) xrb->pSurface; + + if (!sps) { + xrb->pSurface = create_surface(xmctx, xrb); + } + else if (sps->surface.width != rb->Width || + sps->surface.height != rb->Height) { + free_surface(sps); + xrb->pSurface = create_surface(xmctx, xrb); + } + + return (struct pipe_surface *) xrb->pSurface; +} + + + + +static void +read_quad_z(struct softpipe_surface *sps, + GLint x, GLint y, GLuint zzzz[QUAD_SIZE]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(sps); + struct gl_renderbuffer *rb = xmsurf->rb; + GLushort temp[4]; + GLuint i; + GET_CURRENT_CONTEXT(ctx); + rb->GetRow(ctx, rb, 2, x, y, temp); + rb->GetRow(ctx, rb, 2, x, y + 1, temp + 2); + /* convert from GLushort to GLuint */ + for (i = 0; i < 4; i++) { + zzzz[i] = temp[i]; + } +} + +static void +write_quad_z(struct softpipe_surface *sps, + GLint x, GLint y, const GLuint zzzz[QUAD_SIZE]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(sps); + struct gl_renderbuffer *rb = xmsurf->rb; + GLushort temp[4]; + GLuint i; + GET_CURRENT_CONTEXT(ctx); + /* convert from GLuint to GLushort */ + for (i = 0; i < 4; i++) { + temp[i] = zzzz[i]; + } + rb->PutRow(ctx, rb, 2, x, y, temp, NULL); + rb->PutRow(ctx, rb, 2, x, y + 1, temp + 2, NULL); +} + + +static struct xmesa_surface * +create_z_surface(XMesaContext xmctx, struct gl_renderbuffer *rb) +{ + struct xmesa_surface *xmsurf; + + xmsurf = CALLOC_STRUCT(xmesa_surface); + if (xmsurf) { + xmsurf->sps.surface.format = PIPE_FORMAT_U_Z16; + xmsurf->sps.surface.width = rb->Width; + xmsurf->sps.surface.height = rb->Height; + xmsurf->sps.read_quad_z = read_quad_z; + xmsurf->sps.write_quad_z = write_quad_z; + xmsurf->rb = rb; + } + return xmsurf; +} + + + + +static void +read_quad_stencil(struct softpipe_surface *sps, + GLint x, GLint y, GLubyte ssss[QUAD_SIZE]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(sps); + struct gl_renderbuffer *rb = xmsurf->rb; + GET_CURRENT_CONTEXT(ctx); + rb->GetRow(ctx, rb, 2, x, y, ssss); + rb->GetRow(ctx, rb, 2, x, y + 1, ssss + 2); +} + +static void +write_quad_stencil(struct softpipe_surface *sps, + GLint x, GLint y, const GLubyte ssss[QUAD_SIZE]) +{ + struct xmesa_surface *xmsurf = xmesa_surface(sps); + struct gl_renderbuffer *rb = xmsurf->rb; + GET_CURRENT_CONTEXT(ctx); + rb->PutRow(ctx, rb, 2, x, y, ssss, NULL); + rb->PutRow(ctx, rb, 2, x, y + 1, ssss + 2, NULL); +} + +static struct xmesa_surface * +create_stencil_surface(XMesaContext xmctx, struct gl_renderbuffer *rb) +{ + struct xmesa_surface *xmsurf; + + xmsurf = CALLOC_STRUCT(xmesa_surface); + if (xmsurf) { + xmsurf->sps.surface.format = PIPE_FORMAT_U_S8; + xmsurf->sps.surface.width = rb->Width; + xmsurf->sps.surface.height = rb->Height; + xmsurf->sps.read_quad_stencil = read_quad_stencil; + xmsurf->sps.write_quad_stencil = write_quad_stencil; + xmsurf->rb = rb; + } + return xmsurf; +} + + + + +/** + * Return a pipe_surface that wraps the current Z/depth buffer. + * XXX this is pretty much a total hack until gl_renderbuffers and + * pipe_surfaces are merged... + */ +struct pipe_surface * +xmesa_get_z_surface(GLcontext *ctx) +{ + XMesaContext xmctx = XMESA_CONTEXT(ctx); + struct gl_renderbuffer *rb = ctx->DrawBuffer->_DepthBuffer; + static struct xmesa_surface *xms = NULL; + + if (!rb) + return NULL; + + if (!xms) { + xms = create_z_surface(xmctx, rb); + } + else if (xms->sps.surface.width != rb->Width || + xms->sps.surface.height != rb->Height) { + free_surface(&xms->sps); + xms = create_z_surface(xmctx, rb); + } + + return (struct pipe_surface *) &xms->sps.surface; +} + + +struct pipe_surface * +xmesa_get_stencil_surface(GLcontext *ctx) +{ + XMesaContext xmctx = XMESA_CONTEXT(ctx); + struct gl_renderbuffer *rb = ctx->DrawBuffer->_StencilBuffer; + static struct xmesa_surface *xms = NULL; + + if (!rb) + return NULL; + + if (!xms) { + xms = create_stencil_surface(xmctx, rb); + } + else if (xms->sps.surface.width != rb->Width || + xms->sps.surface.height != rb->Height) { + free_surface(&xms->sps); + xms = create_stencil_surface(xmctx, rb); + } + + return (struct pipe_surface *) &xms->sps.surface; +} + |