/* * Mesa 3-D graphics library * Version: 6.5.2 * * Copyright (C) 1999-2006 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_dd.h * General device driver functions for Xlib driver. */ #include "glxheader.h" #include "bufferobj.h" #include "buffers.h" #include "context.h" #include "colormac.h" #include "depth.h" #include "drawpix.h" #include "extensions.h" #include "framebuffer.h" #include "macros.h" #include "image.h" #include "imports.h" #include "mtypes.h" #include "state.h" #include "texobj.h" #include "teximage.h" #include "texstore.h" #include "texformat.h" #include "xmesaP.h" #include "pipe/softpipe/sp_context.h" #include "state_tracker/st_public.h" #include "state_tracker/st_context.h" #include "state_tracker/st_draw.h" /* * Dithering kernels and lookup tables. */ const int xmesa_kernel8[DITH_DY * DITH_DX] = { 0 * MAXC, 8 * MAXC, 2 * MAXC, 10 * MAXC, 12 * MAXC, 4 * MAXC, 14 * MAXC, 6 * MAXC, 3 * MAXC, 11 * MAXC, 1 * MAXC, 9 * MAXC, 15 * MAXC, 7 * MAXC, 13 * MAXC, 5 * MAXC, }; const short xmesa_HPCR_DRGB[3][2][16] = { { { 16, -4, 1,-11, 14, -6, 3, -9, 15, -5, 2,-10, 13, -7, 4, -8}, {-15, 5, 0, 12,-13, 7, -2, 10,-14, 6, -1, 11,-12, 8, -3, 9} }, { {-11, 15, -7, 3, -8, 14, -4, 2,-10, 16, -6, 4, -9, 13, -5, 1}, { 12,-14, 8, -2, 9,-13, 5, -1, 11,-15, 7, -3, 10,-12, 6, 0} }, { { 6,-18, 26,-14, 2,-22, 30,-10, 8,-16, 28,-12, 4,-20, 32, -8}, { -4, 20,-24, 16, 0, 24,-28, 12, -6, 18,-26, 14, -2, 22,-30, 10} } }; const int xmesa_kernel1[16] = { 0*47, 9*47, 4*47, 12*47, /* 47 = (255*3)/16 */ 6*47, 2*47, 14*47, 8*47, 10*47, 1*47, 5*47, 11*47, 7*47, 13*47, 3*47, 15*47 }; static void finish_or_flush( GLcontext *ctx ) { #ifdef XFree86Server /* NOT_NEEDED */ #else const XMesaContext xmesa = XMESA_CONTEXT(ctx); if (xmesa) { _glthread_LOCK_MUTEX(_xmesa_lock); XSync( xmesa->display, False ); _glthread_UNLOCK_MUTEX(_xmesa_lock); } #endif abort(); } /**********************************************************************/ /*** glClear implementations ***/ /**********************************************************************/ /** * Clear the front or back color buffer, if it's implemented with a pixmap. */ static void clear_pixmap(GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height, GLuint value) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); assert(xmbuf); assert(xrb->pixmap); assert(xmesa); assert(xmesa->display); assert(xrb->pixmap); assert(xmbuf->cleargc); XMesaSetForeground( xmesa->display, xmbuf->cleargc, value ); XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc, x, xrb->St.Base.Height - y - height, width, height ); } static void clear_8bit_ximage( GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height, GLuint value ) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); GLint i; for (i = 0; i < height; i++) { GLubyte *ptr = PIXEL_ADDR1(xrb, x, y + i); MEMSET( ptr, xmesa->clearpixel, width ); } } static void clear_HPCR_ximage( GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height, GLuint value ) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); GLint i; for (i = y; i < y + height; i++) { GLubyte *ptr = PIXEL_ADDR1( xrb, x, i ); int j; const GLubyte *sptr = xmesa->xm_visual->hpcr_clear_ximage_pattern[0]; if (i & 1) { sptr += 16; } for (j = x; j < x + width; j++) { *ptr = sptr[j&15]; ptr++; } } } static void clear_16bit_ximage( GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height, GLuint value) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); GLint i, j; if (xmesa->swapbytes) { value = ((value >> 8) & 0x00ff) | ((value << 8) & 0xff00); } for (j = 0; j < height; j++) { GLushort *ptr2 = PIXEL_ADDR2(xrb, x, y + j); for (i = 0; i < width; i++) { ptr2[i] = value; } } } /* Optimized code provided by Nozomi Ytow */ static void clear_24bit_ximage(GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height, GLuint value) { const GLubyte r = (value ) & 0xff; const GLubyte g = (value >> 8) & 0xff; const GLubyte b = (value >> 16) & 0xff; if (r == g && g == b) { /* same value for all three components (gray) */ GLint j; for (j = 0; j < height; j++) { bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j); MEMSET(ptr3, r, 3 * width); } } else { /* non-gray clear color */ GLint i, j; for (j = 0; j < height; j++) { bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j); for (i = 0; i < width; i++) { ptr3->r = r; ptr3->g = g; ptr3->b = b; ptr3++; } } } } static void clear_32bit_ximage(GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height, GLuint value) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); if (!xrb->ximage) return; if (xmesa->swapbytes) { value = ((value >> 24) & 0x000000ff) | ((value >> 8) & 0x0000ff00) | ((value << 8) & 0x00ff0000) | ((value << 24) & 0xff000000); } if (width == xrb->St.Base.Width && height == xrb->St.Base.Height) { /* clearing whole buffer */ const GLuint n = xrb->St.Base.Width * xrb->St.Base.Height; GLuint *ptr4 = (GLuint *) xrb->ximage->data; if (value == 0) { /* common case */ _mesa_memset(ptr4, value, 4 * n); } else { GLuint i; for (i = 0; i < n; i++) ptr4[i] = value; } } else { /* clearing scissored region */ GLint i, j; for (j = 0; j < height; j++) { GLuint *ptr4 = PIXEL_ADDR4(xrb, x, y + j); for (i = 0; i < width; i++) { ptr4[i] = value; } } } } static void clear_nbit_ximage(GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height, GLuint value) { XMesaImage *img = xrb->ximage; GLint i, j; /* TODO: optimize this */ y = YFLIP(xrb, y); for (j = 0; j < height; j++) { for (i = 0; i < width; i++) { XMesaPutPixel(img, x+i, y-j, value); } } } void xmesa_clear_buffers(GLcontext *ctx, GLbitfield buffers, GLuint value) { if (ctx->DrawBuffer->Name == 0) { /* this is a window system framebuffer */ const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask; XMesaBuffer b = XMESA_BUFFER(ctx->DrawBuffer); const GLint x = ctx->DrawBuffer->_Xmin; const GLint y = ctx->DrawBuffer->_Ymin; const GLint width = ctx->DrawBuffer->_Xmax - x; const GLint height = ctx->DrawBuffer->_Ymax - y; /* we can't handle color or index masking */ if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) { if (buffers & BUFFER_BIT_FRONT_LEFT) { /* clear front color buffer */ struct gl_renderbuffer *frontRb = ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer; if (b->frontxrb == xmesa_renderbuffer(frontRb)) { /* renderbuffer is not wrapped - great! */ b->frontxrb->clearFunc(ctx, b->frontxrb, x, y, width, height, value); buffers &= ~BUFFER_BIT_FRONT_LEFT; } else { /* we can't directly clear an alpha-wrapped color buffer */ } } if (buffers & BUFFER_BIT_BACK_LEFT) { /* clear back color buffer */ struct gl_renderbuffer *backRb = ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer; if (b->backxrb == xmesa_renderbuffer(backRb)) { /* renderbuffer is not wrapped - great! */ b->backxrb->clearFunc(ctx, b->backxrb, x, y, width, height, value); buffers &= ~BUFFER_BIT_BACK_LEFT; } } } } } /* * We implement the glEnable function only because we care about * dither enable/disable. */ static void enable( GLcontext *ctx, GLenum pname, GLboolean state ) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); switch (pname) { case GL_DITHER: if (state) xmesa->pixelformat = xmesa->xm_visual->dithered_pf; else xmesa->pixelformat = xmesa->xm_visual->undithered_pf; break; default: ; /* silence compiler warning */ } } static void clear_color_HPCR_ximage( GLcontext *ctx, const GLfloat color[4] ) { int i; const XMesaContext xmesa = XMESA_CONTEXT(ctx); CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]); CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]); CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]); CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]); if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) { /* black is black */ MEMSET( xmesa->xm_visual->hpcr_clear_ximage_pattern, 0x0 , sizeof(xmesa->xm_visual->hpcr_clear_ximage_pattern)); } else { /* build clear pattern */ for (i=0; i<16; i++) { xmesa->xm_visual->hpcr_clear_ximage_pattern[0][i] = DITHER_HPCR(i, 0, xmesa->clearcolor[0], xmesa->clearcolor[1], xmesa->clearcolor[2]); xmesa->xm_visual->hpcr_clear_ximage_pattern[1][i] = DITHER_HPCR(i, 1, xmesa->clearcolor[0], xmesa->clearcolor[1], xmesa->clearcolor[2]); } } } static void clear_color_HPCR_pixmap( GLcontext *ctx, const GLfloat color[4] ) { int i; const XMesaContext xmesa = XMESA_CONTEXT(ctx); CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]); CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]); CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]); CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]); if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) { /* black is black */ for (i=0; i<16; i++) { XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, 0); XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, 0); } } else { for (i=0; i<16; i++) { XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, DITHER_HPCR(i, 0, xmesa->clearcolor[0], xmesa->clearcolor[1], xmesa->clearcolor[2])); XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, DITHER_HPCR(i, 1, xmesa->clearcolor[0], xmesa->clearcolor[1], xmesa->clearcolor[2])); } } /* change tile pixmap content */ XMesaPutImage(xmesa->display, (XMesaDrawable)xmesa->xm_visual->hpcr_clear_pixmap, XMESA_BUFFER(ctx->DrawBuffer)->cleargc, xmesa->xm_visual->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2); } /** * Called when the driver should update its state, based on the new_state * flags. */ void xmesa_update_state( GLcontext *ctx, GLbitfield new_state ) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); st_invalidate_state( ctx, new_state ); if (ctx->DrawBuffer->Name != 0) return; /* * GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect * renderbuffer span/clear funcs. */ if (new_state & (_NEW_COLOR | _NEW_BUFFERS)) { XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); struct xmesa_renderbuffer *front_xrb, *back_xrb; front_xrb = xmbuf->frontxrb; if (front_xrb) { xmesa_set_renderbuffer_funcs(front_xrb, xmesa->pixelformat, xmesa->xm_visual->BitsPerPixel); front_xrb->clearFunc = clear_pixmap; } back_xrb = xmbuf->backxrb; if (back_xrb) { xmesa_set_renderbuffer_funcs(back_xrb, xmesa->pixelformat, xmesa->xm_visual->BitsPerPixel); if (xmbuf->backxrb->pixmap) { back_xrb->clearFunc = clear_pixmap; } else { switch (xmesa->xm_visual->BitsPerPixel) { case 8: if (xmesa->xm_visual->hpcr_clear_flag) { back_xrb->clearFunc = clear_HPCR_ximage; } else { back_xrb->clearFunc = clear_8bit_ximage; } break; case 16: back_xrb->clearFunc = clear_16bit_ximage; break; case 24: back_xrb->clearFunc = clear_24bit_ximage; break; case 32: back_xrb->clearFunc = clear_32bit_ximage; break; default: back_xrb->clearFunc = clear_nbit_ximage; break; } } } } if (xmesa->xm_visual->hpcr_clear_flag) { /* this depends on whether we're drawing to the front or back buffer */ /* XXX FIX THIS! */ #if 0 if (pixmap) { ctx->Driver.ClearColor = clear_color_HPCR_pixmap; } else { ctx->Driver.ClearColor = clear_color_HPCR_ximage; } #else (void) clear_color_HPCR_pixmap; (void) clear_color_HPCR_ximage; #endif } } /** * Called by glViewport. * This is a good time for us to poll the current X window size and adjust * our renderbuffers to match the current window size. * Remember, we have no opportunity to respond to conventional * X Resize/StructureNotify events since the X driver has no event loop. * Thus, we poll. * Note that this trick isn't fool-proof. If the application never calls * glViewport, our notion of the current window size may be incorrect. * That problem led to the GLX_MESA_resize_buffers extension. */ static void xmesa_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h) { XMesaContext xmctx = XMESA_CONTEXT(ctx); XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer); XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer); xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf); xmesa_check_and_update_buffer_size(xmctx, xmreadbuf); (void) x; (void) y; (void) w; (void) h; } /** * Initialize the device driver function table with the functions * we implement in this driver. */ void xmesa_init_driver_functions( XMesaVisual xmvisual, struct dd_function_table *driver ) { driver->UpdateState = xmesa_update_state; driver->GetBufferSize = NULL; /* OBSOLETE */ driver->Flush = finish_or_flush; driver->Finish = finish_or_flush; driver->Enable = enable; #if 0 driver->Clear = xmesa_clear_buffers; #endif driver->Viewport = xmesa_viewport; }