diff options
Diffstat (limited to 'src/mesa/drivers/dri/radeon/common_misc.c')
| -rw-r--r-- | src/mesa/drivers/dri/radeon/common_misc.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/radeon/common_misc.c b/src/mesa/drivers/dri/radeon/common_misc.c new file mode 100644 index 0000000000..3bfb61a084 --- /dev/null +++ b/src/mesa/drivers/dri/radeon/common_misc.c @@ -0,0 +1,187 @@ +/************************************************************************** + +Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved. + +The Weather Channel (TM) funded Tungsten Graphics to develop the +initial release of the Radeon 8500 driver under the XFree86 license. +This notice must be preserved. + +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 (including the +next paragraph) 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 THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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. + +**************************************************************************/ + +/* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "main/glheader.h" +#include "main/imports.h" +#include "main/api_arrayelt.h" +#include "main/enums.h" +#include "main/colormac.h" +#include "main/light.h" +#include "main/framebuffer.h" + +#include "swrast/swrast.h" +#include "vbo/vbo.h" +#include "tnl/tnl.h" +#include "tnl/t_pipeline.h" +#include "swrast_setup/swrast_setup.h" + +#include "dri_util.h" +#include "radeon_drm.h" +#include "radeon_screen.h" +#include "common_context.h" +#include "common_misc.h" +/* ============================================================= + * Scissoring + */ + +static GLboolean intersect_rect(drm_clip_rect_t * out, + drm_clip_rect_t * a, drm_clip_rect_t * b) +{ + *out = *a; + if (b->x1 > out->x1) + out->x1 = b->x1; + if (b->y1 > out->y1) + out->y1 = b->y1; + if (b->x2 < out->x2) + out->x2 = b->x2; + if (b->y2 < out->y2) + out->y2 = b->y2; + if (out->x1 >= out->x2) + return GL_FALSE; + if (out->y1 >= out->y2) + return GL_FALSE; + return GL_TRUE; +} + +void radeonRecalcScissorRects(radeonContextPtr radeon) +{ + drm_clip_rect_t *out; + int i; + + /* Grow cliprect store? + */ + if (radeon->state.scissor.numAllocedClipRects < radeon->numClipRects) { + while (radeon->state.scissor.numAllocedClipRects < + radeon->numClipRects) { + radeon->state.scissor.numAllocedClipRects += 1; /* zero case */ + radeon->state.scissor.numAllocedClipRects *= 2; + } + + if (radeon->state.scissor.pClipRects) + FREE(radeon->state.scissor.pClipRects); + + radeon->state.scissor.pClipRects = + MALLOC(radeon->state.scissor.numAllocedClipRects * + sizeof(drm_clip_rect_t)); + + if (radeon->state.scissor.pClipRects == NULL) { + radeon->state.scissor.numAllocedClipRects = 0; + return; + } + } + + out = radeon->state.scissor.pClipRects; + radeon->state.scissor.numClipRects = 0; + + for (i = 0; i < radeon->numClipRects; i++) { + if (intersect_rect(out, + &radeon->pClipRects[i], + &radeon->state.scissor.rect)) { + radeon->state.scissor.numClipRects++; + out++; + } + } +} + +/** + * Update cliprects and scissors. + */ +void radeonSetCliprects(radeonContextPtr radeon) +{ + __DRIdrawablePrivate *const drawable = radeon->dri.drawable; + __DRIdrawablePrivate *const readable = radeon->dri.readable; + GLframebuffer *const draw_fb = (GLframebuffer*)drawable->driverPrivate; + GLframebuffer *const read_fb = (GLframebuffer*)readable->driverPrivate; + + if (!radeon->radeonScreen->driScreen->dri2.enabled) { + if (draw_fb->_ColorDrawBufferIndexes[0] == BUFFER_BACK_LEFT) { + /* Can't ignore 2d windows if we are page flipping. */ + if (drawable->numBackClipRects == 0 || radeon->doPageFlip || + radeon->sarea->pfCurrentPage == 1) { + radeon->numClipRects = drawable->numClipRects; + radeon->pClipRects = drawable->pClipRects; + } else { + radeon->numClipRects = drawable->numBackClipRects; + radeon->pClipRects = drawable->pBackClipRects; + } + } else { + /* front buffer (or none, or multiple buffers */ + radeon->numClipRects = drawable->numClipRects; + radeon->pClipRects = drawable->pClipRects; + } + } + + if ((draw_fb->Width != drawable->w) || + (draw_fb->Height != drawable->h)) { + _mesa_resize_framebuffer(radeon->glCtx, draw_fb, + drawable->w, drawable->h); + draw_fb->Initialized = GL_TRUE; + } + + if (drawable != readable) { + if ((read_fb->Width != readable->w) || + (read_fb->Height != readable->h)) { + _mesa_resize_framebuffer(radeon->glCtx, read_fb, + readable->w, readable->h); + read_fb->Initialized = GL_TRUE; + } + } + + if (radeon->state.scissor.enabled) + radeonRecalcScissorRects(radeon); + + radeon->lastStamp = drawable->lastStamp; +} + +void radeonUpdateScissor( GLcontext *ctx ) +{ + radeonContextPtr rmesa = RADEON_CONTEXT(ctx); + + if ( rmesa->dri.drawable ) { + __DRIdrawablePrivate *dPriv = rmesa->dri.drawable; + + int x = ctx->Scissor.X; + int y = dPriv->h - ctx->Scissor.Y - ctx->Scissor.Height; + int w = ctx->Scissor.X + ctx->Scissor.Width - 1; + int h = dPriv->h - ctx->Scissor.Y - 1; + + rmesa->state.scissor.rect.x1 = x + dPriv->x; + rmesa->state.scissor.rect.y1 = y + dPriv->y; + rmesa->state.scissor.rect.x2 = w + dPriv->x + 1; + rmesa->state.scissor.rect.y2 = h + dPriv->y + 1; + + radeonRecalcScissorRects( rmesa ); + } +} |