/**************************************************************************
*
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* 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 NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * IN NO EVENT SHALL VMWARE 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>
+ * Keith Whitwell <keithw@vmware.com>
*/
#include "main/macros.h"
+#include "main/framebuffer.h"
#include "st_context.h"
#include "pipe/p_context.h"
#include "st_atom.h"
+#include "st_util.h"
/**
* Scissor depends on the scissor box, and the framebuffer dimensions.
*/
-static void
-update_scissor( struct st_context *st )
+void
+st_update_scissor( struct st_context *st )
{
- struct pipe_scissor_state scissor;
- const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
+ struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
+ const struct gl_context *ctx = st->ctx;
+ const struct gl_framebuffer *fb = ctx->DrawBuffer;
+ const unsigned int fb_width = _mesa_geometric_width(fb);
+ const unsigned int fb_height = _mesa_geometric_height(fb);
GLint miny, maxy;
+ unsigned i;
+ bool changed = false;
- scissor.minx = 0;
- scissor.miny = 0;
- scissor.maxx = fb->Width;
- scissor.maxy = fb->Height;
+ if (!ctx->Scissor.EnableFlags)
+ return;
- if (st->ctx->Scissor.Enabled) {
- /* need to be careful here with xmax or ymax < 0 */
- GLint xmax = MAX2(0, st->ctx->Scissor.X + st->ctx->Scissor.Width);
- GLint ymax = MAX2(0, st->ctx->Scissor.Y + st->ctx->Scissor.Height);
+ for (i = 0 ; i < st->state.num_viewports; i++) {
+ scissor[i].minx = 0;
+ scissor[i].miny = 0;
+ scissor[i].maxx = fb_width;
+ scissor[i].maxy = fb_height;
- if (st->ctx->Scissor.X > (GLint)scissor.minx)
- scissor.minx = st->ctx->Scissor.X;
- if (st->ctx->Scissor.Y > (GLint)scissor.miny)
- scissor.miny = st->ctx->Scissor.Y;
+ if (ctx->Scissor.EnableFlags & (1 << i)) {
+ /* need to be careful here with xmax or ymax < 0 */
+ GLint xmax = MAX2(0, ctx->Scissor.ScissorArray[i].X + ctx->Scissor.ScissorArray[i].Width);
+ GLint ymax = MAX2(0, ctx->Scissor.ScissorArray[i].Y + ctx->Scissor.ScissorArray[i].Height);
- if (xmax < (GLint) scissor.maxx)
- scissor.maxx = xmax;
- if (ymax < (GLint) scissor.maxy)
- scissor.maxy = ymax;
+ if (ctx->Scissor.ScissorArray[i].X > (GLint)scissor[i].minx)
+ scissor[i].minx = ctx->Scissor.ScissorArray[i].X;
+ if (ctx->Scissor.ScissorArray[i].Y > (GLint)scissor[i].miny)
+ scissor[i].miny = ctx->Scissor.ScissorArray[i].Y;
- /* check for null space */
- if (scissor.minx >= scissor.maxx || scissor.miny >= scissor.maxy)
- scissor.minx = scissor.miny = scissor.maxx = scissor.maxy = 0;
+ if (xmax < (GLint) scissor[i].maxx)
+ scissor[i].maxx = xmax;
+ if (ymax < (GLint) scissor[i].maxy)
+ scissor[i].maxy = ymax;
+
+ /* check for null space */
+ if (scissor[i].minx >= scissor[i].maxx || scissor[i].miny >= scissor[i].maxy)
+ scissor[i].minx = scissor[i].miny = scissor[i].maxx = scissor[i].maxy = 0;
+ }
+
+ /* Now invert Y if needed.
+ * Gallium drivers use the convention Y=0=top for surfaces.
+ */
+ if (st->state.fb_orientation == Y_0_TOP) {
+ miny = fb->Height - scissor[i].maxy;
+ maxy = fb->Height - scissor[i].miny;
+ scissor[i].miny = miny;
+ scissor[i].maxy = maxy;
+ }
+
+ if (memcmp(&scissor[i], &st->state.scissor[i], sizeof(scissor[0])) != 0) {
+ /* state has changed */
+ st->state.scissor[i] = scissor[i]; /* struct copy */
+ changed = true;
+ }
}
- /* Now invert Y. Pipe drivers use the convention Y=0=top for surfaces
- */
- miny = fb->Height - scissor.maxy;
- maxy = fb->Height - scissor.miny;
- scissor.miny = miny;
- scissor.maxy = maxy;
+ if (changed) {
+ struct pipe_context *pipe = st->pipe;
- if (memcmp(&scissor, &st->state.scissor, sizeof(scissor)) != 0) {
- /* state has changed */
- st->state.scissor = scissor; /* struct copy */
- st->pipe->set_scissor_state(st->pipe, &scissor); /* activate */
+ pipe->set_scissor_states(pipe, 0, st->state.num_viewports, scissor);
}
}
+void
+st_update_window_rectangles(struct st_context *st)
+{
+ struct pipe_scissor_state new_rects[PIPE_MAX_WINDOW_RECTANGLES];
+ const struct gl_context *ctx = st->ctx;
+ const struct gl_scissor_attrib *scissor = &ctx->Scissor;
+ unsigned i;
+ bool changed = false;
+ unsigned num_rects = scissor->NumWindowRects;
+ bool include = scissor->WindowRectMode == GL_INCLUSIVE_EXT;
-const struct st_tracked_state st_update_scissor = {
- "st_update_scissor", /* name */
- { /* dirty */
- (_NEW_SCISSOR | _NEW_BUFFERS), /* mesa */
- 0, /* st */
- },
- update_scissor /* update */
-};
+ if (ctx->DrawBuffer == ctx->WinSysDrawBuffer) {
+ num_rects = 0;
+ include = false;
+ }
+ for (i = 0; i < num_rects; i++) {
+ const struct gl_scissor_rect *rect = &scissor->WindowRects[i];
+ new_rects[i].minx = MAX2(rect->X, 0);
+ new_rects[i].miny = MAX2(rect->Y, 0);
+ new_rects[i].maxx = MAX2(rect->X + rect->Width, 0);
+ new_rects[i].maxy = MAX2(rect->Y + rect->Height, 0);
+ }
+ if (num_rects > 0 && memcmp(new_rects, st->state.window_rects.rects,
+ num_rects * sizeof(struct pipe_scissor_state))) {
+ memcpy(st->state.window_rects.rects, new_rects,
+ num_rects * sizeof(struct pipe_scissor_state));
+ changed = true;
+ }
+ if (st->state.window_rects.num != num_rects) {
+ st->state.window_rects.num = num_rects;
+ changed = true;
+ }
+ if (st->state.window_rects.include != include) {
+ st->state.window_rects.include = include;
+ changed = true;
+ }
+ if (changed)
+ st->pipe->set_window_rectangles(
+ st->pipe, include, num_rects, new_rects);
+}
projects / mesa.git / blobdiff