/**************************************************************************
*
- * 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.
#include "main/context.h"
-#include "main/colormac.h"
+#include "main/viewport.h"
#include "st_context.h"
#include "st_atom.h"
#include "pipe/p_context.h"
static void
update_viewport( struct st_context *st )
{
- GLcontext *ctx = st->ctx;
+ struct gl_context *ctx = st->ctx;
GLfloat yScale, yBias;
-
+ unsigned i;
/* _NEW_BUFFERS
*/
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
+ /* Drawing to a window. The corresponding gallium surface uses
+ * Y=0=TOP but OpenGL is Y=0=BOTTOM. So we need to invert the viewport.
+ */
yScale = -1;
yBias = (GLfloat)ctx->DrawBuffer->Height;
}
else {
+ /* Drawing to an FBO where Y=0=BOTTOM, like OpenGL - don't invert */
yScale = 1.0;
yBias = 0.0;
}
/* _NEW_VIEWPORT
*/
+ for (i = 0; i < ctx->Const.MaxViewports; i++)
{
- GLfloat x = (GLfloat)ctx->Viewport.X;
- GLfloat y = (GLfloat)ctx->Viewport.Y;
- GLfloat z = ctx->Viewport.Near;
- GLfloat half_width = (GLfloat)ctx->Viewport.Width / 2.0f;
- GLfloat half_height = (GLfloat)ctx->Viewport.Height / 2.0f;
- GLfloat half_depth = (GLfloat)(ctx->Viewport.Far - ctx->Viewport.Near) / 2.0f;
-
- st->state.viewport.scale[0] = half_width;
- st->state.viewport.scale[1] = half_height * yScale;
- st->state.viewport.scale[2] = half_depth;
- st->state.viewport.scale[3] = 1.0;
+ float scale[3], translate[3];
+ _mesa_get_viewport_xform(ctx, i, scale, translate);
- st->state.viewport.translate[0] = half_width + x;
- st->state.viewport.translate[1] = (half_height + y) * yScale + yBias;
- st->state.viewport.translate[2] = half_depth + z;
- st->state.viewport.translate[3] = 0.0;
+ st->state.viewport[i].scale[0] = scale[0];
+ st->state.viewport[i].scale[1] = scale[1] * yScale;
+ st->state.viewport[i].scale[2] = scale[2];
- cso_set_viewport(st->cso_context, &st->state.viewport);
+ st->state.viewport[i].translate[0] = translate[0];
+ st->state.viewport[i].translate[1] = translate[1] * yScale + yBias;
+ st->state.viewport[i].translate[2] = translate[2];
}
+
+ cso_set_viewport(st->cso_context, &st->state.viewport[0]);
+ if (ctx->Const.MaxViewports > 1)
+ st->pipe->set_viewport_states(st->pipe, 1, ctx->Const.MaxViewports - 1, &st->state.viewport[1]);
}