/**************************************************************************
*
- * 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 "context.h"
-#include "colormac.h"
+#include "main/context.h"
+#include "main/viewport.h"
#include "st_context.h"
-#include "pipe/p_context.h"
#include "st_atom.h"
-
-
-
-
+#include "pipe/p_context.h"
+#include "cso_cache/cso_context.h"
/**
* Update the viewport transformation matrix. Depends on:
* - depthrange
* - window pos/size or FBO size
*/
-static void update_viewport( struct st_context *st )
+static void
+update_viewport( struct st_context *st )
{
- GLcontext *ctx = st->ctx;
- const GLframebuffer *DrawBuffer = ctx->DrawBuffer;
- GLfloat yScale = 1.0;
- GLfloat yBias = 0.0;
-
+ struct gl_context *ctx = st->ctx;
+ GLfloat yScale, yBias;
+ unsigned i;
/* _NEW_BUFFERS
*/
- if (DrawBuffer) {
-
-#if 0
- if (DrawBuffer->Name) {
- /* User created FBO */
- struct st_renderbuffer *irb
- = st_renderbuffer(DrawBuffer->_ColorDrawBuffers[0][0]);
- if (irb && !irb->RenderToTexture) {
- /* y=0=top */
- yScale = -1.0;
- yBias = irb->Base.Height;
- }
- else {
- /* y=0=bottom */
- yScale = 1.0;
- yBias = 0.0;
- }
- }
- else
- {
- /* window buffer, y=0=top */
- yScale = -1.0;
- yBias = DrawBuffer->Height;
- }
-#endif
+ 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++)
{
- /* _NEW_VIEWPORT
- */
- GLfloat x = ctx->Viewport.X;
- GLfloat y = ctx->Viewport.Y;
- GLfloat z = ctx->Viewport.Near;
- GLfloat half_width = ctx->Viewport.Width / 2.0;
- GLfloat half_height = ctx->Viewport.Height / 2.0;
- GLfloat half_depth = (ctx->Viewport.Far - ctx->Viewport.Near) / 2.0;
-
- struct pipe_viewport_state vp;
-
- vp.scale[0] = half_width;
- vp.scale[1] = half_height * yScale;
- vp.scale[2] = half_depth;
- vp.scale[3] = 1.0;
+ float scale[3], translate[3];
+ _mesa_get_viewport_xform(ctx, i, scale, translate);
- vp.translate[0] = (half_width + x);
- vp.translate[1] = (half_height + y) * yScale + yBias;
- vp.translate[2] = (half_depth + z);
- vp.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];
- if (memcmp(&vp, &st->state.viewport, sizeof(vp)) != 0) {
- st->state.viewport = vp;
- st->pipe->set_viewport_state(st->pipe, &vp);
- }
+ 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]);
}
const struct st_tracked_state st_update_viewport = {
- .dirty = {
- .mesa = _NEW_BUFFERS | _NEW_VIEWPORT,
- .st = 0,
+ "st_update_viewport", /* name */
+ { /* dirty */
+ _NEW_BUFFERS | _NEW_VIEWPORT, /* mesa */
+ 0, /* st */
},
- .update = update_viewport
+ update_viewport /* update */
};