/**************************************************************************
*
- * 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 "st_atom.h"
+#include "st_util.h"
#include "pipe/p_context.h"
#include "cso_cache/cso_context.h"
+static enum pipe_viewport_swizzle
+viewport_swizzle_from_glenum(GLenum16 swizzle)
+{
+ return swizzle - GL_VIEWPORT_SWIZZLE_POSITIVE_X_NV;
+}
+
/**
* Update the viewport transformation matrix. Depends on:
* - viewport pos/size
* - depthrange
* - window pos/size or FBO size
*/
-static void
-update_viewport( struct st_context *st )
+void
+st_update_viewport( struct st_context *st )
{
- GLcontext *ctx = st->ctx;
- GLfloat yScale, yBias;
-
- /* _NEW_BUFFERS
- */
- if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
- yScale = -1;
- yBias = ctx->DrawBuffer->Height ;
- }
- else {
- yScale = 1.0;
- yBias = 0.0;
- }
+ struct gl_context *ctx = st->ctx;
+ unsigned 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;
-
- 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;
+ for (i = 0; i < st->state.num_viewports; i++) {
+ float *scale = st->state.viewport[i].scale;
+ float *translate = st->state.viewport[i].translate;
+
+ _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;
+ /* _NEW_BUFFERS */
+ /* Drawing to a window where the coordinate system is upside down. */
+ if (st->state.fb_orientation == Y_0_TOP) {
+ scale[1] *= -1;
+ translate[1] = st->state.fb_height - translate[1];
+ }
- cso_set_viewport(st->cso_context, &st->state.viewport);
+ st->state.viewport[i].swizzle_x = viewport_swizzle_from_glenum(ctx->ViewportArray[i].SwizzleX);
+ st->state.viewport[i].swizzle_y = viewport_swizzle_from_glenum(ctx->ViewportArray[i].SwizzleY);
+ st->state.viewport[i].swizzle_z = viewport_swizzle_from_glenum(ctx->ViewportArray[i].SwizzleZ);
+ st->state.viewport[i].swizzle_w = viewport_swizzle_from_glenum(ctx->ViewportArray[i].SwizzleW);
}
-}
+ cso_set_viewport(st->cso_context, &st->state.viewport[0]);
-const struct st_tracked_state st_update_viewport = {
- "st_update_viewport", /* name */
- { /* dirty */
- _NEW_BUFFERS | _NEW_VIEWPORT, /* mesa */
- 0, /* st */
- },
- update_viewport /* update */
-};
+ if (st->state.num_viewports > 1) {
+ struct pipe_context *pipe = st->pipe;
+
+ pipe->set_viewport_states(pipe, 1, st->state.num_viewports - 1,
+ &st->state.viewport[1]);
+ }
+}