-/**
- * Set the viewport.
- *
- * \param x, y coordinates of the lower-left corner of the viewport rectangle.
- * \param width width of the viewport rectangle.
- * \param height height of the viewport rectangle.
- *
- * \sa Called via glViewport() or display list execution.
- *
- * Flushes the vertices and calls _mesa_set_viewport() with the given
- * parameters.
- */
-void GLAPIENTRY
-_mesa_Viewport( GLint x, GLint y, GLsizei width, GLsizei height )
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
- _mesa_set_viewport(ctx, x, y, width, height);
-}
-
-
-/**
- * Set new viewport parameters and update derived state (the _WindowMap
- * matrix). Usually called from _mesa_Viewport().
- *
- * \param ctx GL context.
- * \param x, y coordinates of the lower left corner of the viewport rectangle.
- * \param width width of the viewport rectangle.
- * \param height height of the viewport rectangle.
- */
-void
-_mesa_set_viewport( GLcontext *ctx, GLint x, GLint y,
- GLsizei width, GLsizei height )
-{
- if (MESA_VERBOSE & VERBOSE_API)
- _mesa_debug(ctx, "glViewport %d %d %d %d\n", x, y, width, height);
-
- if (width < 0 || height < 0) {
- _mesa_error( ctx, GL_INVALID_VALUE,
- "glViewport(%d, %d, %d, %d)", x, y, width, height );
- return;
- }
-
- /* clamp width and height to the implementation dependent range */
- width = CLAMP(width, 1, (GLsizei) ctx->Const.MaxViewportWidth);
- height = CLAMP(height, 1, (GLsizei) ctx->Const.MaxViewportHeight);
-
- ctx->Viewport.X = x;
- ctx->Viewport.Width = width;
- ctx->Viewport.Y = y;
- ctx->Viewport.Height = height;
- ctx->NewState |= _NEW_VIEWPORT;
-
-#if 1
- /* XXX remove this someday. Currently the DRI drivers rely on
- * the WindowMap matrix being up to date in the driver's Viewport
- * and DepthRange functions.
- */
- _math_matrix_viewport(&ctx->Viewport._WindowMap,
- ctx->Viewport.X, ctx->Viewport.Y,
- ctx->Viewport.Width, ctx->Viewport.Height,
- ctx->Viewport.Near, ctx->Viewport.Far,
- ctx->DrawBuffer->_DepthMaxF);
-#endif
-
- if (ctx->Driver.Viewport) {
- /* Many drivers will use this call to check for window size changes
- * and reallocate the z/stencil/accum/etc buffers if needed.
- */
- (*ctx->Driver.Viewport)( ctx, x, y, width, height );
- }
-}
-
-
-#if _HAVE_FULL_GL
-/**
- * Called by glDepthRange
- *
- * \param nearval specifies the Z buffer value which should correspond to
- * the near clip plane
- * \param farval specifies the Z buffer value which should correspond to
- * the far clip plane
- */
-void GLAPIENTRY
-_mesa_DepthRange( GLclampd nearval, GLclampd farval )
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (MESA_VERBOSE&VERBOSE_API)
- _mesa_debug(ctx, "glDepthRange %f %f\n", nearval, farval);
-
- ctx->Viewport.Near = (GLfloat) CLAMP( nearval, 0.0, 1.0 );
- ctx->Viewport.Far = (GLfloat) CLAMP( farval, 0.0, 1.0 );
- ctx->NewState |= _NEW_VIEWPORT;
-
-#if 1
- /* XXX remove this someday. Currently the DRI drivers rely on
- * the WindowMap matrix being up to date in the driver's Viewport
- * and DepthRange functions.
- */
- _math_matrix_viewport(&ctx->Viewport._WindowMap,
- ctx->Viewport.X, ctx->Viewport.Y,
- ctx->Viewport.Width, ctx->Viewport.Height,
- ctx->Viewport.Near, ctx->Viewport.Far,
- ctx->DrawBuffer->_DepthMaxF);
-#endif
-
- if (ctx->Driver.DepthRange) {
- (*ctx->Driver.DepthRange)( ctx, nearval, farval );
- }
-}
-#endif
-