| /************************************************************************** |
| * |
| * Copyright 2007 VMware, Inc. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * 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 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/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 |
| */ |
| void |
| st_update_viewport( struct st_context *st ) |
| { |
| struct gl_context *ctx = st->ctx; |
| unsigned i; |
| |
| /* _NEW_VIEWPORT |
| */ |
| 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); |
| |
| /* _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]; |
| } |
| |
| 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]); |
| |
| 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]); |
| } |
| } |