From ARB_viewport_array spec:
" * On GL3-capable hardware the VIEWPORT_BOUNDS_RANGE should be at least
[-16384, 16383].
* On GL4-capable hardware the VIEWPORT_BOUNDS_RANGE should be at least
[-32768, 32767]."
Signed-off-by: Samuel Iglesias Gonsálvez <sigles...@igalia.com>
---
src/mesa/drivers/dri/i965/brw_context.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_context.c
b/src/mesa/drivers/dri/i965/brw_context.c
index 31b6b2a..1569992 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -687,10 +687,15 @@ brw_initialize_context_constants(struct brw_context *brw)
ctx->Const.MaxViewports = GEN6_NUM_VIEWPORTS;
ctx->Const.ViewportSubpixelBits = 0;
- /* Cast to float before negating because MaxViewportWidth is unsigned.
- */
- ctx->Const.ViewportBounds.Min = -(float)ctx->Const.MaxViewportWidth;
- ctx->Const.ViewportBounds.Max = ctx->Const.MaxViewportWidth;
+ if (brw->intelScreen->driScrnPriv->max_gl_core_version >= 40) {
+ ctx->Const.ViewportBounds.Min = -32768;
+ ctx->Const.ViewportBounds.Max = 32767;
+ } else {
+ /* Cast to float before negating because MaxViewportWidth is unsigned.
+ */
+ ctx->Const.ViewportBounds.Min = -(float)ctx->Const.MaxViewportWidth;
+ ctx->Const.ViewportBounds.Max = ctx->Const.MaxViewportWidth;
+ }
}
/* ARB_gpu_shader5 */
--
2.7.0
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