[Mesa-dev] [PATCH 7/8] mesa: add viewport() helper
Samuel Pitoiset
samuel.pitoiset at gmail.com
Thu Jun 22 14:36:29 UTC 2017
Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
src/mesa/main/viewport.c | 40 +++++++++++++++++++++++-----------------
1 file changed, 23 insertions(+), 17 deletions(-)
diff --git a/src/mesa/main/viewport.c b/src/mesa/main/viewport.c
index 867c35054b9..254b4aedd8e 100644
--- a/src/mesa/main/viewport.c
+++ b/src/mesa/main/viewport.c
@@ -85,6 +85,28 @@ struct gl_depthrange_inputs {
GLdouble Near, Far; /**< Depth buffer range */
};
+static void
+viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei width,
+ GLsizei height)
+{
+ /* The GL_ARB_viewport_array spec says:
+ *
+ * "Viewport sets the parameters for all viewports to the same values
+ * and is equivalent (assuming no errors are generated) to:
+ *
+ * for (uint i = 0; i < MAX_VIEWPORTS; i++)
+ * ViewportIndexedf(i, 1, (float)x, (float)y, (float)w, (float)h);"
+ *
+ * Set all of the viewports supported by the implementation, but only
+ * signal the driver once at the end.
+ */
+ for (unsigned i = 0; i < ctx->Const.MaxViewports; i++)
+ set_viewport_no_notify(ctx, i, x, y, width, height);
+
+ if (ctx->Driver.Viewport)
+ ctx->Driver.Viewport(ctx);
+}
+
/**
* Set the viewport.
* \sa Called via glViewport() or display list execution.
@@ -95,7 +117,6 @@ struct gl_depthrange_inputs {
void GLAPIENTRY
_mesa_Viewport(GLint x, GLint y, GLsizei width, GLsizei height)
{
- unsigned i;
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE & VERBOSE_API)
@@ -107,22 +128,7 @@ _mesa_Viewport(GLint x, GLint y, GLsizei width, GLsizei height)
return;
}
- /* The GL_ARB_viewport_array spec says:
- *
- * "Viewport sets the parameters for all viewports to the same values
- * and is equivalent (assuming no errors are generated) to:
- *
- * for (uint i = 0; i < MAX_VIEWPORTS; i++)
- * ViewportIndexedf(i, 1, (float)x, (float)y, (float)w, (float)h);"
- *
- * Set all of the viewports supported by the implementation, but only
- * signal the driver once at the end.
- */
- for (i = 0; i < ctx->Const.MaxViewports; i++)
- set_viewport_no_notify(ctx, i, x, y, width, height);
-
- if (ctx->Driver.Viewport)
- ctx->Driver.Viewport(ctx);
+ viewport(ctx, x, y, width, height);
}
--
2.13.1
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