[Mesa-dev] [RFC PATCH 13/56] mesa/main: Allow setting of patch parameters.

[Chris Forbes]

From: Fabian Bieler <fabianbieler at fastmail.fm>

---
 src/mesa/main/shaderapi.c | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index c11ad4f..cfad210 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -1934,13 +1934,39 @@ _mesa_CreateShaderProgramv(GLenum type, GLsizei count,
 extern void GLAPIENTRY
 _mesa_PatchParameteri(GLenum pname, GLint value)
 {
-   /* STUB */
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (pname != GL_PATCH_VERTICES) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glPatchParameteri");
+      return;
+   }
+
+   if (value <= 0 || value > ctx->Const.MaxPatchVertices) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glPatchParameteri");
+      return;
+   }
+
+   ctx->TessCtrlProgram.patch_vertices = value;
 }
 
 
 extern void GLAPIENTRY
 _mesa_PatchParameterfv(GLenum pname, const GLfloat *values)
 {
-   /* STUB */
+   GET_CURRENT_CONTEXT(ctx);
+
+   switch(pname) {
+   case GL_PATCH_DEFAULT_OUTER_LEVEL:
+      memcpy(ctx->TessCtrlProgram.patch_default_outer_level, values,
+             4 * sizeof(GLfloat));
+      return;
+   case GL_PATCH_DEFAULT_INNER_LEVEL:
+      memcpy(ctx->TessCtrlProgram.patch_default_inner_level, values,
+             2 * sizeof(GLfloat));
+      return;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glPatchParameterfv");
+      return;
+   }
 }
 
-- 
2.1.0