mesa: Reject ResumeTransformFeedback if the wrong program is bound.

[mesa.git] / src / mesa / main / shaderapi.c

diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 3f9402c598cb42cb807abcb98f698a63f1051ed9..a2386fb133e105102fc70da5109f766a9fee4e37 100644 (file)
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -742,6 +742,12 @@ compile_shader(struct gl_context *ctx, GLuint shaderObj)
    if (!sh)
       return;
 
+   /* Geometry shaders are not yet fully supported, so issue a warning message
+    * if we're compiling one.
+    */
+   if (sh->Type == GL_GEOMETRY_SHADER)
+      printf("WARNING: Geometry shader support is currently experimental.\n");
+
    options = &ctx->ShaderCompilerOptions[_mesa_shader_type_to_index(sh->Type)];
 
    /* set default pragma state for shader */
@@ -1634,7 +1640,7 @@ _mesa_ProgramParameteri(GLuint program, GLenum pname, GLint value)
       if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_geometry_shader4)
          break;
 
-      if (value < 1 ||
+      if (value < 0 ||
           (unsigned) value > ctx->Const.MaxGeometryOutputVertices) {
          _mesa_error(ctx, GL_INVALID_VALUE,
                      "glProgramParameteri(GL_GEOMETRY_VERTICES_OUT_ARB=%d)",
@@ -1842,3 +1848,34 @@ _mesa_CreateShaderProgramEXT(GLenum type, const GLchar *string)
 
    return program;
 }
+
+
+/**
+ * Copy program-specific data generated by linking from the gl_shader_program
+ * object to a specific gl_program object.
+ */
+void
+_mesa_copy_linked_program_data(gl_shader_type type,
+                               const struct gl_shader_program *src,
+                               struct gl_program *dst)
+{
+   switch (type) {
+   case MESA_SHADER_VERTEX: {
+      struct gl_vertex_program *dst_vp = (struct gl_vertex_program *) dst;
+      dst_vp->UsesClipDistance = src->Vert.UsesClipDistance;
+   }
+      break;
+   case MESA_SHADER_GEOMETRY: {
+      struct gl_geometry_program *dst_gp = (struct gl_geometry_program *) dst;
+      dst_gp->VerticesIn = src->Geom.VerticesIn;
+      dst_gp->VerticesOut = src->Geom.VerticesOut;
+      dst_gp->InputType = src->Geom.InputType;
+      dst_gp->OutputType = src->Geom.OutputType;
+      dst_gp->UsesClipDistance = src->Geom.UsesClipDistance;
+      dst_gp->UsesEndPrimitive = src->Geom.UsesEndPrimitive;
+   }
+      break;
+   default:
+      break;
+   }
+}