main: select ES3.2 version when all extensions are available

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

diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c
index 0a6d00cb013f8e1ac8cb036e5b99a58ca4cb586a..c92f0ccd5a5eaf44facc0d6162fc785fa719c27f 100644 (file)
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -347,23 +347,25 @@ compute_transform_feedback_buffer_sizes(
  * enabled transform feedback buffers without overflowing any of them.
  */
 unsigned
-_mesa_compute_max_transform_feedback_vertices(
+_mesa_compute_max_transform_feedback_vertices(struct gl_context *ctx,
       const struct gl_transform_feedback_object *obj,
       const struct gl_transform_feedback_info *info)
 {
    unsigned max_index = 0xffffffff;
    unsigned i;
 
-   for (i = 0; i < info->NumBuffers; ++i) {
-      unsigned stride = info->BufferStride[i];
-      unsigned max_for_this_buffer;
+   for (i = 0; i < ctx->Const.MaxTransformFeedbackBuffers; i++) {
+      if ((info->ActiveBuffers >> i) & 1) {
+         unsigned stride = info->Buffers[i].Stride;
+         unsigned max_for_this_buffer;
 
-      /* Skip any inactive buffers, which have a stride of 0. */
-      if (stride == 0)
-        continue;
+         /* Skip any inactive buffers, which have a stride of 0. */
+         if (stride == 0)
+           continue;
 
-      max_for_this_buffer = obj->Size[i] / (4 * stride);
-      max_index = MIN2(max_index, max_for_this_buffer);
+         max_for_this_buffer = obj->Size[i] / (4 * stride);
+         max_index = MIN2(max_index, max_for_this_buffer);
+      }
    }
 
    return max_index;
@@ -445,12 +447,14 @@ _mesa_BeginTransformFeedback(GLenum mode)
       return;
    }
 
-   for (i = 0; i < info->NumBuffers; ++i) {
-      if (obj->BufferNames[i] == 0) {
-         _mesa_error(ctx, GL_INVALID_OPERATION,
-                     "glBeginTransformFeedback(binding point %d does not have "
-                     "a buffer object bound)", i);
-         return;
+   for (i = 0; i < ctx->Const.MaxTransformFeedbackBuffers; i++) {
+      if ((info->ActiveBuffers >> i) & 1) {
+         if (obj->BufferNames[i] == 0) {
+            _mesa_error(ctx, GL_INVALID_OPERATION,
+                        "glBeginTransformFeedback(binding point %d does not "
+                        "have a buffer object bound)", i);
+            return;
+         }
       }
    }
 
@@ -470,7 +474,7 @@ _mesa_BeginTransformFeedback(GLenum mode)
        * feedback.
        */
       unsigned max_vertices
-         = _mesa_compute_max_transform_feedback_vertices(obj, info);
+         = _mesa_compute_max_transform_feedback_vertices(ctx, obj, info);
       obj->GlesRemainingPrims = max_vertices / vertices_per_prim;
    }
 
@@ -861,7 +865,7 @@ _mesa_TransformFeedbackVaryings(GLuint program, GLsizei count,
          if (buffers > ctx->Const.MaxTransformFeedbackBuffers) {
             _mesa_error(ctx, GL_INVALID_OPERATION,
                         "glTransformFeedbackVaryings(too many gl_NextBuffer "
-                        "occurences)");
+                        "occurrences)");
             return;
          }
       } else {
@@ -920,7 +924,7 @@ _mesa_GetTransformFeedbackVarying(GLuint program, GLuint index,
                                   GLsizei *size, GLenum *type, GLchar *name)
 {
    const struct gl_shader_program *shProg;
-   const struct gl_transform_feedback_info *linked_xfb_info;
+   struct gl_program_resource *res;
    GET_CURRENT_CONTEXT(ctx);
 
    shProg = _mesa_lookup_shader_program(ctx, program);
@@ -930,22 +934,27 @@ _mesa_GetTransformFeedbackVarying(GLuint program, GLuint index,
       return;
    }
 
-   linked_xfb_info = &shProg->LinkedTransformFeedback;
-   if (index >= (GLuint) linked_xfb_info->NumVarying) {
+   res = _mesa_program_resource_find_index((struct gl_shader_program *) shProg,
+                                           GL_TRANSFORM_FEEDBACK_VARYING,
+                                           index);
+   if (!res) {
       _mesa_error(ctx, GL_INVALID_VALUE,
                   "glGetTransformFeedbackVarying(index=%u)", index);
       return;
    }
 
    /* return the varying's name and length */
-   _mesa_copy_string(name, bufSize, length,
-                    linked_xfb_info->Varyings[index].Name);
+   _mesa_copy_string(name, bufSize, length, _mesa_program_resource_name(res));
 
    /* return the datatype and value's size (in datatype units) */
    if (type)
-      *type = linked_xfb_info->Varyings[index].Type;
+      _mesa_program_resource_prop((struct gl_shader_program *) shProg,
+                                  res, index, GL_TYPE, (GLint*) type,
+                                  "glGetTransformFeedbackVarying");
    if (size)
-      *size = linked_xfb_info->Varyings[index].Size;
+      _mesa_program_resource_prop((struct gl_shader_program *) shProg,
+                                  res, index, GL_ARRAY_SIZE, (GLint*) size,
+                                  "glGetTransformFeedbackVarying");
 }
 
 
@@ -1131,6 +1140,11 @@ _mesa_DeleteTransformFeedbacks(GLsizei n, const GLuint *names)
             }
             _mesa_HashRemove(ctx->TransformFeedback.Objects, names[i]);
             /* unref, but object may not be deleted until later */
+            if (obj == ctx->TransformFeedback.CurrentObject) {
+               reference_transform_feedback_object(
+                     &ctx->TransformFeedback.CurrentObject,
+                     ctx->TransformFeedback.DefaultObject);
+            }
             reference_transform_feedback_object(&obj, NULL);
          }
       }