From 5e0a84f31cac14f1ccc5c74ce2e7cd997f267752 Mon Sep 17 00:00:00 2001
From: Erik Faye-Lund <erik.faye-lund@collabora.com>
Date: Thu, 22 Nov 2018 12:17:32 +0100
Subject: [PATCH] mesa/main: factor out tex-image error-checking

This will be useful when we split error-checking for getteximage and
gettexsubimage later.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Juan A. Suarez <jasuarez@igalia.com>
---
 src/mesa/main/texgetimage.c | 110 ++++++++++++++++++++++++++------------------
 1 file changed, 64 insertions(+), 46 deletions(-)

diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c
index c30ca703242..8ee5cc0d729 100644
--- a/src/mesa/main/texgetimage.c
+++ b/src/mesa/main/texgetimage.c
@@ -1139,53 +1139,15 @@ pbo_error_check(struct gl_context *ctx, GLenum target,
 
 
 /**
- * Do error checking for all (non-compressed) get-texture-image functions.
- * \return true if any error, false if no errors.
+ * Do teximage-related error checking for getting uncompressed images.
+ * \return true if there was an error
  */
 static bool
-getteximage_error_check(struct gl_context *ctx,
-                        struct gl_texture_object *texObj,
-                        GLenum target, GLint level,
-                        GLint xoffset, GLint yoffset, GLint zoffset,
-                        GLsizei width, GLsizei height, GLsizei depth,
-                        GLenum format, GLenum type, GLsizei bufSize,
-                        GLvoid *pixels, const char *caller)
+teximage_error_check(struct gl_context *ctx,
+                     struct gl_texture_image *texImage,
+                     GLenum format, const char *caller)
 {
-   struct gl_texture_image *texImage;
-   GLenum baseFormat, err;
-   GLint maxLevels;
-
-   assert(texObj);
-
-   if (texObj->Target == 0) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid texture)", caller);
-      return true;
-   }
-
-   maxLevels = _mesa_max_texture_levels(ctx, target);
-   if (level < 0 || level >= maxLevels) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "%s(level = %d)", caller, level);
-      return true;
-   }
-
-   err = _mesa_error_check_format_and_type(ctx, format, type);
-   if (err != GL_NO_ERROR) {
-      _mesa_error(ctx, err, "%s(format/type)", caller);
-      return true;
-   }
-
-   if (dimensions_error_check(ctx, texObj, target, level,
-                              xoffset, yoffset, zoffset,
-                              width, height, depth, caller)) {
-      return true;
-   }
-
-   if (pbo_error_check(ctx, target, width, height, depth,
-                       format, type, bufSize, pixels, caller)) {
-      return true;
-   }
-
-   texImage = select_tex_image(texObj, target, level, zoffset);
+   GLenum baseFormat;
    assert(texImage);
 
    /*
@@ -1218,8 +1180,8 @@ getteximage_error_check(struct gl_context *ctx,
       return true;
    }
    else if (_mesa_is_stencil_format(format)
-	    && !_mesa_is_depthstencil_format(baseFormat)
-	    && !_mesa_is_stencil_format(baseFormat)) {
+            && !_mesa_is_depthstencil_format(baseFormat)
+            && !_mesa_is_stencil_format(baseFormat)) {
       _mesa_error(ctx, GL_INVALID_OPERATION,
                   "%s(format mismatch)", caller);
       return true;
@@ -1249,6 +1211,62 @@ getteximage_error_check(struct gl_context *ctx,
 
 
 /**
+ * Do error checking for all (non-compressed) get-texture-image functions.
+ * \return true if any error, false if no errors.
+ */
+static bool
+getteximage_error_check(struct gl_context *ctx,
+                        struct gl_texture_object *texObj,
+                        GLenum target, GLint level,
+                        GLint xoffset, GLint yoffset, GLint zoffset,
+                        GLsizei width, GLsizei height, GLsizei depth,
+                        GLenum format, GLenum type, GLsizei bufSize,
+                        GLvoid *pixels, const char *caller)
+{
+   struct gl_texture_image *texImage;
+   GLenum err;
+   GLint maxLevels;
+
+   assert(texObj);
+
+   if (texObj->Target == 0) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid texture)", caller);
+      return true;
+   }
+
+   maxLevels = _mesa_max_texture_levels(ctx, target);
+   if (level < 0 || level >= maxLevels) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "%s(level = %d)", caller, level);
+      return true;
+   }
+
+   err = _mesa_error_check_format_and_type(ctx, format, type);
+   if (err != GL_NO_ERROR) {
+      _mesa_error(ctx, err, "%s(format/type)", caller);
+      return true;
+   }
+
+   if (dimensions_error_check(ctx, texObj, target, level,
+                              xoffset, yoffset, zoffset,
+                              width, height, depth, caller)) {
+      return true;
+   }
+
+   if (pbo_error_check(ctx, target, width, height, depth,
+                       format, type, bufSize, pixels, caller)) {
+      return true;
+   }
+
+   texImage = select_tex_image(texObj, target, level, zoffset);
+   if (teximage_error_check(ctx, texImage, format, caller)) {
+      return true;
+   }
+
+   return false;
+}
+
+
+/**
  * Return the width, height and depth of a texture image.
  * This function must be resilient to bad parameter values since
  * this is called before full error checking.
-- 
2.11.0