commit 11b038beef4d8473d07edfb60f837667fa43ef12
author He Yunchao <yunchao.he@intel.com> Tue Nov 22 21:24:04 2016 +0800
committer Commit Bot <commit-bot@chromium.org> Fri Jan 13 17:25:47 2017 +0000
tree 1c0fe020017af7ef0e16733461469febabcb1554
parent 7cc14ee868cf7cd2c4e56a6b1499648a4eb835a9

ES31: Implement glGetTexLevelParameter{i|f}v entry point

BUG=angleproject:1679
TEST=dEQP-GLES31.functional.state_query.texture_level.*

Change-Id: I36cc7406199fc0c3c1585ad48f010d7dba5fe9e4
Reviewed-on: https://chromium-review.googlesource.com/414250
Commit-Queue: Yunchao He <yunchao.he@intel.com>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

src/libANGLE/validationES31.cpp

diff --git a/src/libANGLE/validationES31.cpp b/src/libANGLE/validationES31.cpp
index 4cc705d..39ee404 100644
--- a/src/libANGLE/validationES31.cpp
+++ b/src/libANGLE/validationES31.cpp
@@ -13,6 +13,8 @@
 #include "libANGLE/validationES3.h"
 #include "libANGLE/VertexArray.h"
 
+#include "common/utilities.h"
+
 using namespace angle;
 
 namespace gl
@@ -180,4 +182,96 @@
     return true;
 }
 
+bool ValidateGetTexLevelParameterBase(Context *context,
+                                      GLenum target,
+                                      GLint level,
+                                      GLenum pname,
+                                      GLsizei *length)
+{
+    if (context->getClientVersion() < ES_3_1)
+    {
+        context->handleError(Error(GL_INVALID_OPERATION, "Context does not support GLES3.1"));
+        return false;
+    }
+
+    if (length)
+    {
+        *length = 0;
+    }
+
+    if (!ValidTexLevelDestinationTarget(context, target))
+    {
+        context->handleError(Error(GL_INVALID_ENUM, "Invalid texture target"));
+        return false;
+    }
+
+    if (context->getTargetTexture(IsCubeMapTextureTarget(target) ? GL_TEXTURE_CUBE_MAP : target) ==
+        nullptr)
+    {
+        context->handleError(Error(GL_INVALID_ENUM, "No texture bound."));
+        return false;
+    }
+
+    if (!ValidMipLevel(context, target, level))
+    {
+        context->handleError(Error(GL_INVALID_VALUE));
+        return false;
+    }
+
+    switch (pname)
+    {
+        case GL_TEXTURE_RED_TYPE:
+        case GL_TEXTURE_GREEN_TYPE:
+        case GL_TEXTURE_BLUE_TYPE:
+        case GL_TEXTURE_ALPHA_TYPE:
+        case GL_TEXTURE_DEPTH_TYPE:
+            break;
+        case GL_TEXTURE_RED_SIZE:
+        case GL_TEXTURE_GREEN_SIZE:
+        case GL_TEXTURE_BLUE_SIZE:
+        case GL_TEXTURE_ALPHA_SIZE:
+        case GL_TEXTURE_DEPTH_SIZE:
+        case GL_TEXTURE_STENCIL_SIZE:
+        case GL_TEXTURE_SHARED_SIZE:
+            break;
+        case GL_TEXTURE_INTERNAL_FORMAT:
+        case GL_TEXTURE_WIDTH:
+        case GL_TEXTURE_HEIGHT:
+        case GL_TEXTURE_DEPTH:
+            break;
+        case GL_TEXTURE_SAMPLES:
+        case GL_TEXTURE_FIXED_SAMPLE_LOCATIONS:
+            break;
+        case GL_TEXTURE_COMPRESSED:
+            break;
+        default:
+            context->handleError(Error(GL_INVALID_ENUM, "Unknown pname."));
+            return false;
+    }
+
+    if (length)
+    {
+        *length = 1;
+    }
+    return true;
+}
+
+bool ValidateGetTexLevelParameterfv(Context *context,
+                                    GLenum target,
+                                    GLint level,
+                                    GLenum pname,
+                                    GLfloat *params)
+{
+    return ValidateGetTexLevelParameterBase(context, target, level, pname, nullptr);
+}
+
+bool ValidateGetTexLevelParameteriv(Context *context,
+                                    GLenum target,
+                                    GLint level,
+                                    GLenum pname,
+                                    GLint *params)
+{
+    return ValidateGetTexLevelParameterBase(context, target, level, pname, nullptr);
+}
+
 }  // namespace gl