Fix tests/float_tex.cpp to use unsized texture internal format GL_RGB…

…A instead of sized texture internal format GL_RGBA32F for floating point texture, since GLES2/WebGL1 does not support the sized variants.
dotnet · Dec 11, 2014 · 5c88830 · 5c88830
1 parent 8c863fe
commit 5c88830
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/tests/float_tex.cpp b/tests/float_tex.cpp
@@ -61,7 +61,13 @@ static void updateFloatTexture() {
         ++count;
     }
     glBindTexture(GL_TEXTURE_2D, nodeTexture);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, nbNodes, 1, 0, GL_RGBA, GL_FLOAT, data);
+#ifdef __EMSCRIPTEN__ // In GLES2 and WebGL1, we must use unsized texture internal formats.
+    const GLenum internalFormat = GL_RGBA;
+#else
+    // In desktop GL, we can also use sized internal formats.
+    const GLenum internalFormat = GL_RGBA32F;
+#endif
+    glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, nbNodes, 1, 0, GL_RGBA, GL_FLOAT, data);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
     glBindTexture(GL_TEXTURE_2D, NULL);