From 4fa458d653a0db6ba6421833e1880377c864f755 Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Sun, 24 Jun 2012 09:25:55 +0000
Subject: [PATCH] gpu: disable framebuffer objects on GL ES for now, and
 disable integer attributes if GL version isn't 3.0 at least.

---
 src/gpu/framebuffer.cpp  | 20 +++++++++++++++-----
 src/gpu/vertexbuffer.cpp |  2 ++
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/src/gpu/framebuffer.cpp b/src/gpu/framebuffer.cpp
index 92779780..e335d239 100644
--- a/src/gpu/framebuffer.cpp
+++ b/src/gpu/framebuffer.cpp
@@ -60,7 +60,8 @@ FrameBuffer::FrameBuffer(ivec2 size)
 {
     m_data->m_size = size;
 #if defined USE_D3D9 || defined _XBOX
-#elif !defined __CELLOS_LV2__ && !defined __ANDROID__
+    /* FIXME: not implemented on Direct3D */
+#elif GL_VERSION_1_1
     GLenum format = GL_RGBA8;
     GLenum depth = GL_DEPTH_COMPONENT;
     GLenum wrapmode = GL_REPEAT;
@@ -93,17 +94,21 @@ FrameBuffer::FrameBuffer(ivec2 size)
     glCheckFramebufferStatus(GL_FRAMEBUFFER);
 
     Unbind();
+#else
+    /* FIXME: not implemented on GL ES, see
+     * http://stackoverflow.com/q/4041682/111461 */
 #endif
 }
 
 FrameBuffer::~FrameBuffer()
 {
 #if defined USE_D3D9 || defined _XBOX
-#elif !defined __CELLOS_LV2__ && !defined __ANDROID__
+#elif GL_VERSION_1_1
     glDeleteFramebuffers(1, &m_data->m_fbo);
     glDeleteTextures(1, &m_data->m_texture);
     if (m_data->m_depth != GL_INVALID_INDEX)
         glDeleteRenderbuffers(1, &m_data->m_depth);
+#else
 #endif
     delete m_data;
 }
@@ -111,24 +116,29 @@ FrameBuffer::~FrameBuffer()
 int FrameBuffer::GetTexture() const
 {
 #if defined USE_D3D9 || defined _XBOX
-#elif !defined __CELLOS_LV2__ && !defined __ANDROID__
+    return 0;
+#elif GL_VERSION_1_1
     return m_data->m_texture;
+#else
+    return 0;
 #endif
 }
 
 void FrameBuffer::Bind()
 {
 #if defined USE_D3D9 || defined _XBOX
-#elif !defined __CELLOS_LV2__ && !defined __ANDROID__
+#elif GL_VERSION_1_1
     glBindFramebuffer(GL_FRAMEBUFFER, m_data->m_fbo);
+#else
 #endif
 }
 
 void FrameBuffer::Unbind()
 {
 #if defined USE_D3D9 || defined _XBOX
-#elif !defined __CELLOS_LV2__ && !defined __ANDROID__
+#elif GL_VERSION_1_1
     glBindFramebuffer(GL_FRAMEBUFFER, NULL);
+#else
 #endif
 }
 
diff --git a/src/gpu/vertexbuffer.cpp b/src/gpu/vertexbuffer.cpp
index cf32b6e0..90a8a10b 100644
--- a/src/gpu/vertexbuffer.cpp
+++ b/src/gpu/vertexbuffer.cpp
@@ -385,12 +385,14 @@ void VertexDeclaration::SetStream(VertexBuffer *vb, ShaderAttrib attr1,
                                   tlut[type_index].type, normalize,
                                   stride, (GLvoid const *)(uintptr_t)offset);
         }
+#       if defined GL_VERSION_3_0
         else
         {
             glVertexAttribIPointer((GLint)reg, tlut[type_index].size,
                                    tlut[type_index].type,
                                    stride, (GLvoid const *)(uintptr_t)offset);
         }
+#       endif
 #   else
         switch (usage)
         {