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Merge pull request #3298 from Sonicadvance1/max_texture_buffer_size

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Make sure not to use a GL texture buffer past the max size.
This commit is contained in:
Markus Wick 2015-11-30 10:02:06 +01:00
commit 5eabbd0c1e
1 changed files with 12 additions and 1 deletions
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13
Source/Core/VideoBackends/OGL/TextureCache.cpp
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@ -2,6 +2,7 @@
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <algorithm>
#include <cmath>
#include <fstream>
#include <vector>
@ -293,7 +294,17 @@ TextureCache::TextureCache()
if (g_ActiveConfig.backend_info.bSupportsPaletteConversion)
{
s_palette_stream_buffer = StreamBuffer::Create(GL_TEXTURE_BUFFER, 1024*1024);
s32 buffer_size = 1024 * 1024;
s32 max_buffer_size = 0;
// The minimum MAX_TEXTURE_BUFFER_SIZE that the spec mandates
// is 65KB, we are asking for a 1MB buffer here.
// Make sure to check the maximum size and if it is below 1MB
// then use the maximum the hardware supports instead.
glGetIntegerv(GL_MAX_TEXTURE_BUFFER_SIZE, &max_buffer_size);
buffer_size = std::min(buffer_size, max_buffer_size);
s_palette_stream_buffer = StreamBuffer::Create(GL_TEXTURE_BUFFER, buffer_size);
glGenTextures(1, &s_palette_resolv_texture);
glBindTexture(GL_TEXTURE_BUFFER, s_palette_resolv_texture);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R16UI, s_palette_stream_buffer->m_buffer);