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OpenGL: fix crash in revision 95aeedec19 

Real xfb didn't provide any read_stride, so there is a division by zero.

This commit calculates the correct read_stride for real_xfb, so there is also no hack for texture vs xfb needed.
This commit is contained in:
degasus 2013-12-03 00:09:37 +01:00
parent bc01785264
commit edc879ce48
1 changed files with 4 additions and 5 deletions
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9
Source/Core/VideoBackends/OGL/Src/TextureConverter.cpp
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@ -216,7 +216,7 @@ void Shutdown()
void EncodeToRamUsingShader(GLuint srcTexture, const TargetRectangle& sourceRc,
u8* destAddr, int dstWidth, int dstHeight, int readStride,
bool toTexture, bool linearFilter)
bool linearFilter)
{
@ -277,7 +277,7 @@ void EncodeToRamUsingShader(GLuint srcTexture, const TargetRectangle& sourceRc,
int readHeight = readStride / dstWidth / 4; // 4 bytes per pixel
int readLoops = dstHeight / readHeight;
if (writeStride != readStride && readLoops > 1 && toTexture)
if (writeStride != readStride && readLoops > 1)
{
// writing to a texture of a different size
// also copy more then one block line, so the different strides matters
@ -289,7 +289,6 @@ void EncodeToRamUsingShader(GLuint srcTexture, const TargetRectangle& sourceRc,
glReadPixels(0, 0, (GLsizei)dstWidth, (GLsizei)dstHeight, GL_BGRA, GL_UNSIGNED_BYTE, 0);
u8* pbo = (u8*)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, dstSize, GL_MAP_READ_BIT);
//int readStart = 0;
for (int i = 0; i < readLoops; i++)
{
memcpy(destAddr, pbo, readStride);
@ -368,7 +367,7 @@ int EncodeToRamFromTexture(u32 address,GLuint source_texture, bool bFromZBuffer,
TexDecoder_GetBlockWidthInTexels(format);
EncodeToRamUsingShader(source_texture, scaledSource,
dest_ptr, expandedWidth / samples, expandedHeight, readStride,
true, bScaleByHalf > 0 && !bFromZBuffer);
bScaleByHalf > 0 && !bFromZBuffer);
return size_in_bytes; // TODO: D3D11 is calculating this value differently!
}
@ -382,7 +381,7 @@ void EncodeToRamYUYV(GLuint srcTexture, const TargetRectangle& sourceRc, u8* des
// We enable linear filtering, because the gamecube does filtering in the vertical direction when
// yscale is enabled.
// Otherwise we get jaggies when a game uses yscaling (most PAL games)
EncodeToRamUsingShader(srcTexture, sourceRc, destAddr, dstWidth / 2, dstHeight, 0, false, true);
EncodeToRamUsingShader(srcTexture, sourceRc, destAddr, dstWidth / 2, dstHeight, dstWidth*dstHeight*2, true);
FramebufferManager::SetFramebuffer(0);
TextureCache::DisableStage(0);
g_renderer->RestoreAPIState();