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Static analysis fix: division by zero.

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--HG--
extra : histedit_source : 6f8f18284e016f09e4950279524047f97da0294a
This commit is contained in:
Ryan C. Gordon 2014-03-20 11:14:44 -04:00
parent b006893d9c
commit a23e431952
2 changed files with 9 additions and 2 deletions
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7
src/render/opengl/SDL_render_gl.c
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@ -24,6 +24,7 @@
#include "SDL_hints.h"
#include "SDL_log.h"
#include "SDL_assert.h"
#include "SDL_opengl.h"
#include "../SDL_sysrender.h"
#include "SDL_shaders_gl.h"
@ -798,14 +799,16 @@ GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
{
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
const int texturebpp = SDL_BYTESPERPIXEL(texture->format);
SDL_assert(texturebpp != 0); /* otherwise, division by zero later. */
GL_ActivateRenderer(renderer);
renderdata->glEnable(data->type);
renderdata->glBindTexture(data->type, data->texture);
renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH,
(pitch / SDL_BYTESPERPIXEL(texture->format)));
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, (pitch / texturebpp));
renderdata->glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w,
rect->h, data->format, data->formattype,
pixels);