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path: root/mesalib/src/mesa/main/mipmap.c
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Diffstat (limited to 'mesalib/src/mesa/main/mipmap.c')
-rw-r--r--mesalib/src/mesa/main/mipmap.c81
1 files changed, 57 insertions, 24 deletions
diff --git a/mesalib/src/mesa/main/mipmap.c b/mesalib/src/mesa/main/mipmap.c
index 461de9d1b..c621800c0 100644
--- a/mesalib/src/mesa/main/mipmap.c
+++ b/mesalib/src/mesa/main/mipmap.c
@@ -1825,6 +1825,7 @@ generate_mipmap_uncompressed(struct gl_context *ctx, GLenum target,
GLint slice;
GLboolean nextLevel;
GLubyte **srcMaps, **dstMaps;
+ GLboolean success = GL_TRUE;
/* get src image parameters */
srcImage = _mesa_select_tex_image(ctx, texObj, target, level);
@@ -1873,42 +1874,74 @@ generate_mipmap_uncompressed(struct gl_context *ctx, GLenum target,
}
/* Map src texture image slices */
- srcMaps = (GLubyte **) malloc(srcDepth * sizeof(GLubyte *));
- for (slice = 0; slice < srcDepth; slice++) {
- ctx->Driver.MapTextureImage(ctx, srcImage, slice,
- 0, 0, srcWidth, srcHeight,
- GL_MAP_READ_BIT,
- &srcMaps[slice], &srcRowStride);
+ srcMaps = (GLubyte **) calloc(srcDepth, sizeof(GLubyte *));
+ if (srcMaps) {
+ for (slice = 0; slice < srcDepth; slice++) {
+ ctx->Driver.MapTextureImage(ctx, srcImage, slice,
+ 0, 0, srcWidth, srcHeight,
+ GL_MAP_READ_BIT,
+ &srcMaps[slice], &srcRowStride);
+ if (!srcMaps[slice]) {
+ success = GL_FALSE;
+ break;
+ }
+ }
+ }
+ else {
+ success = GL_FALSE;
}
/* Map dst texture image slices */
- dstMaps = (GLubyte **) malloc(dstDepth * sizeof(GLubyte *));
- for (slice = 0; slice < dstDepth; slice++) {
- ctx->Driver.MapTextureImage(ctx, dstImage, slice,
- 0, 0, dstWidth, dstHeight,
- GL_MAP_WRITE_BIT,
- &dstMaps[slice], &dstRowStride);
+ dstMaps = (GLubyte **) calloc(dstDepth, sizeof(GLubyte *));
+ if (dstMaps) {
+ for (slice = 0; slice < dstDepth; slice++) {
+ ctx->Driver.MapTextureImage(ctx, dstImage, slice,
+ 0, 0, dstWidth, dstHeight,
+ GL_MAP_WRITE_BIT,
+ &dstMaps[slice], &dstRowStride);
+ if (!dstMaps[slice]) {
+ success = GL_FALSE;
+ break;
+ }
+ }
+ }
+ else {
+ success = GL_FALSE;
}
- /* generate one mipmap level (for 1D/2D/3D/array/etc texture) */
- _mesa_generate_mipmap_level(target, datatype, comps, border,
- srcWidth, srcHeight, srcDepth,
- (const GLubyte **) srcMaps, srcRowStride,
- dstWidth, dstHeight, dstDepth,
- dstMaps, dstRowStride);
+ if (success) {
+ /* generate one mipmap level (for 1D/2D/3D/array/etc texture) */
+ _mesa_generate_mipmap_level(target, datatype, comps, border,
+ srcWidth, srcHeight, srcDepth,
+ (const GLubyte **) srcMaps, srcRowStride,
+ dstWidth, dstHeight, dstDepth,
+ dstMaps, dstRowStride);
+ }
/* Unmap src image slices */
- for (slice = 0; slice < srcDepth; slice++) {
- ctx->Driver.UnmapTextureImage(ctx, srcImage, slice);
+ if (srcMaps) {
+ for (slice = 0; slice < srcDepth; slice++) {
+ if (srcMaps[slice]) {
+ ctx->Driver.UnmapTextureImage(ctx, srcImage, slice);
+ }
+ }
+ free(srcMaps);
}
- free(srcMaps);
/* Unmap dst image slices */
- for (slice = 0; slice < dstDepth; slice++) {
- ctx->Driver.UnmapTextureImage(ctx, dstImage, slice);
+ if (dstMaps) {
+ for (slice = 0; slice < dstDepth; slice++) {
+ if (dstMaps[slice]) {
+ ctx->Driver.UnmapTextureImage(ctx, dstImage, slice);
+ }
+ }
+ free(dstMaps);
}
- free(dstMaps);
+ if (!success) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "mipmap generation");
+ break;
+ }
} /* loop over mipmap levels */
}