diff options
Diffstat (limited to 'src/compiler/glsl/link_varyings.cpp')
| -rw-r--r-- | src/compiler/glsl/link_varyings.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/compiler/glsl/link_varyings.cpp b/src/compiler/glsl/link_varyings.cpp index 8aefb7e201d..cb0c8baf8aa 100644 --- a/src/compiler/glsl/link_varyings.cpp +++ b/src/compiler/glsl/link_varyings.cpp @@ -872,6 +872,11 @@ store_tfeedback_info(struct gl_context *ctx, struct gl_shader_program *prog, unsigned num_tfeedback_decls, tfeedback_decl *tfeedback_decls, bool has_xfb_qualifiers) { + /* Make sure MaxTransformFeedbackBuffers is less than 32 so the bitmask for + * tracking the number of buffers doesn't overflow. + */ + assert(ctx->Const.MaxTransformFeedbackBuffers < 32); + bool separate_attribs_mode = prog->TransformFeedback.BufferMode == GL_SEPARATE_ATTRIBS; @@ -904,6 +909,7 @@ store_tfeedback_info(struct gl_context *ctx, struct gl_shader_program *prog, num_outputs); unsigned num_buffers = 0; + unsigned buffers = 0; if (!has_xfb_qualifiers && separate_attribs_mode) { /* GL_SEPARATE_ATTRIBS */ @@ -913,6 +919,7 @@ store_tfeedback_info(struct gl_context *ctx, struct gl_shader_program *prog, has_xfb_qualifiers)) return false; + buffers |= 1 << num_buffers; num_buffers++; } } @@ -949,6 +956,7 @@ store_tfeedback_info(struct gl_context *ctx, struct gl_shader_program *prog, } else { buffer = num_buffers; } + buffers |= 1 << num_buffers; if (!tfeedback_decls[i].store(ctx, prog, &prog->LinkedTransformFeedback, @@ -956,12 +964,11 @@ store_tfeedback_info(struct gl_context *ctx, struct gl_shader_program *prog, has_xfb_qualifiers)) return false; } - num_buffers++; } assert(prog->LinkedTransformFeedback.NumOutputs == num_outputs); - prog->LinkedTransformFeedback.NumBuffers = num_buffers; + prog->LinkedTransformFeedback.ActiveBuffers = buffers; return true; } |