diff options
Diffstat (limited to 'src/mesa/main/bufferobj.c')
| -rw-r--r-- | src/mesa/main/bufferobj.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c index 27638caf9fc..0a9ffe41043 100644 --- a/src/mesa/main/bufferobj.c +++ b/src/mesa/main/bufferobj.c @@ -3579,6 +3579,112 @@ bind_uniform_buffers_range(struct gl_context *ctx, GLuint first, GLsizei count, _mesa_end_bufferobj_lookups(ctx); } +static void +bind_shader_storage_buffers_range(struct gl_context *ctx, GLuint first, + GLsizei count, const GLuint *buffers, + const GLintptr *offsets, + const GLsizeiptr *sizes) +{ + GLint i; + + if (!error_check_bind_shader_storage_buffers(ctx, first, count, + "glBindBuffersRange")) + return; + + /* Assume that at least one binding will be changed */ + FLUSH_VERTICES(ctx, 0); + ctx->NewDriverState |= ctx->DriverFlags.NewShaderStorageBuffer; + + if (!buffers) { + /* The ARB_multi_bind spec says: + * + * "If <buffers> is NULL, all bindings from <first> through + * <first>+<count>-1 are reset to their unbound (zero) state. + * In this case, the offsets and sizes associated with the + * binding points are set to default values, ignoring + * <offsets> and <sizes>." + */ + unbind_shader_storage_buffers(ctx, first, count); + return; + } + + /* Note that the error semantics for multi-bind commands differ from + * those of other GL commands. + * + * The Issues section in the ARB_multi_bind spec says: + * + * "(11) Typically, OpenGL specifies that if an error is generated by a + * command, that command has no effect. This is somewhat + * unfortunate for multi-bind commands, because it would require a + * first pass to scan the entire list of bound objects for errors + * and then a second pass to actually perform the bindings. + * Should we have different error semantics? + * + * RESOLVED: Yes. In this specification, when the parameters for + * one of the <count> binding points are invalid, that binding point + * is not updated and an error will be generated. However, other + * binding points in the same command will be updated if their + * parameters are valid and no other error occurs." + */ + + _mesa_begin_bufferobj_lookups(ctx); + + for (i = 0; i < count; i++) { + struct gl_shader_storage_buffer_binding *binding = + &ctx->ShaderStorageBufferBindings[first + i]; + struct gl_buffer_object *bufObj; + + if (!bind_buffers_check_offset_and_size(ctx, i, offsets, sizes)) + continue; + + /* The ARB_multi_bind spec says: + * + * "An INVALID_VALUE error is generated by BindBuffersRange if any + * pair of values in <offsets> and <sizes> does not respectively + * satisfy the constraints described for those parameters for the + * specified target, as described in section 6.7.1 (per binding)." + * + * Section 6.7.1 refers to table 6.5, which says: + * + * "┌───────────────────────────────────────────────────────────────┐ + * │ Shader storage buffer array bindings (see sec. 7.8) │ + * ├─────────────────────┬─────────────────────────────────────────┤ + * │ ... │ ... │ + * │ offset restriction │ multiple of value of SHADER_STORAGE_- │ + * │ │ BUFFER_OFFSET_ALIGNMENT │ + * │ ... │ ... │ + * │ size restriction │ none │ + * └─────────────────────┴─────────────────────────────────────────┘" + */ + if (offsets[i] & (ctx->Const.ShaderStorageBufferOffsetAlignment - 1)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glBindBuffersRange(offsets[%u]=%" PRId64 + " is misaligned; it must be a multiple of the value of " + "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when " + "target=GL_SHADER_STORAGE_BUFFER)", + i, (int64_t) offsets[i], + ctx->Const.ShaderStorageBufferOffsetAlignment); + continue; + } + + if (binding->BufferObject && binding->BufferObject->Name == buffers[i]) + bufObj = binding->BufferObject; + else + bufObj = _mesa_multi_bind_lookup_bufferobj(ctx, buffers, i, + "glBindBuffersRange"); + + if (bufObj) { + if (bufObj == ctx->Shared->NullBufferObj) + set_ssbo_binding(ctx, binding, bufObj, -1, -1, GL_FALSE); + else + set_ssbo_binding(ctx, binding, bufObj, + offsets[i], sizes[i], GL_FALSE); + } + } + + _mesa_end_bufferobj_lookups(ctx); +} + static bool error_check_bind_xfb_buffers(struct gl_context *ctx, struct gl_transform_feedback_object *tfObj, @@ -4158,6 +4264,10 @@ _mesa_BindBuffersRange(GLenum target, GLuint first, GLsizei count, case GL_UNIFORM_BUFFER: bind_uniform_buffers_range(ctx, first, count, buffers, offsets, sizes); return; + case GL_SHADER_STORAGE_BUFFER: + bind_shader_storage_buffers_range(ctx, first, count, buffers, offsets, + sizes); + return; case GL_ATOMIC_COUNTER_BUFFER: bind_atomic_buffers_range(ctx, first, count, buffers, offsets, sizes); |