return &ctx->UniformBuffer;
}
break;
+ case GL_SHADER_STORAGE_BUFFER:
+ if (ctx->Extensions.ARB_shader_storage_buffer_object) {
+ return &ctx->ShaderStorageBuffer;
+ }
+ break;
case GL_ATOMIC_COUNTER_BUFFER:
if (ctx->Extensions.ARB_shader_atomic_counters) {
return &ctx->AtomicBuffer;
_mesa_reference_buffer_object(ctx, &ctx->UniformBuffer,
ctx->Shared->NullBufferObj);
+ _mesa_reference_buffer_object(ctx, &ctx->ShaderStorageBuffer,
+ ctx->Shared->NullBufferObj);
+
_mesa_reference_buffer_object(ctx, &ctx->AtomicBuffer,
ctx->Shared->NullBufferObj);
ctx->UniformBufferBindings[i].Size = -1;
}
+ for (i = 0; i < MAX_COMBINED_SHADER_STORAGE_BUFFERS; i++) {
+ _mesa_reference_buffer_object(ctx,
+ &ctx->ShaderStorageBufferBindings[i].BufferObject,
+ ctx->Shared->NullBufferObj);
+ ctx->ShaderStorageBufferBindings[i].Offset = -1;
+ ctx->ShaderStorageBufferBindings[i].Size = -1;
+ }
+
for (i = 0; i < MAX_COMBINED_ATOMIC_BUFFERS; i++) {
_mesa_reference_buffer_object(ctx,
&ctx->AtomicBufferBindings[i].BufferObject,
_mesa_reference_buffer_object(ctx, &ctx->UniformBuffer, NULL);
+ _mesa_reference_buffer_object(ctx, &ctx->ShaderStorageBuffer, NULL);
+
_mesa_reference_buffer_object(ctx, &ctx->AtomicBuffer, NULL);
_mesa_reference_buffer_object(ctx, &ctx->DrawIndirectBuffer, NULL);
NULL);
}
+ for (i = 0; i < MAX_COMBINED_SHADER_STORAGE_BUFFERS; i++) {
+ _mesa_reference_buffer_object(ctx,
+ &ctx->ShaderStorageBufferBindings[i].BufferObject,
+ NULL);
+ }
+
for (i = 0; i < MAX_COMBINED_ATOMIC_BUFFERS; i++) {
_mesa_reference_buffer_object(ctx,
&ctx->AtomicBufferBindings[i].BufferObject,
_mesa_BindBuffer( GL_UNIFORM_BUFFER, 0 );
}
+ /* unbind SSBO binding points */
+ for (j = 0; j < ctx->Const.MaxShaderStorageBufferBindings; j++) {
+ if (ctx->ShaderStorageBufferBindings[j].BufferObject == bufObj) {
+ _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER, j, 0);
+ }
+ }
+
+ if (ctx->ShaderStorageBuffer == bufObj) {
+ _mesa_BindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
+ }
+
/* unbind Atomci Buffer binding points */
for (j = 0; j < ctx->Const.MaxAtomicBufferBindings; j++) {
if (ctx->AtomicBufferBindings[j].BufferObject == bufObj) {
buf = ctx->Driver.NewBufferObject(ctx, buffers[i]);
if (!buf) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s", func);
+ mtx_unlock(&ctx->Shared->Mutex);
return;
}
}
bufObj->UsageHistory |= USAGE_UNIFORM_BUFFER;
}
+/**
+ * Binds a buffer object to a shader storage buffer binding point.
+ *
+ * The caller is responsible for flushing vertices and updating
+ * NewDriverState.
+ */
+static void
+set_ssbo_binding(struct gl_context *ctx,
+ struct gl_shader_storage_buffer_binding *binding,
+ struct gl_buffer_object *bufObj,
+ GLintptr offset,
+ GLsizeiptr size,
+ GLboolean autoSize)
+{
+ _mesa_reference_buffer_object(ctx, &binding->BufferObject, bufObj);
+
+ binding->Offset = offset;
+ binding->Size = size;
+ binding->AutomaticSize = autoSize;
+
+ /* If this is a real buffer object, mark it has having been used
+ * at some point as a SSBO.
+ */
+ if (size >= 0)
+ bufObj->UsageHistory |= USAGE_SHADER_STORAGE_BUFFER;
+}
+
/**
* Binds a buffer object to a uniform buffer binding point.
*
return true;
}
+static bool
+error_check_bind_shader_storage_buffers(struct gl_context *ctx,
+ GLuint first, GLsizei count,
+ const char *caller)
+{
+ if (!ctx->Extensions.ARB_shader_storage_buffer_object) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "%s(target=GL_SHADER_STORAGE_BUFFER)", caller);
+ return false;
+ }
+
+ /* The ARB_multi_bind_spec says:
+ *
+ * "An INVALID_OPERATION error is generated if <first> + <count> is
+ * greater than the number of target-specific indexed binding points,
+ * as described in section 6.7.1."
+ */
+ if (first + count > ctx->Const.MaxShaderStorageBufferBindings) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "%s(first=%u + count=%d > the value of "
+ "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
+ caller, first, count,
+ ctx->Const.MaxShaderStorageBufferBindings);
+ return false;
+ }
+
+ return true;
+}
+
/**
* Unbind all uniform buffers in the range
* <first> through <first>+<count>-1
bufObj, -1, -1, GL_TRUE);
}
+/**
+ * Unbind all shader storage buffers in the range
+ * <first> through <first>+<count>-1
+ */
+static void
+unbind_shader_storage_buffers(struct gl_context *ctx, GLuint first,
+ GLsizei count)
+{
+ struct gl_buffer_object *bufObj = ctx->Shared->NullBufferObj;
+ GLint i;
+
+ for (i = 0; i < count; i++)
+ set_ssbo_binding(ctx, &ctx->ShaderStorageBufferBindings[first + i],
+ bufObj, -1, -1, GL_TRUE);
+}
+
static void
bind_uniform_buffers_base(struct gl_context *ctx, GLuint first, GLsizei count,
const GLuint *buffers)
_mesa_end_bufferobj_lookups(ctx);
}
+static void
+bind_shader_storage_buffers_base(struct gl_context *ctx, GLuint first,
+ GLsizei count, const GLuint *buffers)
+{
+ GLint i;
+
+ if (!error_check_bind_shader_storage_buffers(ctx, first, count,
+ "glBindBuffersBase"))
+ 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."
+ */
+ 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 (binding->BufferObject && binding->BufferObject->Name == buffers[i])
+ bufObj = binding->BufferObject;
+ else
+ bufObj = _mesa_multi_bind_lookup_bufferobj(ctx, buffers, i,
+ "glBindBuffersBase");
+
+ if (bufObj) {
+ if (bufObj == ctx->Shared->NullBufferObj)
+ set_ssbo_binding(ctx, binding, bufObj, -1, -1, GL_TRUE);
+ else
+ set_ssbo_binding(ctx, binding, bufObj, 0, 0, GL_TRUE);
+ }
+ }
+
+ _mesa_end_bufferobj_lookups(ctx);
+}
+
static void
bind_uniform_buffers_range(struct gl_context *ctx, GLuint first, GLsizei count,
const GLuint *buffers,
_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,
switch (target) {
case GL_TRANSFORM_FEEDBACK_BUFFER:
- _mesa_bind_buffer_range_transform_feedback(ctx, index, bufObj,
- offset, size);
+ _mesa_bind_buffer_range_transform_feedback(ctx,
+ ctx->TransformFeedback.CurrentObject,
+ index, bufObj, offset, size,
+ false);
return;
case GL_UNIFORM_BUFFER:
bind_buffer_range_uniform_buffer(ctx, index, bufObj, offset, size);
switch (target) {
case GL_TRANSFORM_FEEDBACK_BUFFER:
- _mesa_bind_buffer_base_transform_feedback(ctx, index, bufObj);
+ _mesa_bind_buffer_base_transform_feedback(ctx,
+ ctx->TransformFeedback.CurrentObject,
+ index, bufObj, false);
return;
case GL_UNIFORM_BUFFER:
bind_buffer_base_uniform_buffer(ctx, index, bufObj);
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);
case GL_UNIFORM_BUFFER:
bind_uniform_buffers_base(ctx, first, count, buffers);
return;
+ case GL_SHADER_STORAGE_BUFFER:
+ bind_shader_storage_buffers_base(ctx, first, count, buffers);
+ return;
case GL_ATOMIC_COUNTER_BUFFER:
bind_atomic_buffers_base(ctx, first, count, buffers);
return;
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