diff options
Diffstat (limited to 'src/mesa/main/bufferobj.c')
| -rw-r--r-- | src/mesa/main/bufferobj.c | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c index 987c5adf101..1e2dbf385e3 100644 --- a/src/mesa/main/bufferobj.c +++ b/src/mesa/main/bufferobj.c @@ -2780,6 +2780,354 @@ bind_atomic_buffer(struct gl_context *ctx, set_atomic_buffer_binding(ctx, binding, bufObj, offset, size); } +static bool +error_check_bind_uniform_buffers(struct gl_context *ctx, + GLuint first, GLsizei count, + const char *caller) +{ + if (!ctx->Extensions.ARB_uniform_buffer_object) { + _mesa_error(ctx, GL_INVALID_ENUM, + "%s(target=GL_UNIFORM_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.MaxUniformBufferBindings) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(first=%u + count=%d > the value of " + "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)", + caller, first, count, + ctx->Const.MaxUniformBufferBindings); + return false; + } + + return true; +} + +/** + * Unbind all uniform buffers in the range + * <first> through <first>+<count>-1 + */ +static void +unbind_uniform_buffers(struct gl_context *ctx, GLuint first, GLsizei count) +{ + struct gl_buffer_object *bufObj = ctx->Shared->NullBufferObj; + GLuint i; + + for (i = 0; i < count; i++) + set_ubo_binding(ctx, &ctx->UniformBufferBindings[first + i], + bufObj, -1, -1, GL_TRUE); +} + +static void +bind_uniform_buffers_base(struct gl_context *ctx, GLuint first, GLsizei count, + const GLuint *buffers) +{ + GLuint i; + + if (!error_check_bind_uniform_buffers(ctx, first, count, "glBindBuffersBase")) + return; + + /* Assume that at least one binding will be changed */ + FLUSH_VERTICES(ctx, 0); + ctx->NewDriverState |= ctx->DriverFlags.NewUniformBuffer; + + 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_uniform_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_uniform_buffer_binding *binding = + &ctx->UniformBufferBindings[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_ubo_binding(ctx, binding, bufObj, -1, -1, GL_TRUE); + else + set_ubo_binding(ctx, binding, bufObj, 0, 0, GL_TRUE); + } + } + + _mesa_end_bufferobj_lookups(ctx); +} + +static bool +error_check_bind_xfb_buffers(struct gl_context *ctx, + struct gl_transform_feedback_object *tfObj, + GLuint first, GLsizei count, const char *caller) +{ + if (!ctx->Extensions.EXT_transform_feedback) { + _mesa_error(ctx, GL_INVALID_ENUM, + "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller); + return false; + } + + /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says: + * + * "An INVALID_OPERATION error is generated : + * + * ... + * • by BindBufferRange or BindBufferBase if target is TRANSFORM_- + * FEEDBACK_BUFFER and transform feedback is currently active." + * + * We assume that this is also meant to apply to BindBuffersRange + * and BindBuffersBase. + */ + if (tfObj->Active) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(Changing transform feedback buffers while " + "transform feedback is active)", 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.MaxTransformFeedbackBuffers) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(first=%u + count=%d > the value of " + "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)", + caller, first, count, + ctx->Const.MaxTransformFeedbackBuffers); + return false; + } + + return true; +} + +/** + * Unbind all transform feedback buffers in the range + * <first> through <first>+<count>-1 + */ +static void +unbind_xfb_buffers(struct gl_context *ctx, + struct gl_transform_feedback_object *tfObj, + GLuint first, GLsizei count) +{ + struct gl_buffer_object * const bufObj = ctx->Shared->NullBufferObj; + GLuint i; + + for (i = 0; i < count; i++) + _mesa_set_transform_feedback_binding(ctx, tfObj, first + i, + bufObj, 0, 0); +} + +static void +bind_xfb_buffers_base(struct gl_context *ctx, + GLuint first, GLsizei count, + const GLuint *buffers) +{ + struct gl_transform_feedback_object *tfObj = + ctx->TransformFeedback.CurrentObject; + GLuint i; + + if (!error_check_bind_xfb_buffers(ctx, tfObj, first, count, + "glBindBuffersBase")) + return; + + /* Assume that at least one binding will be changed */ + FLUSH_VERTICES(ctx, 0); + ctx->NewDriverState |= ctx->DriverFlags.NewTransformFeedback; + + 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_xfb_buffers(ctx, tfObj, 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_buffer_object * const boundBufObj = tfObj->Buffers[first + i]; + struct gl_buffer_object *bufObj; + + if (boundBufObj && boundBufObj->Name == buffers[i]) + bufObj = boundBufObj; + else + bufObj = _mesa_multi_bind_lookup_bufferobj(ctx, buffers, i, + "glBindBuffersBase"); + + if (bufObj) + _mesa_set_transform_feedback_binding(ctx, tfObj, first + i, + bufObj, 0, 0); + } + + _mesa_end_bufferobj_lookups(ctx); +} + +static bool +error_check_bind_atomic_buffers(struct gl_context *ctx, + GLuint first, GLsizei count, + const char *caller) +{ + if (!ctx->Extensions.ARB_shader_atomic_counters) { + _mesa_error(ctx, GL_INVALID_ENUM, + "%s(target=GL_ATOMIC_COUNTER_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.MaxAtomicBufferBindings) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(first=%u + count=%d > the value of " + "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)", + caller, first, count, ctx->Const.MaxAtomicBufferBindings); + return false; + } + + return true; +} + +/** + * Unbind all atomic counter buffers in the range + * <first> through <first>+<count>-1 + */ +static void +unbind_atomic_buffers(struct gl_context *ctx, GLuint first, GLsizei count) +{ + struct gl_buffer_object * const bufObj = ctx->Shared->NullBufferObj; + GLuint i; + + for (i = 0; i < count; i++) + set_atomic_buffer_binding(ctx, &ctx->AtomicBufferBindings[first + i], + bufObj, -1, -1); +} + +static void +bind_atomic_buffers_base(struct gl_context *ctx, + GLuint first, + GLsizei count, + const GLuint *buffers) +{ + GLuint i; + + if (!error_check_bind_atomic_buffers(ctx, first, count, + "glBindBuffersBase")) + return; + + /* Assume that at least one binding will be changed */ + FLUSH_VERTICES(ctx, 0); + ctx->NewDriverState |= ctx->DriverFlags.NewAtomicBuffer; + + 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_atomic_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_atomic_buffer_binding *binding = + &ctx->AtomicBufferBindings[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) + set_atomic_buffer_binding(ctx, binding, bufObj, 0, 0); + } + + _mesa_end_bufferobj_lookups(ctx); +} + void GLAPIENTRY _mesa_BindBufferRange(GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size) @@ -2903,6 +3251,23 @@ void GLAPIENTRY _mesa_BindBuffersBase(GLenum target, GLuint first, GLsizei count, const GLuint *buffers) { + GET_CURRENT_CONTEXT(ctx); + + switch (target) { + case GL_TRANSFORM_FEEDBACK_BUFFER: + bind_xfb_buffers_base(ctx, first, count, buffers); + return; + case GL_UNIFORM_BUFFER: + bind_uniform_buffers_base(ctx, first, count, buffers); + return; + case GL_ATOMIC_COUNTER_BUFFER: + bind_atomic_buffers_base(ctx, first, count, buffers); + return; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glBindBuffersBase(target=%s)", + _mesa_lookup_enum_by_nr(target)); + break; + } } void GLAPIENTRY |