Julian Eisel
c81bc09876
Previously this was using `GPU_SHADER_TEXT` as default value indicating an "unset" state. This wasn't documented in the definition (and so D16284 added a new enumerator that broke this). Plus code was assuming this enumerator would always have the value 0 without specifying this in the definition either. In this case it's easy to not rely on the enum value at all, and just use `std::optional` to add a "unset" state. Differential Revision: https://developer.blender.org/D16303
65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2016 by Mike Erwin. All rights reserved. */
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/** \file
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* \ingroup gpu
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*
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* Mimics old style opengl immediate mode drawing.
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*/
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#pragma once
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#include <optional>
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#include "GPU_batch.h"
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#include "GPU_primitive.h"
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#include "GPU_shader.h"
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#include "GPU_vertex_format.h"
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namespace blender::gpu {
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class Immediate {
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public:
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/** Pointer to the mapped buffer data for the current vertex. */
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uchar *vertex_data = nullptr;
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/** Current vertex index. */
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uint vertex_idx = 0;
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/** Length of the buffer in vertices. */
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uint vertex_len = 0;
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/** Which attributes of current vertex have not been given values? */
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uint16_t unassigned_attr_bits = 0;
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/** Attributes that needs to be set. One bit per attribute. */
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uint16_t enabled_attr_bits = 0;
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/** Current draw call specification. */
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GPUPrimType prim_type = GPU_PRIM_NONE;
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GPUVertFormat vertex_format = {};
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GPUShader *shader = nullptr;
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/** Enforce strict vertex count (disabled when using #immBeginAtMost). */
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bool strict_vertex_len = true;
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/** Batch in construction when using #immBeginBatch. */
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GPUBatch *batch = nullptr;
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/** Wide Line workaround. */
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/** Previously bound shader to restore after drawing. */
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std::optional<eGPUBuiltinShader> prev_builtin_shader;
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/** Builtin shader index. Used to test if the line width workaround can be done. */
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std::optional<eGPUBuiltinShader> builtin_shader_bound;
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/** Uniform color: Kept here to update the wide-line shader just before #immBegin. */
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float uniform_color[4];
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public:
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Immediate(){};
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virtual ~Immediate(){};
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virtual uchar *begin() = 0;
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virtual void end() = 0;
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};
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} // namespace blender::gpu
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void immActivate();
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void immDeactivate();
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