88 lines
3.9 KiB
C++
88 lines
3.9 KiB
C++
#pragma once
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#include <charcoal/Batch.h>
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#include <charcoal/Renderable.h>
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#include <charcoal/Poseable.h>
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#include "BuiltinBatch.h"
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namespace charcoal
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{
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namespace builtin
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{
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// Note: If anything is changed in this file, it must also be changed in Poseable2DBatch
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template <typename VertexType, typename IndexType, int orientation_attrib_offset, typename RenderableType = RenderableT<VertexType, IndexType> >
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class PoseableBatch : public builtin::Batch<VertexType, IndexType, 1, RenderableType>
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{
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public:
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PoseableBatch(RenderableType* renderable)
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: builtin::Batch<VertexType, IndexType, 1, RenderableType>(renderable, 0)
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{}
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virtual ~PoseableBatch() {}
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void reset_rendered()
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{
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m_orientation_elements.clear();
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charcoal::InstancedBatch<VertexType, IndexType, RenderableType>::set_render_count(0);
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// Just thinking, maybe want to not make want set_render_count to be public... The end-developer
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// could screw up things by using that function. Then again, it could allow for preventing of
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// needing to resize the element buffers once that optimization is made.
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}
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void add_rendered(const Poseable& poseable)
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{
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m_orientation_elements.emplace_back(poseable.get_orientation_matrix());
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charcoal::InstancedBatch<VertexType, IndexType, RenderableType>::m_render_count++;
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}
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protected:
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void setup_element_buffers() override
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{
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// This is (was) worthless because it is also done in update_element_buffers.
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//glBindBuffer(GL_ARRAY_BUFFER, charcoal::ElementBatch<1>::m_element_buffers[0]);
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//glBufferData(GL_ARRAY_BUFFER, m_orientation_elements.size() * sizeof(mat4), NULL, GL_STREAM_DRAW);
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// TODO: Find a way to not have to do a re-allocation every frame.
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// While we're like this, I guess the adding and resetting of rendered can be changed though!
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}
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void resize_element_buffers() override
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{
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// Do nothing. This is done in update_element_buffers for some reason... Maybe this should be changed...
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}
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void update_element_buffers() override
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{
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// TODO: There are probably better ways to do this. Should check with the old engine to see what I did there.
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glBindBuffer(GL_ARRAY_BUFFER, charcoal::ElementBatch<1>::m_element_buffers[0]);
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glBufferData(GL_ARRAY_BUFFER, m_orientation_elements.size() * sizeof(mat4), NULL, GL_STREAM_DRAW);
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glBufferSubData(GL_ARRAY_BUFFER, 0, m_orientation_elements.size() * sizeof(mat4), m_orientation_elements.data());
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}
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virtual void setup_vao_vertex() = 0;
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void setup_vao() override
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{
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setup_vao_vertex();
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glBindBuffer(GL_ARRAY_BUFFER, charcoal::ElementBatch<1>::m_element_buffers[0]);
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glEnableVertexAttribArray(orientation_attrib_offset + 0);
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glEnableVertexAttribArray(orientation_attrib_offset + 1);
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glEnableVertexAttribArray(orientation_attrib_offset + 2);
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glEnableVertexAttribArray(orientation_attrib_offset + 3);
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glVertexAttribPointer(orientation_attrib_offset + 0, 4, GL_FLOAT, GL_FALSE, sizeof(mat4), (void*)(0 * sizeof(mat4::col_type)));
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glVertexAttribPointer(orientation_attrib_offset + 1, 4, GL_FLOAT, GL_FALSE, sizeof(mat4), (void*)(1 * sizeof(mat4::col_type)));
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glVertexAttribPointer(orientation_attrib_offset + 2, 4, GL_FLOAT, GL_FALSE, sizeof(mat4), (void*)(2 * sizeof(mat4::col_type)));
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glVertexAttribPointer(orientation_attrib_offset + 3, 4, GL_FLOAT, GL_FALSE, sizeof(mat4), (void*)(3 * sizeof(mat4::col_type)));
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glVertexAttribDivisor(orientation_attrib_offset + 0, 1); // Send the orientation data for each instance drawn
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glVertexAttribDivisor(orientation_attrib_offset + 1, 1); // Send the orientation data for each instance drawn
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glVertexAttribDivisor(orientation_attrib_offset + 2, 1); // Send the orientation data for each instance drawn
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glVertexAttribDivisor(orientation_attrib_offset + 3, 1); // Send the orientation data for each instance drawn
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}
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std::vector<mat4> m_orientation_elements;
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};
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}
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} |