Sweep: Write a PolygonRenderer

[sweep-ai[bot]]

Description

This pull request introduces a new PolygonRenderer class, along with the necessary shaders for rendering polygons. The renderer allows for adding polygons with specified colors and points, and handles the rendering process.

Summary

• Added PolygonRenderer class to manage and render polygons.
• Implemented vertex and fragment shaders (polygon.vert and polygon.frag) for polygon rendering.
• The PolygonRenderer supports adding polygons with a specific color and vertex points.
• Shaders are located under the resources/shaders/ directory.
• The rendering process involves dynamic buffer data handling for efficient rendering of multiple polygons.
• Files added:
  • PolygonRenderer.cpp and PolygonRenderer.h under src/graphics/renderers/ for the renderer implementation.
  • Vertex shader polygon.vert and fragment shader polygon.frag under resources/shaders/ for polygon rendering.

Fixes #5.

---

💡 To get Sweep to edit this pull request, you can:

• Comment below, and Sweep can edit the entire PR
• Comment on a file, Sweep will only modify the commented file
• Edit the original issue to get Sweep to recreate the PR from scratch

This is an automated message generated by Sweep AI.

[sweep-ai[bot]]

Rollback Files For Sweep

• [ ] Rollback changes to resources/shaders/polygon.vert
• [ ] Rollback changes to src/graphics/renderers/PolygonRenderer.cpp
• [ ] Rollback changes to resources/shaders/polygon.frag
• [ ] Rollback changes to src/graphics/renderers/PolygonRenderer.h

This is an automated message generated by Sweep AI.

[sweep-ai[bot]]

Sweep: PR Review

Authors of pull request: @sweep-ai[bot]

This pull request implemented a new polygon rendering system using OpenGL shaders.

A fragment shader (polygon.frag) and a vertex shader (polygon.vert) were created to handle the rendering of polygons. The fragment shader sets the color of the fragments, while the vertex shader processes the vertex positions.

The PolygonRenderer class was introduced in PolygonRenderer.cpp and PolygonRenderer.h. This class manages the shaders, vertex array object (VAO), and vertex buffer object (VBO). It includes methods to add polygons (add_polygon) and render them (render).

The add_polygon method allows polygons to be added by storing their colors and vertex points. The render method binds the VAO and VBO, uploads the vertex data to the GPU, and iterates over the stored colors to draw each polygon using glDrawArrays.

The constructor and destructor of PolygonRenderer handle the initialization and cleanup of OpenGL resources, ensuring proper resource management.

---

Sweep Found These Issues

resources/shaders/polygon.frag

• Sweep has identified a redundant function: The new function is redundant because existing methods in text.frag, rect.frag, circle.frag, and line.frag already handle the assignment of FragColor in a more comprehensive manner.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/resources%2Fshaders%2Fpolygon.frag#L7-L9 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-23f9167c0bad07244e30793d615da07c7841961816b7c7eadf3fb5bca64845a6R7-R9)

resources/shaders/polygon.vert

• Sweep has identified a redundant function: The new function is redundant as its purpose and functionality are already covered by existing methods in text.vert, circle.vert, rect.vert, and line.vert.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/resources%2Fshaders%2Fpolygon.vert#L5-L7 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-a47bb6529da5cba5c458287d87dc2ae6f18112f53ef7cfbd01023dfe45bd39e6R5-R7)

src/graphics/renderers/PolygonRenderer.cpp

• The render method does not check if polygon_points or colors are empty, which could lead to undefined behavior or crashes.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.cpp#L14-L30 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-2290045f5f97dbc1752d465cf0fa53bb6576a20ccc75421efb2921a78f0ee39dR14-R30)
• The render method does not check if polygon_points or colors are empty, which could lead to undefined behavior or crashes.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.cpp#L14-L30 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-2290045f5f97dbc1752d465cf0fa53bb6576a20ccc75421efb2921a78f0ee39dR14-R30)
• Sweep has identified a redundant function: The new function is redundant because the existing PolygonRenderer constructor already initializes the shader, VAO, and VBO. See PolygonRenderer.cpp snippet.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.cpp#L4-L7 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-2290045f5f97dbc1752d465cf0fa53bb6576a20ccc75421efb2921a78f0ee39dR4-R7)
• Sweep has identified a redundant function: The new function PolygonRenderer::add_polygon is redundant because an identical method with the same name and functionality already exists in the PolygonRenderer class.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.cpp#L9-L12 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-2290045f5f97dbc1752d465cf0fa53bb6576a20ccc75421efb2921a78f0ee39dR9-R12)
• Sweep has identified a redundant function: The new function is redundant because its purpose and functionality are already covered by the destructors of other renderer classes like RectRenderer, CircleRenderer, and LineRenderer.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.cpp#L32-L35 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-2290045f5f97dbc1752d465cf0fa53bb6576a20ccc75421efb2921a78f0ee39dR32-R35)

src/graphics/renderers/PolygonRenderer.h

• Sweep has identified a redundant function: The new function PolygonRenderer() is redundant because its purpose and functionality are already covered by the existing PolygonRenderer constructor in PolygonRenderer.cpp.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.h#L9 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-a8c7ab9671b210db7079236eae7c087f0ea65bf6c45f5cd3dd0f88f255a01f3dR9)
• Sweep has identified a redundant function: The new function ~PolygonRenderer() is redundant because the existing destructor PolygonRenderer::~PolygonRenderer() already handles the necessary cleanup operations.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.h#L10 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-a8c7ab9671b210db7079236eae7c087f0ea65bf6c45f5cd3dd0f88f255a01f3dR10)
• Sweep has identified a redundant function: The new function add_polygon is redundant because its functionality is already fully covered by the existing PolygonRenderer::add_polygon method in PolygonRenderer.cpp.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.h#L11 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-a8c7ab9671b210db7079236eae7c087f0ea65bf6c45f5cd3dd0f88f255a01f3dR11)
• Sweep has identified a redundant function: The new void render(); function is redundant because the existing render() methods in LineRenderer, RectRenderer, CircleRenderer, FontRenderer, and trees::Trees already perform the necessary rendering operations.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/src%2Fgraphics%2Frenderers%2FPolygonRenderer.h#L12 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-a8c7ab9671b210db7079236eae7c087f0ea65bf6c45f5cd3dd0f88f255a01f3dR12)

---

Potential Issues

Sweep is unsure if these are issues, but they might be worth checking out.

resources/shaders/polygon.vert

• The shader does not handle the case where the input aPos might be out of the expected range, potentially causing rendering issues.
https://github.com/jonahshader/alife_cuda/blob/f842b09efc0d63e0d9a3e688716a0e4790c16e04/resources%2Fshaders%2Fpolygon.vert#L3-L6 [View Diff](https://github.com/jonahshader/alife_cuda/pull/6/files#diff-a47bb6529da5cba5c458287d87dc2ae6f18112f53ef7cfbd01023dfe45bd39e6R3-R6)

---