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Cache shader attribute locations in TileRenderable

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This commit is contained in:
Jared Miller 2026-02-12 21:08:00 -05:00
parent 4f8b009a71
commit 8c4def54af
Signed by: shmup
GPG key ID: 22B5C6D66A38B06C
1 changed files with 15 additions and 11 deletions
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26
playscii/renderable.py
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@ -92,6 +92,11 @@ class TileRenderable:
self.alpha_uniform = self.shader.get_uniform_location("alpha")
self.brightness_uniform = self.shader.get_uniform_location("brightness")
self.bg_alpha_uniform = self.shader.get_uniform_location("bgColorAlpha")
self.attrib_vert_position = self.shader.get_attrib_location("vertPosition")
self.attrib_char_index = self.shader.get_attrib_location("charIndex")
self.attrib_uv_mod = self.shader.get_attrib_location("uvMod")
self.attrib_fg_color_index = self.shader.get_attrib_location("fgColorIndex")
self.attrib_bg_color_index = self.shader.get_attrib_location("bgColorIndex")
self.create_buffers()
# finish
if self.app.use_vao:
@ -485,39 +490,38 @@ class TileRenderable:
if self.app.use_vao:
GL.glBindVertexArray(self.vao)
else:
attrib = self.shader.get_attrib_location # for brevity
vp = ctypes.c_void_p(0)
# bind each buffer and set its attrib:
# verts
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vert_buffer)
GL.glVertexAttribPointer(
attrib("vertPosition"), VERT_LENGTH, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
self.attrib_vert_position, VERT_LENGTH, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
)
GL.glEnableVertexAttribArray(attrib("vertPosition"))
GL.glEnableVertexAttribArray(self.attrib_vert_position)
# chars
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.char_buffer)
GL.glVertexAttribPointer(
attrib("charIndex"), 1, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
self.attrib_char_index, 1, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
)
GL.glEnableVertexAttribArray(attrib("charIndex"))
GL.glEnableVertexAttribArray(self.attrib_char_index)
# uvs
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.uv_buffer)
GL.glVertexAttribPointer(
attrib("uvMod"), 2, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
self.attrib_uv_mod, 2, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
)
GL.glEnableVertexAttribArray(attrib("uvMod"))
GL.glEnableVertexAttribArray(self.attrib_uv_mod)
# fg colors
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.fg_buffer)
GL.glVertexAttribPointer(
attrib("fgColorIndex"), 1, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
self.attrib_fg_color_index, 1, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
)
GL.glEnableVertexAttribArray(attrib("fgColorIndex"))
GL.glEnableVertexAttribArray(self.attrib_fg_color_index)
# bg colors
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.bg_buffer)
GL.glVertexAttribPointer(
attrib("bgColorIndex"), 1, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
self.attrib_bg_color_index, 1, GL.GL_FLOAT, GL.GL_FALSE, 0, vp
)
GL.glEnableVertexAttribArray(attrib("bgColorIndex"))
GL.glEnableVertexAttribArray(self.attrib_bg_color_index)
# finally, bind element buffer
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, self.elem_buffer)
GL.glEnable(GL.GL_BLEND)