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A spot of refactoring

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This commit is contained in:
Kovid Goyal
2016-10-27 23:08:21 +05:30
parent 6eda70331a
commit c9e3d57ed5
2 changed files with 27 additions and 21 deletions
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43
kitty/develop_gl.py
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@@ -6,7 +6,7 @@ import glfw
import OpenGL.GL as gl import OpenGL.GL as gl
import sys import sys
from kitty.shaders import ShaderProgram, GL_VERSION from kitty.shaders import ShaderProgram, GL_VERSION, Sprites
from kitty.fonts import set_font_family, cell_size from kitty.fonts import set_font_family, cell_size
textured_shaders = ( textured_shaders = (
@@ -52,13 +52,34 @@ def gl_get_unicode(k):
return ans return ans
def calculate_vertices(cell_width, cell_height, screen_width, screen_height):
xnum = screen_width // cell_width
ynum = screen_height // cell_height
vertices = (gl.GLfloat * (xnum * ynum * 12))()
dx, dy = 2 * cell_width / screen_width, 2 * cell_height / screen_height
xmargin = (screen_width - (xnum * cell_width)) / screen_width
ymargin = (screen_height - (ynum * cell_height)) / screen_height
xstart = -1 + xmargin
ystart = 1 - ymargin
vmap = {}
for r in range(ynum):
aoff = r * xnum * 12
top = ystart - r * dy
for c in range(xnum):
left = xstart + c * dx
off = aoff + c * 12
vertices[off:off + 12] = vmap[(r, c)] = rectangle_vertices(left=left, top=top, right=left + dx, bottom=top - dy)
return vertices, xnum, ynum, vmap
class Renderer: class Renderer:
def __init__(self, w, h): def __init__(self, w, h):
self.w, self.h = w, h self.w, self.h = w, h
self.program = ShaderProgram(*textured_shaders) self.program = ShaderProgram(*textured_shaders)
self.sprites = Sprites()
chars = '0123456789' chars = '0123456789'
sprite_vecs = (s[0] for s in self.program.sprites.positions_for(((x, False, False) for x in chars))) sprite_vecs = (s[0] for s in self.sprites.positions_for(((x, False, False) for x in chars)))
self.sprite_map = {i: v for i, v in enumerate(sprite_vecs)} self.sprite_map = {i: v for i, v in enumerate(sprite_vecs)}
self.do_layout() self.do_layout()
@@ -70,24 +91,12 @@ class Renderer:
def do_layout(self): def do_layout(self):
# Divide into cells # Divide into cells
cell_width, cell_height = cell_size() cell_width, cell_height = cell_size()
xnum = self.w // cell_width vertices, xnum, ynum = calculate_vertices(cell_width, cell_height, self.w, self.h)[:3]
ynum = self.h // cell_height
vertices = (gl.GLfloat * (xnum * ynum * 12))()
uv = (gl.GLfloat * (xnum * ynum * 18))() uv = (gl.GLfloat * (xnum * ynum * 18))()
num = 0 num = 0
dx, dy = 2 * cell_width / self.w, 2 * cell_height / self.h
xmargin = (self.w - (xnum * cell_width)) / self.w
ymargin = (self.h - (ynum * cell_height)) / self.h
xstart = -1 + xmargin
ystart = 1 - ymargin
for r in range(ynum): for r in range(ynum):
aoff = r * xnum * 12
uoff = r * xnum * 18 uoff = r * xnum * 18
top = ystart - r * dy
for c in range(xnum): for c in range(xnum):
left = xstart + c * dx
off = aoff + c * 12
vertices[off:off + 12] = rectangle_vertices(left=left, top=top, right=left + dx, bottom=top - dy)
sprite_pos = self.sprite_map[num % 10] sprite_pos = self.sprite_map[num % 10]
off = uoff + c * 18 off = uoff + c * 18
uv[off:off + 18] = rectangle_uv(*sprite_pos) uv[off:off + 18] = rectangle_uv(*sprite_pos)
@@ -98,7 +107,9 @@ class Renderer:
self.num_vertices = len(vertices) // 2 self.num_vertices = len(vertices) // 2
def render(self): def render(self):
with self.program: with self.program, self.sprites:
gl.glUniform1i(self.program.uniform_location('sprites'), self.sprites.sampler_num)
gl.glUniform3f(self.program.uniform_location('sprite_scale'), self.sprites.xnum, self.sprites.ynum, 1)
gl.glDrawArrays(gl.GL_TRIANGLES, 0, self.num_vertices) gl.glDrawArrays(gl.GL_TRIANGLES, 0, self.num_vertices)

5
kitty/shaders.py
View File

@@ -140,7 +140,6 @@ class ShaderProgram:
gl.glDeleteShader(frag_id) gl.glDeleteShader(frag_id)
self.vao_id = gl.glGenVertexArrays(1) self.vao_id = gl.glGenVertexArrays(1)
self.attribute_buffers = {} self.attribute_buffers = {}
self.sprites = Sprites()
def __hash__(self) -> int: def __hash__(self) -> int:
return self.program_id return self.program_id
@@ -179,15 +178,11 @@ class ShaderProgram:
def __enter__(self): def __enter__(self):
gl.glUseProgram(self.program_id) gl.glUseProgram(self.program_id)
gl.glBindVertexArray(self.vao_id) gl.glBindVertexArray(self.vao_id)
gl.glUniform1i(self.uniform_location('sprites'), self.sprites.sampler_num)
gl.glUniform3f(self.uniform_location('sprite_scale'), self.sprites.xnum, self.sprites.ynum, 1)
self.sprites.__enter__()
self.is_active = True self.is_active = True
def __exit__(self, *args): def __exit__(self, *args):
gl.glBindVertexArray(0) gl.glBindVertexArray(0)
gl.glUseProgram(0) gl.glUseProgram(0)
self.sprites.__exit__(*args)
self.is_active = False self.is_active = False
def set_attribute_data(self, attribute_name, data, items_per_attribute_value=2, divisor=None, normalize=False): def set_attribute_data(self, attribute_name, data, items_per_attribute_value=2, divisor=None, normalize=False):