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Exit light calculation early when pixel outside of light bounding rectangle 

This hugely improves the performance of rendering PointLight2Ds
This commit is contained in:
clayjohn 2024-04-19 16:10:11 -07:00
parent 4a0160241f
commit 506e93a207
2 changed files with 12 additions and 8 deletions
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10
drivers/gles3/shaders/canvas.glsl
View File

@ -776,6 +776,12 @@ void main() {
vec2 tex_uv = (vec4(vertex, 0.0, 1.0) * mat4(light_array[light_base].texture_matrix[0], light_array[light_base].texture_matrix[1], vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0))).xy; //multiply inverse given its transposed. Optimizer removes useless operations.
vec2 tex_uv_atlas = tex_uv * light_array[light_base].atlas_rect.zw + light_array[light_base].atlas_rect.xy;
if (any(lessThan(tex_uv, vec2(0.0, 0.0))) || any(greaterThanEqual(tex_uv, vec2(1.0, 1.0)))) {
//if outside the light texture, light color is zero
continue;
}
vec4 light_color = textureLod(atlas_texture, tex_uv_atlas, 0.0);
vec4 light_base_color = light_array[light_base].color;
@ -800,10 +806,6 @@ void main() {
light_color.rgb *= base_color.rgb;
}
#endif
if (any(lessThan(tex_uv, vec2(0.0, 0.0))) || any(greaterThanEqual(tex_uv, vec2(1.0, 1.0)))) {
//if outside the light texture, light color is zero
light_color.a = 0.0;
}
if (bool(light_array[light_base].flags & LIGHT_FLAGS_HAS_SHADOW)) {
vec2 shadow_pos = (vec4(shadow_vertex, 0.0, 1.0) * mat4(light_array[light_base].shadow_matrix[0], light_array[light_base].shadow_matrix[1], vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0))).xy; //multiply inverse given its transposed. Optimizer removes useless operations.

10
servers/rendering/renderer_rd/shaders/canvas.glsl
View File

@ -665,6 +665,12 @@ void main() {
vec2 tex_uv = (vec4(vertex, 0.0, 1.0) * mat4(light_array.data[light_base].texture_matrix[0], light_array.data[light_base].texture_matrix[1], vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0))).xy; //multiply inverse given its transposed. Optimizer removes useless operations.
vec2 tex_uv_atlas = tex_uv * light_array.data[light_base].atlas_rect.zw + light_array.data[light_base].atlas_rect.xy;
if (any(lessThan(tex_uv, vec2(0.0, 0.0))) || any(greaterThanEqual(tex_uv, vec2(1.0, 1.0)))) {
//if outside the light texture, light color is zero
continue;
}
vec4 light_color = textureLod(sampler2D(atlas_texture, texture_sampler), tex_uv_atlas, 0.0);
vec4 light_base_color = light_array.data[light_base].color;
@ -689,10 +695,6 @@ void main() {
light_color.rgb *= base_color.rgb;
}
#endif
if (any(lessThan(tex_uv, vec2(0.0, 0.0))) || any(greaterThanEqual(tex_uv, vec2(1.0, 1.0)))) {
//if outside the light texture, light color is zero
light_color.a = 0.0;
}
if (bool(light_array.data[light_base].flags & LIGHT_FLAGS_HAS_SHADOW)) {
vec2 shadow_pos = (vec4(shadow_vertex, 0.0, 1.0) * mat4(light_array.data[light_base].shadow_matrix[0], light_array.data[light_base].shadow_matrix[1], vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0))).xy; //multiply inverse given its transposed. Optimizer removes useless operations.