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tests: add a few more shader uniform tests

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This commit is contained in:
Sasha Szpakowski
2024-03-05 21:01:05 -04:00
parent 01fbedb225
commit 026e9f164a
1 changed files with 49 additions and 8 deletions
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testing/tests/graphics.lua
+49 -8
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@@ -804,7 +804,7 @@ love.test.graphics.Shader = function(test)
-- check valid shader
local pixelcode1 = [[
extern Image tex2;
uniform Image tex2;
vec4 effect(vec4 color, Image tex, vec2 texture_coords, vec2 screen_coords) {
vec4 texturecolor = Texel(tex2, texture_coords);
return texturecolor * color;
@@ -824,7 +824,7 @@ love.test.graphics.Shader = function(test)
-- check invalid shader
local pixelcode2 = [[
extern float ww;
uniform float ww;
vec4 effect(vec4 color, Image tex, vec2 texture_coords, vec2 screen_coords) {
vec4 texturecolor = Texel(tex, texture_coords);
float unused = ww * 3 * color;
@@ -837,8 +837,8 @@ love.test.graphics.Shader = function(test)
-- check using a shader to draw + sending uniforms
-- shader will return a given color if overwrite set to 1, otherwise def. draw
local pixelcode3 = [[
extern vec4 col;
extern float overwrite;
uniform vec4 col;
uniform float overwrite;
vec4 effect(vec4 color, Image tex, vec2 texture_coords, vec2 screen_coords) {
vec4 texcol = Texel(tex, texture_coords);
if (overwrite == 1.0) {
@@ -850,7 +850,8 @@ love.test.graphics.Shader = function(test)
]]
local shader3 = love.graphics.newShader(pixelcode3, vertexcode1)
local canvas = love.graphics.newCanvas(16, 16)
love.graphics.setCanvas(canvas)
love.graphics.push("all")
love.graphics.setCanvas(canvas)
-- set color to yellow
love.graphics.setColor(1, 1, 0, 1)
-- turn shader 'on' and use red to draw
@@ -863,9 +864,8 @@ love.test.graphics.Shader = function(test)
shader3:send('overwrite', 0)
love.graphics.setShader(shader3)
love.graphics.rectangle('fill', 8, 8, 8, 8)
love.graphics.setShader()
love.graphics.setColor(1, 1, 1, 1)
love.graphics.setCanvas()
love.graphics.pop()
local imgdata = love.graphics.readbackTexture(canvas)
test:assertPixels(imgdata, {
red = {{1,1},{1,7},{7,7},{7,1}},
@@ -873,6 +873,47 @@ love.test.graphics.Shader = function(test)
}, 'shader draw check')
test:compareImg(imgdata)
-- test some uncommon paths for shader uniforms
local shader4 = love.graphics.newShader[[
uniform bool booleans[5];
vec4 effect(vec4 vcolor, Image tex, vec2 tc, vec2 pc) {
return booleans[3] ? vec4(0, 1, 0, 0) : vec4(1, 0, 0, 0);
}
]]
shader4:send("booleans", false, true, true)
local shader5 = love.graphics.newShader[[
uniform sampler2D textures[5];
vec4 effect(vec4 vcolor, Image tex, vec2 tc, vec2 pc) {
return Texel(textures[2], tc) + Texel(textures[3], tc);
}
]]
local canvas2 = love.graphics.newCanvas(1, 1)
love.graphics.setCanvas(canvas2)
love.graphics.clear(0, 0.5, 0, 1)
love.graphics.setCanvas()
shader5:send("textures", canvas2, canvas2, canvas2, canvas2, canvas2)
local shader6 = love.graphics.newShader[[
struct Data {
bool boolValue;
float floatValue;
sampler2D tex;
};
uniform Data data[3];
vec4 effect(vec4 vcolor, Image tex, vec2 tc, vec2 pc) {
return data[1].boolValue ? Texel(data[0].tex, tc) : vec4(0.0, 0.0, 0.0, 0.0);
}
]]
shader6:send("data[1].boolValue", true)
shader6:send("data[0].tex", canvas2)
end