[2016.10] Sprite:setBlendMode(src, dst)

Comments

• rrraptor Member

  March 2020

  hgy29 said:

  but you can override the shader to use with a custom one on a sprite by sprite basis.

  I dont get it
  
  The only thing I can think is this:
  
  

  local fragmentShaderText = [[ uniform lowp vec4 fColor; uniform lowp sampler2D fTexture;   varying mediump vec2 fTexCoord;   void main(){ vec4 col = texture2D(fTexture, fTexCoord); vec3 gammCorrection = pow(col.rgb, vec3(1.0/2.2)); gl_FragColor = vec4(gammCorrection, col.a); }]] local vertexShaderText = [[ attribute highp vec3 vVertex; attribute mediump vec2 vTexCoord; uniform highp mat4 vMatrix; varying mediump vec2 fTexCoord;   void main() { vec4 vertex = vec4(vVertex,1.0); gl_Position = vMatrix*vertex; fTexCoord=vTexCoord; }]] local shader=Shader.new(vertexShaderText,fragmentShaderText,Shader.FLAG_FROM_CODE, { {name="vMatrix",type=Shader.CMATRIX,sys=Shader.SYS_WVP,vertex=true}, {name="fColor",type=Shader.CFLOAT4,sys=Shader.SYS_COLOR,vertex=false}, {name="fTexture",type=Shader.CTEXTURE,vertex=false}, }, { {name="vVertex",type=Shader.DFLOAT,mult=3,slot=0,offset=0}, {name="vColor",type=Shader.DUBYTE,mult=4,slot=1,offset=0}, {name="vTexCoord",type=Shader.DFLOAT,mult=2,slot=2,offset=0}, })   function Sprite:postInit() self:setShader(shader) end

  Likes: hgy29

  SuperShape | Nice blured shapes with shadows | Simple button pad | Simple layer class | Simple UI library | 2D camera lib | Color picker | FPS graph | Dear ImGui | cute_c2

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• hgy29 Maintainer

  March 2020 edited March 2020

  @rraptor, sure you can do that
  
  But that shader won't work for non textured shapes, particles, Path2D, etc...
  
  There are 11 shaders types used in Gideros:
  - Basic (Solid color, no texture, no per vertex color)
  - Color (Per vertex color)
  - Texture (Texture + color multiplier)
  - TextureAlpha (colored grey-scale/alpha texture, for fonts)
  - TextureColor (Texture + per vertex color)
  - TextureAlphaColor (Alpha Texture + per vertex color)
  - Particle (For liquidfun particles rendering)
  - Particles (For Gideros Particle sprite)
  - 3 shaders for Paths2D to render curves and outlines
  
  https://github.com/gideros/gideros/blob/master/2dsg/gfxbackends/Shaders.h#L68

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• keszegh Member

  March 2020

  well, i mostly composite meshes with a colored background, i guess as mesh inherits from sprite, i can change the shader of my meshes. am i right?
  also i don't know how i could change the background to linear color space, as that's not an element of the sprite hierarchy.
  (worst case i can make a mesh/pixel that has the background color but then i need to resize is any time the window is resized, also when i have an additional second screen then i need to resize it for that too, so it's a bit inconvenient).
  
  thanks for the tips so far.

  Longtitle Productions, creator of
  Fragmenter - animated loop machine and IKONOMIKON - the memory game

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