Dear Team
i am trying to adapt the sample occlusionQuery sample to it s equivalent in opengl es 2 using my custom lib to manage occlusion query(super good sample).
i have problem with your effect effect.pfx , i dont know really glsl for opengl es 3 and the OUT keyword translation
I was wondering if you kindly be able to provide a translation for glsl es 2 of the effect in OcclusionQueries demo ?
really the problem is the RenderDIffusion .
thanks in advance if you can
daviid
[HEADER]
VERSION 01.00.00.00
DESCRIPTION OGLES3OcclusionQueries
COPYRIGHT Imagination Technologies
[/HEADER]
//
// Effect to render the scene using a cube shadow map
//
[EFFECT]
NAME RenderDiffuse
// GLOBALS UNIFORMS
UNIFORM uWorldViewProjMatrix WORLDVIEWPROJECTION
UNIFORM uWorldViewMatrix WORLDVIEW
UNIFORM uWorldViewIT WORLDVIEWIT
UNIFORM uLightPosView LIGHTPOSEYE
UNIFORM uColour MATERIALCOLORDIFFUSE
UNIFORM sTextureMap TEXTURE0
// ATTRIBUTES
ATTRIBUTE inVertex POSITION
ATTRIBUTE inNormal NORMAL
ATTRIBUTE inTexCoord UV
// SHADERS
VERTEXSHADER DiffuseVertexShader
FRAGMENTSHADER DiffuseFragmentShader
[/EFFECT]
[VERTEXSHADER]
NAME DiffuseVertexShader
[GLSL_CODE]
#version 300 es
#define VERTEX_ARRAY 0
#define NORMAL_ARRAY 1
#define TEXCOORD_ARRAY 2
layout (location = VERTEX_ARRAY) in highp vec3 inVertex;
layout (location = NORMAL_ARRAY) in highp vec3 inNormal;
layout (location = TEXCOORD_ARRAY) in mediump vec2 inTexCoord;
uniform highp mat4 uWorldViewProjMatrix;
uniform highp mat4 uWorldViewMatrix;
uniform highp mat3 uWorldViewIT;
uniform highp vec3 uLightPosView;
out mediump vec2 vTexCoord;
out highp float vDiffuse;
void main()
{
gl_Position = uWorldViewProjMatrix * vec4(inVertex, 1.0);
vTexCoord = inTexCoord;
highp vec3 posView = (uWorldViewMatrix * vec4(inVertex, 1.0)).xyz;
highp vec3 lightDirView = normalize(uLightPosView - posView);
highp vec3 normalView = uWorldViewIT * inNormal;
vDiffuse = max(dot(lightDirView, normalView), 0.0);
}
[/GLSL_CODE]
[/VERTEXSHADER]
[FRAGMENTSHADER]
NAME DiffuseFragmentShader
[GLSL_CODE]
#version 300 es
uniform sampler2D sTexture;
uniform lowp vec4 uColour;
in mediump vec2 vTexCoord;
in highp float vDiffuse;
layout(location = 0) out lowp vec4 oColour;
void main()
{
oColour = texture(sTexture, vTexCoord) * uColour * vDiffuse;
}
[/GLSL_CODE]
[/FRAGMENTSHADER]
//
// Renders a single constant material colour
//
[EFFECT]
NAME RenderMaterialColour
// GLOBALS UNIFORMS
UNIFORM uWorldViewProjMatrix WORLDVIEWPROJECTION
UNIFORM uMaterialColour MATERIALCOLORDIFFUSE
// ATTRIBUTES
ATTRIBUTE inVertex POSITION
// SHADERS
VERTEXSHADER MaterialColourVertexShader
FRAGMENTSHADER MaterialColourFragmentShader
[/EFFECT]
[VERTEXSHADER]
NAME MaterialColourVertexShader
[GLSL_CODE]
#version 300 es
#define VERTEX_ARRAY 0
#define NORMAL_ARRAY 1
#define TEXCOORD_ARRAY 2
layout (location = VERTEX_ARRAY) in highp vec3 inVertex;
uniform highp mat4 uWorldViewProjMatrix;
void main()
{
gl_Position = uWorldViewProjMatrix * vec4(inVertex, 1.0);
}
[/GLSL_CODE]
[/VERTEXSHADER]
[FRAGMENTSHADER]
NAME MaterialColourFragmentShader
[GLSL_CODE]
#version 300 es
uniform lowp vec4 uMaterialColour;
layout(location = 0) out lowp vec4 oColour;
void main()
{
oColour = uMaterialColour;
}
[/GLSL_CODE]
[/FRAGMENTSHADER]
Hi David,
Here’s an overview of how ES 3.0’s in/out’s compare to ES 2.0:
- Vertex shader in (ES 3.0) = vertex shader attribute (ES 2.0)
- Vertex shader out (ES 3.0) = vertex shader varying (ES 2.0)
- Vertex shader gl_Position (ES 3.0) = vertex shader gl_Position (ES 2.0)
- Fragment shader in (ES 3.0) = fragment shader varying (ES 2.0)
- Fragment shader out (ES 3.0) = fragment shader gl_FragColor/gl_FragData[n] (ES 2.0)
The change was made to simplify the API. It also makes the API cleaner when rendering to Multiple Render Targets (MRTs) in fragments shaders.
gl_Position is an exception to the in/out rules, as the data is passed on to a fixed stage of the graphics pipeline.
Thanks,
Joe
Thank you very much Joe , i missed the OUT completely, (i didnt check the glsl spec ) i came directly to the forum 
Joe
i am still having error with the translation , may you tell me what is wrong ??
[HEADER]
VERSION 01.00.00.00
DESCRIPTION OGLES3OcclusionQueries
COPYRIGHT Imagination Technologies
[/HEADER]
//
// Effect to render the scene using a cube shadow map
//
[EFFECT]
NAME RenderDiffuse
// GLOBALS UNIFORMS
UNIFORM uWorldViewProjMatrix WORLDVIEWPROJECTION
UNIFORM uWorldViewMatrix WORLDVIEW
UNIFORM uWorldViewIT WORLDVIEWIT
UNIFORM uLightPosView LIGHTPOSEYE
UNIFORM uColour MATERIALCOLORDIFFUSE
UNIFORM sTextureMap TEXTURE0
// ATTRIBUTES
ATTRIBUTE inVertex POSITION
ATTRIBUTE inNormal NORMAL
ATTRIBUTE inTexCoord UV
// SHADERS
VERTEXSHADER DiffuseVertexShader
FRAGMENTSHADER DiffuseFragmentShader
[/EFFECT]
[VERTEXSHADER]
NAME DiffuseVertexShader
[GLSL_CODE]
#define VERTEX_ARRAY 0
#define NORMAL_ARRAY 1
#define TEXCOORD_ARRAY 2
attribute highp vec3 inVertex;
attribute highp vec3 inNormal;
attribute mediump vec2 inTexCoord;
uniform highp mat4 uWorldViewProjMatrix;
uniform highp mat4 uWorldViewMatrix;
uniform highp mat3 uWorldViewIT;
uniform highp vec3 uLightPosView;
varying mediump vec2 vTexCoord;
varying highp float vDiffuse;
void main()
{
gl_Position = uWorldViewProjMatrix * vec4(inVertex, 1.0);
vTexCoord = inTexCoord;
highp vec3 posView = (uWorldViewMatrix * vec4(inVertex, 1.0)).xyz;
highp vec3 lightDirView = normalize(uLightPosView - posView);
highp vec3 normalView = uWorldViewIT * inNormal;
vDiffuse = max(dot(lightDirView, normalView), 0.0);
}
[/GLSL_CODE]
[/VERTEXSHADER]
[FRAGMENTSHADER]
NAME DiffuseFragmentShader
[GLSL_CODE]
uniform sampler2D sTexture;
uniform lowp vec4 uColour;
varying mediump vec2 vTexCoord;
varying highp float vDiffuse;
varying lowp vec4 oColour;
void main()
{
oColour = texture(sTexture, vTexCoord) * uColour * vDiffuse;
}
[/GLSL_CODE]
[/FRAGMENTSHADER]
//
// Renders a single constant material colour
//
[EFFECT]
NAME RenderMaterialColour
// GLOBALS UNIFORMS
UNIFORM uWorldViewProjMatrix WORLDVIEWPROJECTION
UNIFORM uMaterialColour MATERIALCOLORDIFFUSE
// ATTRIBUTES
ATTRIBUTE inVertex POSITION
// SHADERS
VERTEXSHADER MaterialColourVertexShader
FRAGMENTSHADER MaterialColourFragmentShader
[/EFFECT]
[VERTEXSHADER]
NAME MaterialColourVertexShader
[GLSL_CODE]
#define VERTEX_ARRAY 0
#define NORMAL_ARRAY 1
#define TEXCOORD_ARRAY 2
layout (location = VERTEX_ARRAY) in highp vec3 inVertex;
uniform highp mat4 uWorldViewProjMatrix;
void main()
{
gl_Position = uWorldViewProjMatrix * vec4(inVertex, 1.0);
}
[/GLSL_CODE]
[/VERTEXSHADER]
[FRAGMENTSHADER]
NAME MaterialColourFragmentShader
[GLSL_CODE]
uniform lowp vec4 uMaterialColour;
layout(location = 0) out lowp vec4 oColour;
void main()
{
oColour = uMaterialColour;
}
[/GLSL_CODE]
[/FRAGMENTSHADER]
thanks if you can
david
