Can't make minimal material work Topic is solved

[slapin]

Hi, all! I'm trying to make the following material work. No errors reported and no ideas so far... It draws blackness.

Code: Select all

material Debug/White
{
        technique
        {
                pass
                {
                        lighting off
                        depth_write off
                        ambient 1.0 1.0 1.0 1.0
                        diffuse 1.0 1.0 1.0 1.0
                        specular 1.0 1.0 1.0 1.0
                        vertex_program_ref debug_vp
                        {
                        }
                        fragment_program_ref debug_fp
                        {
                        }
                }
        }
}

Program:

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fragment_program debug_fp glsl glsles glslang hlsl
{
        source debug.frag
        default_params
        {
                param_named_auto ambient surface_ambient_colour
                param_named_auto diffuse surface_diffuse_colour
        }
}

vertex_program debug_vp glsl glsles glslang hlsl
{
        source debug.vert
        default_params
        {
        }
}

debug.frag

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OGRE_NATIVE_GLSL_VERSION_DIRECTIVE
#include <OgreUnifiedShader.h>

OGRE_UNIFORMS(uniform vec4 ambient;)
OGRE_UNIFORMS(uniform vec4 diffuse;)

MAIN_PARAMETERS
MAIN_DECLARATION
{
//    gl_FragColor = ambient * diffuse;
    gl_FragColor = vec4(0, 0, 1, 1);
}

debug.vert

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#include <OgreUnifiedShader.h>

OGRE_UNIFORMS(
    uniform mat4 worldViewProj;
)

MAIN_PARAMETERS
IN(vec4 vertex, POSITION)
MAIN_DECLARATION
{
    gl_Position = mul(worldViewProj, vertex);
}

[slapin]

What can I do to make this work?

[slapin]

renderdoc draws black screen with this material enabled but no errors so far, I guess there is something fundamentally wrong with it...

[paroj]

whats the value of worldViewProj?

[slapin]

whats the value of worldViewProj?

All zeroes

[slapin]

whats the value of worldViewProj?

All zeroes

Also I see that worldViewProj is not bound while vertex is bound (position is bound to same uniform index so I guess they are the same).

[slapin]

Fixed it!
You can congratulate me with making my first Ogre shader-based material. One can use it for simple unlit materials for debug and markers.
It is strange RTSS can't do these...
debug.program:

Code: Select all

fragment_program debug_fp glsl glsles glslang hlsl
{
        source debug.frag
        default_params
        {
                param_named_auto ambient surface_ambient_colour
                param_named_auto diffuse surface_diffuse_colour
        }
}

vertex_program debug_vp glsl glsles glslang hlsl
{
        source debug.vert
        default_params
        {
                /* I thought it was bound automagically */
                param_named_auto worldViewProj worldviewproj_matrix
        }
}

debug.vert:

Code: Select all

OGRE_NATIVE_GLSL_VERSION_DIRECTIVE
#include <OgreUnifiedShader.h>

OGRE_UNIFORMS(
    uniform mat4 worldViewProj;
)

MAIN_PARAMETERS
IN(vec4 vertex, POSITION)
IN(vec3 normal, NORMAL)
IN(vec3 tangent, TANGENT)
IN(vec3 uv0, TEXCOORD0)

MAIN_DECLARATION
{
    gl_Position = worldViewProj * vertex;
}

debug.frag

Code: Select all

OGRE_NATIVE_GLSL_VERSION_DIRECTIVE
#include <OgreUnifiedShader.h>

OGRE_UNIFORMS(uniform vec4 ambient;)
OGRE_UNIFORMS(uniform vec4 diffuse;)

MAIN_PARAMETERS
MAIN_DECLARATION
{
    gl_FragColor = ambient * diffuse;
}

Also I created my own C++ class for skybox because default skybox did not like my material and for some reason I could not inherit Ogre::SceneManager::SkyRenderer and added that
shader to the cube as material and now I can go far with it, just need to understand how to bind values from code

Code: Select all

material Skybox/Dynamic
{
        technique
        {
                pass
                {
                        lighting off
                        depth_write off
                        ambient 1.0 1.0 1.0 1.0
                        diffuse 0.0 0.0 1.0 1.0
                        specular 0.0 0.0 0.0 1.0
                        vertex_program_ref debug_vp
                        {
                        }
                        fragment_program_ref debug_fp
                        {
                        }
                }
        }
}

Now I can make dynamic sky I want. Thanks a lot!

[rpgplayerrobin]

How to bind values from code:

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	// Check if the pass has a fragment shader
	if (pass->hasFragmentProgram())
	{
		// Check first if the named constant exists
		GpuProgramParametersSharedPtr tmpGPUParam = pass->getFragmentProgramParameters();
		std::string tmpConstant = "test_variable";
		if (tmpGPUParam->_findNamedConstantDefinition(tmpConstant, false))
			// Set the parameter
			tmpGPUParam->setNamedConstant(tmpConstant, Vector4(colour.r, colour.g, colour.b, colour.a));
	}

[slapin]

Thanks a lot!