This function sets the pixel data of a texture.

Syntax

• void SetPixels(const char* buf, int miplevel=0, int framenumber=0, int cubeface=0)

Parameters

• buf: the memory buffer to read the pixel data from.
• miplevel: the mipmap level to set the pixel data for.
• framenumber: the animation frame number to set the pixel data for.
• cubeface: the cubemap face to set the mipmap level for.

Remarks

The Texture::GetMipmapSize() function should be used to ensure the supplied memory buffer is the correct size.

This function is not available in Lua.

Example

#include "Leadwerks.h"

using namespace Leadwerks;

int main(int argc, const char *argv[])
{
        Leadwerks::Window* window = Leadwerks::Window::Create();
        Context* context = Context::Create(window);
        Texture* texture = Texture::Load("Materials/Grass/grass01.tex");

        //Create a buffer to store pixel data in
        char* pixels = (char*)malloc(texture->GetMipmapSize(0)*8);

        //Get the pixel data from the texture and invert it
        texture->GetPixels(pixels);
        char r, g, b;
        for (int x = 0; x < 512; x++)
        {
                for (int y = 0; y<512; y++)
                {
                        int p = (x*texture->GetWidth() + y) * 4;
                        memcpy(&r, pixels + p + 0, 1);
                        memcpy(&g, pixels + p + 1, 1);
                        memcpy(&b, pixels + p + 2, 1);

                        r = 255 - r;
                        g = 255 - g;
                        b = 255 - b;

                        memcpy(pixels + p + 0, &r, 1);
                        memcpy(pixels + p + 1, &g, 1);
                        memcpy(pixels + p + 2, &b, 1);
                }
        }

        //Set the modified pixel data
        texture->SetPixels(pixels);
        free(pixels);

        while (true)
        {
                if (window->Closed() || window->KeyDown(Key::Escape)) return false;
                context->SetColor(0, 0, 0, 0);
                context->Clear();

                //Display the texture on screen
                context->SetColor(1, 1, 1, 0);
                context->DrawImage(texture, 0, 0);

                context->Sync();
        }
        return 0;
}