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#include "common/logger.h"
#include "common/image.h"
#include "graphics/opengl/gldevice.h"
#include "math/geometry.h"
#include <SDL/SDL.h>
#include <SDL/SDL_image.h>
#include <unistd.h>
void Init(Gfx::CGLDevice *device)
{
device->SetShadeModel(Gfx::SHADE_SMOOTH);
device->SetRenderState(Gfx::RENDER_STATE_DEPTH_TEST, false);
device->SetTextureEnabled(0, true);
device->SetTextureEnabled(1, true);
CImage img1;
if (! img1.Load("tex1.png"))
{
std::string err = img1.GetError();
GetLogger()->Error("texture 1 not loaded, error: %s!\n", err.c_str());
}
CImage img2;
if (! img2.Load("tex2.png"))
{
std::string err = img2.GetError();
GetLogger()->Error("texture 2 not loaded, error: %s!\n", err.c_str());
}
Gfx::TextureCreateParams tex1CreateParams;
tex1CreateParams.mipmap = true;
tex1CreateParams.format = Gfx::TEX_IMG_RGBA;
tex1CreateParams.minFilter = Gfx::TEX_MIN_FILTER_LINEAR_MIPMAP_LINEAR;
tex1CreateParams.magFilter = Gfx::TEX_MAG_FILTER_LINEAR;
Gfx::TextureCreateParams tex2CreateParams;
tex2CreateParams.mipmap = true;
tex2CreateParams.format = Gfx::TEX_IMG_RGBA;
tex2CreateParams.minFilter = Gfx::TEX_MIN_FILTER_NEAREST_MIPMAP_NEAREST;
tex2CreateParams.magFilter = Gfx::TEX_MAG_FILTER_NEAREST;
Gfx::Texture tex1 = device->CreateTexture(&img1, tex1CreateParams);
Gfx::Texture tex2 = device->CreateTexture(&img2, tex2CreateParams);
device->SetTexture(0, tex1);
device->SetTexture(1, tex2);
}
void Render(Gfx::CGLDevice *device)
{
device->BeginScene();
Math::Matrix ortho;
Math::LoadOrthoProjectionMatrix(ortho, -10, 10, -10, 10);
device->SetTransform(Gfx::TRANSFORM_PROJECTION, ortho);
Math::Matrix id;
id.LoadIdentity();
device->SetTransform(Gfx::TRANSFORM_WORLD, id);
device->SetTransform(Gfx::TRANSFORM_VIEW, id);
static Gfx::VertexTex2 quad[] =
{
Gfx::VertexTex2(Math::Vector(-2.0f, 2.0f, 0.0f), Math::Vector(), Math::Point(0.0f, 0.0f), Math::Point(0.0f, 0.0f)),
Gfx::VertexTex2(Math::Vector( 2.0f, 2.0f, 0.0f), Math::Vector(), Math::Point(1.0f, 0.0f), Math::Point(1.0f, 0.0f)),
Gfx::VertexTex2(Math::Vector( 2.0f, -2.0f, 0.0f), Math::Vector(), Math::Point(1.0f, 1.0f), Math::Point(1.0f, 1.0f)),
Gfx::VertexTex2(Math::Vector( 2.0f, -2.0f, 0.0f), Math::Vector(), Math::Point(1.0f, 1.0f), Math::Point(1.0f, 1.0f)),
Gfx::VertexTex2(Math::Vector(-2.0f, -2.0f, 0.0f), Math::Vector(), Math::Point(0.0f, 1.0f), Math::Point(0.0f, 1.0f)),
Gfx::VertexTex2(Math::Vector(-2.0f, 2.0f, 0.0f), Math::Vector(), Math::Point(0.0f, 0.0f), Math::Point(0.0f, 0.0f)),
};
Gfx::TextureStageParams tex1StageParams;
tex1StageParams.colorOperation = Gfx::TEX_MIX_OPER_DEFAULT;
tex1StageParams.alphaOperation = Gfx::TEX_MIX_OPER_DEFAULT;
device->SetTextureStageParams(0, tex1StageParams);
Gfx::TextureStageParams tex2StageParams;
tex2StageParams.colorOperation = Gfx::TEX_MIX_OPER_DEFAULT;
tex2StageParams.alphaOperation = Gfx::TEX_MIX_OPER_DEFAULT;
device->SetTextureStageParams(1, tex2StageParams);
Math::Matrix t;
Math::LoadTranslationMatrix(t, Math::Vector(-4.0f, 4.0f, 0.0f));
device->SetTransform(Gfx::TRANSFORM_VIEW, t);
device->SetTextureEnabled(0, true);
device->SetTextureEnabled(1, false);
device->DrawPrimitive(Gfx::PRIMITIVE_TRIANGLES, quad, 6);
Math::LoadTranslationMatrix(t, Math::Vector( 4.0f, 4.0f, 0.0f));
device->SetTransform(Gfx::TRANSFORM_VIEW, t);
device->SetTextureEnabled(0, false);
device->SetTextureEnabled(1, true);
device->DrawPrimitive(Gfx::PRIMITIVE_TRIANGLES, quad, 6);
Math::LoadTranslationMatrix(t, Math::Vector( 0.0f, -4.0f, 0.0f));
device->SetTransform(Gfx::TRANSFORM_VIEW, t);
device->SetTextureEnabled(0, true);
device->SetTextureEnabled(1, true);
tex1StageParams.colorOperation = Gfx::TEX_MIX_OPER_DEFAULT;
tex1StageParams.alphaOperation = Gfx::TEX_MIX_OPER_DEFAULT;
device->SetTextureStageParams(0, tex1StageParams);
tex2StageParams.colorOperation = Gfx::TEX_MIX_OPER_ADD;
tex2StageParams.colorArg1 = Gfx::TEX_MIX_ARG_COMPUTED_COLOR;
tex2StageParams.colorArg2 = Gfx::TEX_MIX_ARG_TEXTURE;
tex2StageParams.alphaOperation = Gfx::TEX_MIX_OPER_DEFAULT;
device->SetTextureStageParams(1, tex2StageParams);
device->DrawPrimitive(Gfx::PRIMITIVE_TRIANGLES, quad, 6);
device->EndScene();
}
int main()
{
CLogger logger;
// Without any error checking, for simplicity
SDL_Init(SDL_INIT_VIDEO);
IMG_Init(IMG_INIT_PNG);
const SDL_VideoInfo *videoInfo = SDL_GetVideoInfo();
Uint32 videoFlags = SDL_OPENGL | SDL_GL_DOUBLEBUFFER | SDL_HWPALETTE;
if (videoInfo->hw_available)
videoFlags |= SDL_HWSURFACE;
else
videoFlags |= SDL_SWSURFACE;
if (videoInfo->blit_hw)
videoFlags |= SDL_HWACCEL;
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_Surface *surface = SDL_SetVideoMode(800, 600, 32, videoFlags);
SDL_WM_SetCaption("Texture Test", "Texture Test");
Gfx::CGLDevice *device = new Gfx::CGLDevice(Gfx::GLDeviceConfig());
device->Create();
Init(device);
bool done = false;
while (! done)
{
Render(device);
SDL_GL_SwapBuffers();
SDL_Event event;
SDL_PollEvent(&event);
if (event.type == SDL_QUIT)
done = true;
usleep(10000);
}
device->Destroy();
delete device;
SDL_FreeSurface(surface);
IMG_Quit();
SDL_Quit();
return 0;
}
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