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Review BeginTextureMode() usage

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Moved outside BeginDrawing()/EndDrawing() to illustrate drawing is happening to an external texture (not screen)
This commit is contained in:
Ray 2021-06-23 01:25:09 +02:00
parent f989048bda
commit 716e26aa37
8 changed files with 113 additions and 143 deletions
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51
examples/shaders/shaders_custom_uniform.c
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@ -65,11 +65,11 @@ int main(void)
// Setup orbital camera
SetCameraMode(camera, CAMERA_ORBITAL); // Set an orbital camera mode
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
@ -81,55 +81,46 @@ int main(void)
// Send new value to the shader to be used on drawing
SetShaderValue(shader, swirlCenterLoc, swirlCenter, SHADER_UNIFORM_VEC2);
UpdateCamera(&camera); // Update camera
UpdateCamera(&camera); // Update camera
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginTextureMode(target); // Enable drawing to texture
ClearBackground(RAYWHITE); // Clear texture background
BeginMode3D(camera); // Begin 3d mode drawing
DrawModel(model, position, 0.5f, WHITE); // Draw 3d model with texture
DrawGrid(10, 1.0f); // Draw a grid
EndMode3D(); // End 3d mode drawing, returns to orthographic 2d mode
DrawText("TEXT DRAWN IN RENDER TEXTURE", 200, 10, 30, RED);
EndTextureMode(); // End drawing to texture (now we have a texture available for next passes)
BeginDrawing();
ClearBackground(RAYWHITE); // Clear screen background
ClearBackground(RAYWHITE);
BeginTextureMode(target); // Enable drawing to texture
ClearBackground(RAYWHITE); // Clear texture background
BeginMode3D(camera); // Begin 3d mode drawing
DrawModel(model, position, 0.5f, WHITE); // Draw 3d model with texture
DrawGrid(10, 1.0f); // Draw a grid
EndMode3D(); // End 3d mode drawing, returns to orthographic 2d mode
DrawText("TEXT DRAWN IN RENDER TEXTURE", 200, 10, 30, RED);
EndTextureMode(); // End drawing to texture (now we have a texture available for next passes)
// Enable shader using the custom uniform
BeginShaderMode(shader);
// NOTE: Render texture must be y-flipped due to default OpenGL coordinates (left-bottom)
DrawTextureRec(target.texture, (Rectangle){ 0, 0, (float)target.texture.width, (float)-target.texture.height }, (Vector2){ 0, 0 }, WHITE);
EndShaderMode();
// Draw some 2d text over drawn texture
DrawText("(c) Barracks 3D model by Alberto Cano", screenWidth - 220, screenHeight - 20, 10, GRAY);
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadShader(shader); // Unload shader
UnloadTexture(texture); // Unload texture
UnloadModel(model); // Unload model
UnloadRenderTexture(target); // Unload render texture
UnloadShader(shader); // Unload shader
UnloadTexture(texture); // Unload texture
UnloadModel(model); // Unload model
UnloadRenderTexture(target); // Unload render texture
CloseWindow(); // Close window and OpenGL context
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;