Plain 2D rendering in D3D11, without the distracting feature set of a complete sprite renderer and allowing arbitrarily placed triangle vertices with absolute pixel coordinate positioning (there's really no need for the sometimes confusing complication of a full-on projection matrix pipeline for UI and 2D games). Like the original Minimal D3D11, this one uses a canonical 1:1 TRIANGLELIST vertex buffer with input layout, so no fancy manual custom buffer fetching and in-shader instan
Plain 2D rendering in D3D11, without the distracting feature set of a complete sprite renderer and allowing arbitrarily placed triangle vertices with absolute pixel coordinate positioning (there's really no need for the sometimes confusing complication of a full-on projection matrix pipeline for UI and 2D games). Like the original Minimal D3D11, this one uses a canonical 1:1 TRIANGLELIST vertex buffer with input layout, so no fancy manual custom buffer fetching and in-shader in
Ultra-compact sprite rendering code with example frame animation logic. This release contains tech bits from the upcoming SuperNeo™ 2D game engine and includes anchor/pivot point, rotation, color filtering, alpha blending and built-in antialiased point sampling. As usual: complete, runnable single-function app. ~150 LOC. No modern C++, OOP or (other) obscuring cruft.
Sprites are rendered back-to-front (AKA "painter's algorithm") in the order they are submitted, as one draw call. The provided setup employs a single texture atlas containing all the sprite graphics.
The renderer is "im
Minimal D3D11 sprite renderer: basic back-to-front sprite rendering reference code with example sprite sheet animation logic. As usual: Complete, runnable single-function app. No modern C++ / OOP / obscuring cruft.
Swap out the sprite sheet with a font atlas for a lightweight GUI / text renderer. Clip individual sprites and glyphs by offsetting screenPos and atlasPos to top left corner of visible area and adjusting size accordingly (all values in pixels):
sprite.screenPos.x += 17;
sprite.screenPos.y += 10;
Minimal WASAPI reference implementation. Runnable console application contained in a single function and laid out in a linear, step-by-step fashion. No modern C++ / OOP / obscuring cruft. Produces a steady sine wave sound.
(This is a re-post of the same gist I posted a few years earlier, simply due to me wanting the Minimal D3D11 series to be listed contiguously and it's not possible to hide or rearrange gists).
A minimal Direct3D 11 implementation of "antialiased point sampling", useful for smooth fractional movement and non-integer scaling of pixel art AKA "fat pixel" aesthetics.
Also view below side-by-side point sampling comparison on YouTube (video is zoomed in to counter implicit downsampling & compression artifacts and make aa effect more apparent) or check out the original Shadertoy.
The actual sampler is set to bilinear filtering (the default D3D11 sampler state) in order to utilize single texture-read hardware interpolation, then emulating point sampling in the shader and applying AA at the fat pixel boundaries. Use with premultiplied alpha textures* and keep a one pixel transparent border around each sprite/tile.
A quick side exercise to see how little code one can get away with to put that RGB triangle on screen using D3D11 (without bending over backwards with trickery). This is a complete app in < 40 LOC (including the HLSL).
For more.. elaborate.. D3D11 reference code, see the original Minimal D3D11, Minimal D3D11 pt2 and Minimal D3D11 pt3
An elaboration on Minimal D3D11 pt2, adding shadowmapping and incorporating various improvements and alternative approaches to the rendering setup, such as manual vertex fetching, samplerless texture lookup, null shader depth map rendering and procedurally generated texture and instance data.
As before, this is intended to be an an "API familiarizer" - an uncluttered Direct3D 11 setup & basic rendering reference implementation, in the form of a complete, runnable Windows application contained in a single function and laid out in a linear, step-by-step fashion. No modern C++ / OOP / obscuring cruft, only ~190 LOC. View on YouTube
Follow-up to Minimal D3D11, adding instanced rendering. As before: An uncluttered Direct3D 11 setup & basic rendering primer / API familiarizer. Complete, runnable Windows application contained in a single function and laid out in a linear, step-by-step fashion. No modern C++ / OOP / obscuring cruft.
The main difference here is that the hollow cube is rendered using DrawIndexedInstanced (which saves a lot of vertices compared to the original, so model data is now small enough to be included in the source without being too much in the way), but also all trigonometry and matrix math is moved to the vertex shader, further simplifying the main code.
Each instance is merely this piece of geometry, consisting of 4 triangles:
..which is
Minimal D3D11 reference implementation: An uncluttered Direct3D 11 setup + basic rendering primer and API familiarizer. Complete, runnable Windows application contained in a single function and laid out in a linear, step-by-step fashion that should be easy to follow from the code alone. ~200 LOC. No modern C++, OOP or (other) obscuring cruft. View on YouTube
