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Added SDL_SCALEMODE_PIXELART

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This is based on the algorithm presented by t3ssel8r:
https://www.youtube.com/watch?v=d6tp43wZqps
This commit is contained in:
Sam Lantinga
2025-03-12 08:45:25 -07:00
parent 853375da61
commit 3e9e22f17d
63 changed files with 15968 additions and 13125 deletions
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23
src/render/direct3d11/SDL_render_d3d11.c
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@@ -74,9 +74,10 @@ static const float TONEMAP_CHROME = 2;
//static const float TEXTURETYPE_NONE = 0;
static const float TEXTURETYPE_RGB = 1;
static const float TEXTURETYPE_NV12 = 2;
static const float TEXTURETYPE_NV21 = 3;
static const float TEXTURETYPE_YUV = 4;
static const float TEXTURETYPE_RGB_PIXELART = 2;
static const float TEXTURETYPE_NV12 = 3;
static const float TEXTURETYPE_NV21 = 4;
static const float TEXTURETYPE_YUV = 5;
static const float INPUTTYPE_UNSPECIFIED = 0;
static const float INPUTTYPE_SRGB = 1;
@@ -90,6 +91,11 @@ typedef struct
float input_type;
float color_scale;
float texel_width;
float texel_height;
float texture_width;
float texture_height;
float tonemap_method;
float tonemap_factor1;
float tonemap_factor2;
@@ -2106,7 +2112,15 @@ static void D3D11_SetupShaderConstants(SDL_Renderer *renderer, const SDL_RenderC
constants->input_type = INPUTTYPE_HDR10;
break;
default:
constants->texture_type = TEXTURETYPE_RGB;
if (cmd->data.draw.texture_scale_mode == SDL_SCALEMODE_PIXELART) {
constants->texture_type = TEXTURETYPE_RGB_PIXELART;
constants->texture_width = texture->w;
constants->texture_height = texture->h;
constants->texel_width = 1.0f / constants->texture_width;
constants->texel_height = 1.0f / constants->texture_height;
} else {
constants->texture_type = TEXTURETYPE_RGB;
}
if (texture->colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
constants->input_type = INPUTTYPE_SCRGB;
} else if (texture->colorspace == SDL_COLORSPACE_HDR10) {
@@ -2318,6 +2332,7 @@ static bool D3D11_SetCopyState(SDL_Renderer *renderer, const SDL_RenderCommand *
return SDL_SetError("Unknown texture address mode: %d", cmd->data.draw.texture_address_mode);
}
break;
case SDL_SCALEMODE_PIXELART: // Uses linear sampling
case SDL_SCALEMODE_LINEAR:
switch (cmd->data.draw.texture_address_mode) {
case SDL_TEXTURE_ADDRESS_CLAMP: