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LibSoftGPU: Make input in PixelQuad generic

Previously we would store vertex color and texture coordinates in
separate fields in PixelQuad. To make them accessible from shaders we
need to store them as a completely generic array of floats.
This commit is contained in:
Stephan Unverwerth 2022-09-17 12:38:57 +02:00 committed by Andrew Kaster
parent 49139d5f4e
commit c008b6ce18
3 changed files with 45 additions and 14 deletions

View file

@ -24,6 +24,14 @@ static constexpr int MAX_TEXTURE_SIZE = 2048;
static constexpr float MAX_TEXTURE_LOD_BIAS = 2.f;
static constexpr int SUBPIXEL_BITS = 4;
static constexpr int NUM_SHADER_INPUTS = 64;
// Verify that we have enough inputs to hold vertex color and texture coordinates for all fixed function texture units
static_assert(NUM_SHADER_INPUTS >= 4 + GPU::NUM_TEXTURE_UNITS * 4);
static constexpr int SHADER_INPUT_VERTEX_COLOR = 0;
static constexpr int SHADER_INPUT_FIRST_TEXCOORD = 4;
// See: https://www.khronos.org/opengl/wiki/Common_Mistakes#Texture_edge_color_problem
// FIXME: make this dynamically configurable through ConfigServer
static constexpr bool CLAMP_DEPRECATED_BEHAVIOR = false;