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author | Scott Anderson <ascent12@hotmail.com> | 2017-08-06 21:38:40 +1200 |
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committer | Scott Anderson <ascent12@hotmail.com> | 2017-08-06 21:38:40 +1200 |
commit | 1db97a9af906524b577e5f1a4f842e18a0a942a4 (patch) | |
tree | 8b6bc2ed6b43d6aabbd433a33c7901c333b71a04 /render | |
parent | aedfa27d3a213dd9cf53ed3351874b34ff0de119 (diff) |
Updated DRM cursor rendering
Diffstat (limited to 'render')
-rw-r--r-- | render/matrix.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/render/matrix.c b/render/matrix.c index 4de20e5d..c7b11efe 100644 --- a/render/matrix.c +++ b/render/matrix.c @@ -1,5 +1,6 @@ #include <string.h> #include <math.h> +#include <wayland-server-protocol.h> #include <wlr/render/matrix.h> /* Obtains the index for the given row/column */ @@ -81,3 +82,62 @@ void wlr_matrix_mul(const float (*x)[16], const float (*y)[16], float (*product) }; memcpy(*product, _product, sizeof(_product)); } + +static const float transforms[][4] = { + [WL_OUTPUT_TRANSFORM_NORMAL] = { + 1.0f, 0.0f, + 0.0f, -1.0f, + }, + [WL_OUTPUT_TRANSFORM_90] = { + 0.0f, -1.0f, + -1.0f, 0.0f, + }, + [WL_OUTPUT_TRANSFORM_180] = { + -1.0f, 0.0f, + 0.0f, 1.0f, + }, + [WL_OUTPUT_TRANSFORM_270] = { + 0.0f, 1.0f, + 1.0f, 0.0f, + }, + [WL_OUTPUT_TRANSFORM_FLIPPED] = { + -1.0f, 0.0f, + 0.0f, -1.0f, + }, + [WL_OUTPUT_TRANSFORM_FLIPPED_90] = { + 0.0f, 1.0f, + -1.0f, 0.0f, + }, + [WL_OUTPUT_TRANSFORM_FLIPPED_180] = { + 1.0f, 0.0f, + 0.0f, 1.0f, + }, + [WL_OUTPUT_TRANSFORM_FLIPPED_270] = { + 0.0f, -1.0f, + 1.0f, 0.0f, + }, +}; + +// Equivilent to glOrtho(0, width, 0, height, 1, -1) with the transform applied +void wlr_matrix_surface(float mat[static 16], int32_t width, int32_t height, + enum wl_output_transform transform) { + memset(mat, 0, sizeof(*mat) * 16); + + const float *t = transforms[transform]; + float x = 2.0f / width; + float y = 2.0f / height; + + // Rotation + relection + mat[0] = x * t[0]; + mat[1] = x * t[1]; + mat[4] = y * t[2]; + mat[5] = y * t[3]; + + // Translation + mat[3] = -copysign(1.0f, mat[0] + mat[1]); + mat[7] = -copysign(1.0f, mat[4] + mat[5]); + + // Identity + mat[10] = 1.0f; + mat[15] = 1.0f; +} |