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Add imm_draw_checker_box function 

This replaces `fdrawcheckerboard` in drawing a standard gray
checkerboard for alpha backgrounds.
This commit is contained in:
Luca Rood 2017-02-16 18:22:28 -02:00
parent e3dd2b1591
commit b5cae50376
2 changed files with 19 additions and 1 deletions
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3
source/blender/editors/include/BIF_glutil.h
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@ -128,6 +128,9 @@ void imm_draw_line_box(unsigned pos, float x1, float y1, float x2, float y2);
/* use this version when VertexFormat has a vec3 position */
void imm_draw_line_box_3D(unsigned pos, float x1, float y1, float x2, float y2);
/* Draw a standard checkerboard to indicate transparent backgrounds */
void imm_draw_checker_box(float x1, float y1, float x2, float y2);
void imm_draw_line(unsigned pos, float x1, float y1, float x2, float y2);
/**
* Pack color into 3 bytes

17
source/blender/editors/screen/glutil.c
View File

@ -75,8 +75,9 @@ void fdrawbox(float x1, float y1, float x2, float y2)
glEnd();
}
void fdrawcheckerboard(float x1, float y1, float x2, float y2) /* DEPRECATED */
void fdrawcheckerboard(float x1, float y1, float x2, float y2)
{
/* DEPRECATED: use imm_draw_checker_box instead */
unsigned char col1[4] = {40, 40, 40}, col2[4] = {50, 50, 50};
glColor3ubv(col1);
@ -232,6 +233,20 @@ void imm_draw_line_box_3D(unsigned pos, float x1, float y1, float x2, float y2)
immEnd();
}
void imm_draw_checker_box(float x1, float y1, float x2, float y2)
{
unsigned int pos = add_attrib(immVertexFormat(), "pos", GL_FLOAT, 2, KEEP_FLOAT);
immBindBuiltinProgram(GPU_SHADER_2D_CHECKER);
immUniform4f("color1", 0.15f, 0.15f, 0.15f, 1.0f);
immUniform4f("color2", 0.2f, 0.2f, 0.2f, 1.0f);
immUniform1i("size", 8);
immRectf(pos, x1, y1, x2, y2);
immUnbindProgram();
}
void imm_cpack(unsigned int x)
{
immUniformColor3ub(((x)& 0xFF),