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OpenGL immediate mode: interface_draw.c

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This commit is contained in:
Clément Foucault
2017-02-06 14:06:13 +01:00
parent cb3daaf355
commit 8dbd961a3e
5 changed files with 140 additions and 112 deletions
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214
source/blender/editors/interface/interface_draw.c
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@@ -174,227 +174,251 @@ void UI_draw_roundbox_gl_mode(int mode, float minx, float miny, float maxx, floa
immUnbindProgram();
}
static void round_box_shade_col(const float col1[3], float const col2[3], const float fac)
static void round_box_shade_col(unsigned attrib, const float col1[3], float const col2[3], const float fac)
{
float col[3] = {
float col[4] = {
fac * col1[0] + (1.0f - fac) * col2[0],
fac * col1[1] + (1.0f - fac) * col2[1],
fac * col1[2] + (1.0f - fac) * col2[2]
fac * col1[2] + (1.0f - fac) * col2[2],
1.0f
};
glColor3fv(col);
immAttrib4fv(attrib, col);
}
/* linear horizontal shade within button or in outline */
/* view2d scrollers use it */
void UI_draw_roundbox_shade_x(
int mode, float minx, float miny, float maxx, float maxy,
float rad, float shadetop, float shadedown)
float rad, float shadetop, float shadedown, float col[4])
{
float vec[7][2] = {{0.195, 0.02}, {0.383, 0.067}, {0.55, 0.169}, {0.707, 0.293},
{0.831, 0.45}, {0.924, 0.617}, {0.98, 0.805}};
const float div = maxy - miny;
const float idiv = 1.0f / div;
float coltop[3], coldown[3], color[4];
float coltop[3], coldown[3];
int vert_count = 0;
int a;
VertexFormat *format = immVertexFormat();
unsigned pos = add_attrib(format, "pos", GL_FLOAT, 2, KEEP_FLOAT);
unsigned color = add_attrib(format, "color", GL_FLOAT, 4, KEEP_FLOAT);
immBindBuiltinProgram(GPU_SHADER_2D_SMOOTH_COLOR);
/* mult */
for (a = 0; a < 7; a++) {
mul_v2_fl(vec[a], rad);
}
/* get current color, needs to be outside of glBegin/End */
glGetFloatv(GL_CURRENT_COLOR, color);
/* 'shade' defines strength of shading */
coltop[0] = min_ff(1.0f, color[0] + shadetop);
coltop[1] = min_ff(1.0f, color[1] + shadetop);
coltop[2] = min_ff(1.0f, color[2] + shadetop);
coldown[0] = max_ff(0.0f, color[0] + shadedown);
coldown[1] = max_ff(0.0f, color[1] + shadedown);
coldown[2] = max_ff(0.0f, color[2] + shadedown);
coltop[0] = min_ff(1.0f, col[0] + shadetop);
coltop[1] = min_ff(1.0f, col[1] + shadetop);
coltop[2] = min_ff(1.0f, col[2] + shadetop);
coldown[0] = max_ff(0.0f, col[0] + shadedown);
coldown[1] = max_ff(0.0f, col[1] + shadedown);
coldown[2] = max_ff(0.0f, col[2] + shadedown);
glBegin(mode);
vert_count += (roundboxtype & UI_CNR_BOTTOM_RIGHT) ? 9 : 1;
vert_count += (roundboxtype & UI_CNR_TOP_RIGHT) ? 9 : 1;
vert_count += (roundboxtype & UI_CNR_TOP_LEFT) ? 9 : 1;
vert_count += (roundboxtype & UI_CNR_BOTTOM_LEFT) ? 9 : 1;
immBegin(mode, vert_count);
/* start with corner right-bottom */
if (roundboxtype & UI_CNR_BOTTOM_RIGHT) {
round_box_shade_col(coltop, coldown, 0.0);
glVertex2f(maxx - rad, miny);
round_box_shade_col(color, coltop, coldown, 0.0);
immVertex2f(pos, maxx - rad, miny);
for (a = 0; a < 7; a++) {
round_box_shade_col(coltop, coldown, vec[a][1] * idiv);
glVertex2f(maxx - rad + vec[a][0], miny + vec[a][1]);
round_box_shade_col(color, coltop, coldown, vec[a][1] * idiv);
immVertex2f(pos, maxx - rad + vec[a][0], miny + vec[a][1]);
}
round_box_shade_col(coltop, coldown, rad * idiv);
glVertex2f(maxx, miny + rad);
round_box_shade_col(color, coltop, coldown, rad * idiv);
immVertex2f(pos, maxx, miny + rad);
}
else {
round_box_shade_col(coltop, coldown, 0.0);
glVertex2f(maxx, miny);
round_box_shade_col(color, coltop, coldown, 0.0);
immVertex2f(pos, maxx, miny);
}
/* corner right-top */
if (roundboxtype & UI_CNR_TOP_RIGHT) {
round_box_shade_col(coltop, coldown, (div - rad) * idiv);
glVertex2f(maxx, maxy - rad);
round_box_shade_col(color, coltop, coldown, (div - rad) * idiv);
immVertex2f(pos, maxx, maxy - rad);
for (a = 0; a < 7; a++) {
round_box_shade_col(coltop, coldown, (div - rad + vec[a][1]) * idiv);
glVertex2f(maxx - vec[a][1], maxy - rad + vec[a][0]);
round_box_shade_col(color, coltop, coldown, (div - rad + vec[a][1]) * idiv);
immVertex2f(pos, maxx - vec[a][1], maxy - rad + vec[a][0]);
}
round_box_shade_col(coltop, coldown, 1.0);
glVertex2f(maxx - rad, maxy);
round_box_shade_col(color, coltop, coldown, 1.0);
immVertex2f(pos, maxx - rad, maxy);
}
else {
round_box_shade_col(coltop, coldown, 1.0);
glVertex2f(maxx, maxy);
round_box_shade_col(color, coltop, coldown, 1.0);
immVertex2f(pos, maxx, maxy);
}
/* corner left-top */
if (roundboxtype & UI_CNR_TOP_LEFT) {
round_box_shade_col(coltop, coldown, 1.0);
glVertex2f(minx + rad, maxy);
round_box_shade_col(color, coltop, coldown, 1.0);
immVertex2f(pos, minx + rad, maxy);
for (a = 0; a < 7; a++) {
round_box_shade_col(coltop, coldown, (div - vec[a][1]) * idiv);
glVertex2f(minx + rad - vec[a][0], maxy - vec[a][1]);
round_box_shade_col(color, coltop, coldown, (div - vec[a][1]) * idiv);
immVertex2f(pos, minx + rad - vec[a][0], maxy - vec[a][1]);
}
round_box_shade_col(coltop, coldown, (div - rad) * idiv);
glVertex2f(minx, maxy - rad);
round_box_shade_col(color, coltop, coldown, (div - rad) * idiv);
immVertex2f(pos, minx, maxy - rad);
}
else {
round_box_shade_col(coltop, coldown, 1.0);
glVertex2f(minx, maxy);
round_box_shade_col(color, coltop, coldown, 1.0);
immVertex2f(pos, minx, maxy);
}
/* corner left-bottom */
if (roundboxtype & UI_CNR_BOTTOM_LEFT) {
round_box_shade_col(coltop, coldown, rad * idiv);
glVertex2f(minx, miny + rad);
round_box_shade_col(color, coltop, coldown, rad * idiv);
immVertex2f(pos, minx, miny + rad);
for (a = 0; a < 7; a++) {
round_box_shade_col(coltop, coldown, (rad - vec[a][1]) * idiv);
glVertex2f(minx + vec[a][1], miny + rad - vec[a][0]);
round_box_shade_col(color, coltop, coldown, (rad - vec[a][1]) * idiv);
immVertex2f(pos, minx + vec[a][1], miny + rad - vec[a][0]);
}
round_box_shade_col(coltop, coldown, 0.0);
glVertex2f(minx + rad, miny);
round_box_shade_col(color, coltop, coldown, 0.0);
immVertex2f(pos, minx + rad, miny);
}
else {
round_box_shade_col(coltop, coldown, 0.0);
glVertex2f(minx, miny);
round_box_shade_col(color, coltop, coldown, 0.0);
immVertex2f(pos, minx, miny);
}
glEnd();
immEnd();
immUnbindProgram();
}
/* linear vertical shade within button or in outline */
/* view2d scrollers use it */
void UI_draw_roundbox_shade_y(
int mode, float minx, float miny, float maxx, float maxy,
float rad, float shadeLeft, float shadeRight)
float rad, float shadeleft, float shaderight, float col[4])
{
float vec[7][2] = {{0.195, 0.02}, {0.383, 0.067}, {0.55, 0.169}, {0.707, 0.293},
{0.831, 0.45}, {0.924, 0.617}, {0.98, 0.805}};
const float div = maxx - minx;
const float idiv = 1.0f / div;
float colLeft[3], colRight[3], color[4];
float colLeft[3], colRight[3];
int vert_count = 0;
int a;
/* mult */
for (a = 0; a < 7; a++) {
mul_v2_fl(vec[a], rad);
}
/* get current color, needs to be outside of glBegin/End */
glGetFloatv(GL_CURRENT_COLOR, color);
VertexFormat *format = immVertexFormat();
unsigned pos = add_attrib(format, "pos", GL_FLOAT, 2, KEEP_FLOAT);
unsigned color = add_attrib(format, "color", GL_FLOAT, 4, KEEP_FLOAT);
immBindBuiltinProgram(GPU_SHADER_2D_SMOOTH_COLOR);
/* 'shade' defines strength of shading */
colLeft[0] = min_ff(1.0f, color[0] + shadeLeft);
colLeft[1] = min_ff(1.0f, color[1] + shadeLeft);
colLeft[2] = min_ff(1.0f, color[2] + shadeLeft);
colRight[0] = max_ff(0.0f, color[0] + shadeRight);
colRight[1] = max_ff(0.0f, color[1] + shadeRight);
colRight[2] = max_ff(0.0f, color[2] + shadeRight);
colLeft[0] = min_ff(1.0f, col[0] + shadeleft);
colLeft[1] = min_ff(1.0f, col[1] + shadeleft);
colLeft[2] = min_ff(1.0f, col[2] + shadeleft);
colRight[0] = max_ff(0.0f, col[0] + shaderight);
colRight[1] = max_ff(0.0f, col[1] + shaderight);
colRight[2] = max_ff(0.0f, col[2] + shaderight);
glBegin(mode);
vert_count += (roundboxtype & UI_CNR_BOTTOM_RIGHT) ? 9 : 1;
vert_count += (roundboxtype & UI_CNR_TOP_RIGHT) ? 9 : 1;
vert_count += (roundboxtype & UI_CNR_TOP_LEFT) ? 9 : 1;
vert_count += (roundboxtype & UI_CNR_BOTTOM_LEFT) ? 9 : 1;
immBegin(mode, vert_count);
/* start with corner right-bottom */
if (roundboxtype & UI_CNR_BOTTOM_RIGHT) {
round_box_shade_col(colLeft, colRight, 0.0);
glVertex2f(maxx - rad, miny);
round_box_shade_col(color, colLeft, colRight, 0.0);
immVertex2f(pos, maxx - rad, miny);
for (a = 0; a < 7; a++) {
round_box_shade_col(colLeft, colRight, vec[a][0] * idiv);
glVertex2f(maxx - rad + vec[a][0], miny + vec[a][1]);
round_box_shade_col(color, colLeft, colRight, vec[a][0] * idiv);
immVertex2f(pos, maxx - rad + vec[a][0], miny + vec[a][1]);
}
round_box_shade_col(colLeft, colRight, rad * idiv);
glVertex2f(maxx, miny + rad);
round_box_shade_col(color, colLeft, colRight, rad * idiv);
immVertex2f(pos, maxx, miny + rad);
}
else {
round_box_shade_col(colLeft, colRight, 0.0);
glVertex2f(maxx, miny);
round_box_shade_col(color, colLeft, colRight, 0.0);
immVertex2f(pos, maxx, miny);
}
/* corner right-top */
if (roundboxtype & UI_CNR_TOP_RIGHT) {
round_box_shade_col(colLeft, colRight, 0.0);
glVertex2f(maxx, maxy - rad);
round_box_shade_col(color, colLeft, colRight, 0.0);
immVertex2f(pos, maxx, maxy - rad);
for (a = 0; a < 7; a++) {
round_box_shade_col(colLeft, colRight, (div - rad - vec[a][0]) * idiv);
glVertex2f(maxx - vec[a][1], maxy - rad + vec[a][0]);
round_box_shade_col(color, colLeft, colRight, (div - rad - vec[a][0]) * idiv);
immVertex2f(pos, maxx - vec[a][1], maxy - rad + vec[a][0]);
}
round_box_shade_col(colLeft, colRight, (div - rad) * idiv);
glVertex2f(maxx - rad, maxy);
round_box_shade_col(color, colLeft, colRight, (div - rad) * idiv);
immVertex2f(pos, maxx - rad, maxy);
}
else {
round_box_shade_col(colLeft, colRight, 0.0);
glVertex2f(maxx, maxy);
round_box_shade_col(color, colLeft, colRight, 0.0);
immVertex2f(pos, maxx, maxy);
}
/* corner left-top */
if (roundboxtype & UI_CNR_TOP_LEFT) {
round_box_shade_col(colLeft, colRight, (div - rad) * idiv);
glVertex2f(minx + rad, maxy);
round_box_shade_col(color, colLeft, colRight, (div - rad) * idiv);
immVertex2f(pos, minx + rad, maxy);
for (a = 0; a < 7; a++) {
round_box_shade_col(colLeft, colRight, (div - rad + vec[a][0]) * idiv);
glVertex2f(minx + rad - vec[a][0], maxy - vec[a][1]);
round_box_shade_col(color, colLeft, colRight, (div - rad + vec[a][0]) * idiv);
immVertex2f(pos, minx + rad - vec[a][0], maxy - vec[a][1]);
}
round_box_shade_col(colLeft, colRight, 1.0);
glVertex2f(minx, maxy - rad);
round_box_shade_col(color, colLeft, colRight, 1.0);
immVertex2f(pos, minx, maxy - rad);
}
else {
round_box_shade_col(colLeft, colRight, 1.0);
glVertex2f(minx, maxy);
round_box_shade_col(color, colLeft, colRight, 1.0);
immVertex2f(pos, minx, maxy);
}
/* corner left-bottom */
if (roundboxtype & UI_CNR_BOTTOM_LEFT) {
round_box_shade_col(colLeft, colRight, 1.0);
glVertex2f(minx, miny + rad);
round_box_shade_col(color, colLeft, colRight, 1.0);
immVertex2f(pos, minx, miny + rad);
for (a = 0; a < 7; a++) {
round_box_shade_col(colLeft, colRight, (vec[a][0]) * idiv);
glVertex2f(minx + vec[a][1], miny + rad - vec[a][0]);
round_box_shade_col(color, colLeft, colRight, (vec[a][0]) * idiv);
immVertex2f(pos, minx + vec[a][1], miny + rad - vec[a][0]);
}
round_box_shade_col(colLeft, colRight, 1.0);
glVertex2f(minx + rad, miny);
round_box_shade_col(color, colLeft, colRight, 1.0);
immVertex2f(pos, minx + rad, miny);
}
else {
round_box_shade_col(colLeft, colRight, 1.0);
glVertex2f(minx, miny);
round_box_shade_col(color, colLeft, colRight, 1.0);
immVertex2f(pos, minx, miny);
}
glEnd();
immEnd();
immUnbindProgram();
}
/* plain antialiased unfilled rectangle */