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Drop shadows for fonts.

This commit is contained in:
Themaister 2011-12-03 19:48:13 +01:00
parent 8a5c537e15
commit 02d40aa212
1 changed files with 24 additions and 4 deletions
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28
gfx/gl.c
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@ -192,6 +192,7 @@ typedef struct gl
char font_last_msg[256]; char font_last_msg[256];
int font_last_width, font_last_height; int font_last_width, font_last_height;
GLfloat font_color[16]; GLfloat font_color[16];
GLfloat font_color_dark[16];
#endif #endif
} gl_t; } gl_t;
@ -386,6 +387,13 @@ static inline void gl_init_font(gl_t *gl, const char *font_path, unsigned font_s
gl->font_color[4 * i + 3] = 1.0; gl->font_color[4 * i + 3] = 1.0;
} }
for (unsigned i = 0; i < 4; i++)
{
for (unsigned j = 0; j < 3; j++)
gl->font_color_dark[4 * i + j] = 0.3 * gl->font_color[4 * i + j];
gl->font_color_dark[4 * i + 3] = 1.0;
}
#else #else
(void)gl; (void)gl;
(void)font_path; (void)font_path;
@ -748,7 +756,7 @@ static void blit_fonts(gl_t *gl, const struct font_output *head, const struct fo
} }
static void calculate_font_coords(gl_t *gl, static void calculate_font_coords(gl_t *gl,
GLfloat font_vertex[8], GLfloat font_tex_coords[8]) GLfloat font_vertex[8], GLfloat font_vertex_dark[8], GLfloat font_tex_coords[8])
{ {
GLfloat lx = g_settings.video.msg_pos_x; GLfloat lx = g_settings.video.msg_pos_x;
GLfloat hx = (GLfloat)gl->font_last_width / gl->vp_width + lx; GLfloat hx = (GLfloat)gl->font_last_width / gl->vp_width + lx;
@ -764,6 +772,14 @@ static void calculate_font_coords(gl_t *gl,
font_vertex[6] = hx; font_vertex[6] = hx;
font_vertex[7] = ly; font_vertex[7] = ly;
GLfloat shift_x = 2.0f / gl->vp_width;
GLfloat shift_y = 2.0f / gl->vp_height;
for (unsigned i = 0; i < 4; i++)
{
font_vertex_dark[2 * i + 0] = font_vertex[2 * i + 0] - shift_x;
font_vertex_dark[2 * i + 1] = font_vertex[2 * i + 1] - shift_y;
}
lx = 0.0f; lx = 0.0f;
hx = (GLfloat)gl->font_last_width / gl->font_tex_w; hx = (GLfloat)gl->font_last_width / gl->font_tex_w;
ly = 1.0f - (GLfloat)gl->font_last_height / gl->font_tex_h; ly = 1.0f - (GLfloat)gl->font_last_height / gl->font_tex_h;
@ -785,15 +801,14 @@ static void gl_render_msg(gl_t *gl, const char *msg)
return; return;
GLfloat font_vertex[8]; GLfloat font_vertex[8];
GLfloat font_vertex_dark[8];
GLfloat font_tex_coords[8]; GLfloat font_tex_coords[8];
// Deactivate custom shaders. Enable the font texture. // Deactivate custom shaders. Enable the font texture.
gl_shader_use(0); gl_shader_use(0);
set_viewport(gl, gl->win_width, gl->win_height, false); set_viewport(gl, gl->win_width, gl->win_height, false);
glBindTexture(GL_TEXTURE_2D, gl->font_tex); glBindTexture(GL_TEXTURE_2D, gl->font_tex);
glVertexPointer(2, GL_FLOAT, 0, font_vertex);
glTexCoordPointer(2, GL_FLOAT, 0, font_tex_coords); glTexCoordPointer(2, GL_FLOAT, 0, font_tex_coords);
glColorPointer(4, GL_FLOAT, 0, gl->font_color);
// Need blending. // Need blending.
// Using fixed function pipeline here since we cannot guarantee presence of shaders (would be kinda overkill anyways). // Using fixed function pipeline here since we cannot guarantee presence of shaders (would be kinda overkill anyways).
@ -818,8 +833,13 @@ static void gl_render_msg(gl_t *gl, const char *msg)
gl->font_last_width = geom.width; gl->font_last_width = geom.width;
gl->font_last_height = geom.height; gl->font_last_height = geom.height;
} }
calculate_font_coords(gl, font_vertex, font_tex_coords); calculate_font_coords(gl, font_vertex, font_vertex_dark, font_tex_coords);
glVertexPointer(2, GL_FLOAT, 0, font_vertex_dark);
glColorPointer(4, GL_FLOAT, 0, gl->font_color_dark);
glDrawArrays(GL_QUADS, 0, 4);
glVertexPointer(2, GL_FLOAT, 0, font_vertex);
glColorPointer(4, GL_FLOAT, 0, gl->font_color);
glDrawArrays(GL_QUADS, 0, 4); glDrawArrays(GL_QUADS, 0, 4);
// Go back to old rendering path. // Go back to old rendering path.