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(gl_raster) Extract some functions to improve clarity

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This commit is contained in:
Higor Eurípedes 2015-03-24 15:00:46 -03:00
parent 1041162d78
commit 7dc3b7a9be
1 changed files with 41 additions and 26 deletions
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67
gfx/drivers_font/gl_raster_font.c
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@ -152,6 +152,13 @@ static int get_message_width(gl_raster_t *font, const char *msg)
return delta_x;
}
static void draw_vertices(gl_t *gl, const struct gl_coords *coords)
{
gl->shader->set_coords(coords);
gl->shader->set_mvp(gl, &gl->mvp_no_rot);
glDrawArrays(GL_TRIANGLES, 0, coords->vertices);
}
static void render_message(gl_raster_t *font, const char *msg, GLfloat scale,
const GLfloat color[4], GLfloat pos_x, GLfloat pos_y, bool align_right)
{
@ -162,8 +169,7 @@ static void render_message(gl_raster_t *font, const char *msg, GLfloat scale,
GLfloat font_vertex[2 * 6 * MAX_MSG_LEN_CHUNK];
GLfloat font_color[4 * 6 * MAX_MSG_LEN_CHUNK];
gl_t *gl = font->gl;
glBindTexture(GL_TEXTURE_2D, font->tex);
struct gl_coords coords;
msg_len_full = strlen(msg);
msg_len = min(msg_len_full, MAX_MSG_LEN_CHUNK);
@ -183,10 +189,6 @@ static void render_message(gl_raster_t *font, const char *msg, GLfloat scale,
while (msg_len_full)
{
/* Rebind shaders so attrib cache gets reset. */
if (gl->shader && gl->shader->use)
gl->shader->use(gl, GL_SHADER_STOCK_BLEND);
for (i = 0; i < msg_len; i++)
{
int off_x, off_y, tex_x, tex_y, width, height;
@ -217,25 +219,42 @@ static void render_message(gl_raster_t *font, const char *msg, GLfloat scale,
delta_y -= glyph->advance_y;
}
gl->coords.tex_coord = font_tex_coords;
gl->coords.vertex = font_vertex;
gl->coords.color = font_color;
gl->coords.vertices = 6 * msg_len;
gl->shader->set_coords(&gl->coords);
gl->shader->set_mvp(gl, &gl->mvp_no_rot);
glDrawArrays(GL_TRIANGLES, 0, 6 * msg_len);
coords.tex_coord = font_tex_coords;
coords.vertex = font_vertex;
coords.color = font_color;
coords.vertices = 6 * msg_len;
coords.lut_tex_coord = gl->coords.lut_tex_coord;
draw_vertices(gl, &coords);
msg_len_full -= msg_len;
msg += msg_len;
msg_len = min(msg_len_full, MAX_MSG_LEN_CHUNK);
}
}
/* Post - Go back to old rendering path. */
gl->coords.vertex = gl->vertex_ptr;
gl->coords.tex_coord = gl->tex_info.coord;
gl->coords.color = gl->white_color_ptr;
gl->coords.vertices = 4;
static void setup_viewport(gl_raster_t *font, bool full_screen)
{
gl_t *gl = font->gl;
gl_set_viewport(gl, gl->win_width, gl->win_height, full_screen, false);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
glBindTexture(GL_TEXTURE_2D, font->tex);
if (gl->shader && gl->shader->use)
gl->shader->use(gl, GL_SHADER_STOCK_BLEND);
}
static void restore_viewport(gl_t *gl)
{
glBindTexture(GL_TEXTURE_2D, gl->texture[gl->tex_index]);
glDisable(GL_BLEND);
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
}
static void gl_raster_font_render_msg(void *data, const char *msg,
@ -293,11 +312,7 @@ static void gl_raster_font_render_msg(void *data, const char *msg,
drop_mod = 0.3f;
}
gl_set_viewport(gl, gl->win_width, gl->win_height,
full_screen, false);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
setup_viewport(font, full_screen);
if (drop_x || drop_y)
{
@ -310,10 +325,10 @@ static void gl_raster_font_render_msg(void *data, const char *msg,
x + scale * drop_x / gl->vp.width, y +
scale * drop_y / gl->vp.height, align_right);
}
render_message(font, msg, scale, color, x, y, align_right);
glDisable(GL_BLEND);
gl_set_viewport(gl, gl->win_width, gl->win_height, false, true);
restore_viewport(gl);
}
static const struct font_glyph *gl_raster_font_get_glyph(
@ -331,5 +346,5 @@ gl_font_renderer_t gl_raster_font = {
gl_raster_font_free_font,
gl_raster_font_render_msg,
"GL raster",
gl_raster_font_get_glyph,
gl_raster_font_get_glyph
};