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Implement water alpha.

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This commit is contained in:
Bill Currie 2012-01-28 21:20:34 +09:00
parent 57f920b9e9
commit 4734c5b64a
4 changed files with 23 additions and 2 deletions
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16
libs/video/renderer/glsl/glsl_bsp.c
View file

@ -132,6 +132,7 @@ static struct {
shaderparam_t colormap;
shaderparam_t texture;
shaderparam_t lightmap;
shaderparam_t color;
} quake_bsp = {
0,
{"mvp_mat", 1},
@ -140,6 +141,7 @@ static struct {
{"colormap", 1},
{"texture", 1},
{"lightmap", 1},
{"vcolor", 0},
};
static struct {
@ -150,6 +152,7 @@ static struct {
shaderparam_t palette;
shaderparam_t texture;
shaderparam_t realtime;
shaderparam_t color;
} quake_turb = {
0,
{"mvp_mat", 1},
@ -158,6 +161,7 @@ static struct {
{"palette", 1},
{"texture", 1},
{"realtime", 1},
{"vcolor", 0},
};
static struct {
@ -800,11 +804,15 @@ draw_elechain (elechain_t *ec, int matloc, int vertloc, int tlstloc)
static void
bsp_begin (void)
{
static quat_t color = { 1, 1, 1, 1 };
Mat4Mult (glsl_projection, glsl_view, bsp_vp);
qfglUseProgram (quake_bsp.program);
qfglEnableVertexAttribArray (quake_bsp.vertex.location);
qfglEnableVertexAttribArray (quake_bsp.tlst.location);
qfglDisableVertexAttribArray (quake_bsp.color.location);
qfglVertexAttrib4fv (quake_bsp.color.location, color);
qfglUniform1i (quake_bsp.colormap.location, 2);
qfglActiveTexture (GL_TEXTURE0 + 2);
@ -842,11 +850,17 @@ bsp_end (void)
static void
turb_begin (void)
{
static quat_t color = { 1, 1, 1, 1 };
Mat4Mult (glsl_projection, glsl_view, bsp_vp);
qfglUseProgram (quake_turb.program);
qfglEnableVertexAttribArray (quake_turb.vertex.location);
qfglEnableVertexAttribArray (quake_turb.tlst.location);
qfglDisableVertexAttribArray (quake_bsp.color.location);
color[3] = bound (0, r_wateralpha->value, 1);
qfglVertexAttrib4fv (quake_turb.color.location, color);
qfglUniform1i (quake_turb.palette.location, 1);
qfglActiveTexture (GL_TEXTURE0 + 1);
@ -1168,6 +1182,7 @@ R_InitBsp (void)
GL_ResolveShaderParam (quake_bsp.program, &quake_bsp.colormap);
GL_ResolveShaderParam (quake_bsp.program, &quake_bsp.texture);
GL_ResolveShaderParam (quake_bsp.program, &quake_bsp.lightmap);
GL_ResolveShaderParam (quake_bsp.program, &quake_bsp.color);
frag = GL_CompileShader ("quaketrb.frag", quaketurb_frag,
GL_FRAGMENT_SHADER);
@ -1178,6 +1193,7 @@ R_InitBsp (void)
GL_ResolveShaderParam (quake_turb.program, &quake_turb.palette);
GL_ResolveShaderParam (quake_turb.program, &quake_turb.texture);
GL_ResolveShaderParam (quake_turb.program, &quake_turb.realtime);
GL_ResolveShaderParam (quake_turb.program, &quake_turb.color);
vert = GL_CompileShader ("quakesky.vert", quakesky_vert, GL_VERTEX_SHADER);
frag = GL_CompileShader ("quakeski.frag", quakeskyid_frag,

3
libs/video/renderer/glsl/quakebsp.frag
View file

@ -4,6 +4,7 @@ uniform sampler2D lightmap;
varying vec2 tst;
varying vec2 lst;
varying vec4 color;
void
main (void)
@ -12,5 +13,5 @@ main (void)
float light = texture2D (lightmap, lst).r;
float col;
gl_FragColor = texture2D (colormap, vec2 (pix, light * 4.0));
gl_FragColor = texture2D (colormap, vec2 (pix, light * 4.0)) * color;
}

3
libs/video/renderer/glsl/quakebsp.vert
View file

@ -1,10 +1,12 @@
uniform mat4 mvp_mat;
attribute vec4 vcolor;
attribute vec4 tlst;
attribute vec4 vertex;
varying vec2 tst;
varying vec2 lst;
varying vec4 color;
void
main (void)
@ -12,4 +14,5 @@ main (void)
gl_Position = mvp_mat * vertex;
tst = tlst.st;
lst = tlst.pq;
color = vcolor;
}

3
libs/video/renderer/glsl/quaketrb.frag
View file

@ -3,6 +3,7 @@ uniform sampler2D texture;
uniform float realtime;
varying vec2 tst;
varying vec4 color;
const float SPEED = 20.0;
const float CYCLE = 128.0;
@ -27,5 +28,5 @@ main (void)
st = turb_st (tst, realtime);
pix = texture2D (texture, st).r;
gl_FragColor = texture2D (palette, vec2 (pix, 0.0));
gl_FragColor = texture2D (palette, vec2 (pix, 0.0)) * color;
}