GLSL에 텍스처 전달

쉐이더에서 텍스처를 읽으려고합니다. 그리고 나는 단 하나의 스크린 만 얻는다 (단지 하나의 값이 읽혀지는 것 같다). 셰이더 선 선언 (64에서 74)에 주석을 달면 텍스처가 올바르게 표시됩니다. 그래서 정확하게 선언 된 것 같습니다. 여기 GLSL에 텍스처 전달

내 코드입니다 :

#!/usr/bin/python 

import sys 
import numpy as np 

try: 
    from OpenGL.GL  import * 
    from OpenGL.GL  import shaders 
    from OpenGL.GLU  import * 
    from OpenGL.GLUT import * 
except: 
    print '''ERROR: PyOpenGL not installed properly.''' 

################################################################################ 
# GLOBALS 

screen_w = 800 
screen_h = 600 


################################################################################ 
# SHADERS 

f_shader = """ 
#version 120 
uniform sampler2D texture_w; 
void main() { 
    vec2 c = vec2(int(gl_FragCoord[0]),int(gl_FragCoord[1])); 
    vec4 t = texture2D(texture_w, c); 
    gl_FragColor = t; 
} 
""" 

v_shader = """ 
#version 120 
void main() { 
    gl_FrontColor = gl_Color; 
    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; 
} 
""" 


################################################################################ 
# FUNCS 

def setup(): 
    glEnable(GL_DEPTH_TEST) 

    FRAGMENT_SHADER = shaders.compileShader(f_shader, GL_FRAGMENT_SHADER) 
    VERTEX_SHADER = shaders.compileShader(v_shader, GL_VERTEX_SHADER) 


    # Weight texture declaration 
    img_data = np.random.rand(screen_w, screen_h, 3) 
    img_data2 = img_data*255.0 

    texture = glGenTextures(1) 
    glPixelStorei(GL_UNPACK_ALIGNMENT,1) 
    glBindTexture(GL_TEXTURE_2D, texture) 
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, screen_w, screen_h, 0, GL_RGB,  GL_UNSIGNED_BYTE, img_data2) 
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP) 
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP) 
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR) 
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR) 


    shader = shaders.compileProgram(VERTEX_SHADER, FRAGMENT_SHADER) 
    shaders.glUseProgram(shader) 
    u_loc = glGetUniformLocation(shader, "texture_w") 
    glActiveTexture(GL_TEXTURE0) 
    glBindTexture(GL_TEXTURE_2D, texture) 
    glUniform1i(u_loc, 0) 



def display(): 
    "Global Display function" 
    glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) 

    glEnable(GL_TEXTURE_2D) 
    glColor(1,1,1) 
    glBegin(GL_TRIANGLES) 
    glTexCoord2f(0, 0) 
    glVertex(-1,-screen_w/float(screen_h),-2) 
    glTexCoord2f(1, 1) 
    glVertex(1,screen_w/float(screen_h),-2) 
    glTexCoord2f(0, 1) 
    glVertex(-1,screen_w/float(screen_h),-2) 

    glTexCoord2f(0, 0) 
    glVertex(-1,-screen_w/float(screen_h),-2) 
    glTexCoord2f(1, 0) 
    glVertex(1,-screen_w/float(screen_h),-2) 
    glTexCoord2f(1, 1) 
    glVertex(1,screen_w/float(screen_h),-2) 

    glEnd() 
    glutSwapBuffers() 


def reshape (w, h): 
    global screen_w, screen_h 
    glViewport (0, 0, w, h) 
    screen_w, screen_h = w, h 

    glMatrixMode (GL_PROJECTION) 
    glLoadIdentity() 
    glOrtho(-1, 1, -float(w)/float(h), float(w)/float(h), 1, 10) 
    glMatrixMode (GL_MODELVIEW) 


def keyboard(key, x, y): 
    global mode 
    if key == chr(27): 
     sys.exit(0) 
    elif key == 'f': 
     glutFullScreen() 
    else: 
     print key 


################################################################################ 
# MAIN 

glutInit(sys.argv) 
glutInitDisplayString("double rgba depth samples=4") 
glutInitWindowSize (screen_w, screen_h) 
glutCreateWindow ('Weights') 

setup() 

glutDisplayFunc(display) 
glutReshapeFunc(reshape) 
glutKeyboardFunc(keyboard) 
glutMainLoop()

사람이 어떤 생각을 가지고 있습니까?

출처

2016-06-02 mike

죄송합니다. 방금 답변을 찾았습니다. 다음은 쉐이더 라인은 내가 사용하는 것입니다 :

어쨌든 감사

f_shader = """ 
#version 120 
uniform sampler2D texture_w; 
void main() { 
    gl_FragColor = texture2D(texture_w, gl_TexCoord[0].xy); 
} 
""" 

v_shader = """ 
#version 120 
void main() { 
    gl_FrontColor = gl_Color; 
    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; 
    gl_TexCoord[0] = gl_MultiTexCoord0; 
} 
"""

마이크

출처

2016-06-02 14:54:39 mike

GLSL에 텍스처 전달

답변

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