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Fixed orientation and color when rendering to texture
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@slouken
slouken committed Jun 22, 2012
1 parent 3e77047 commit 6cc5530
Showing 1 changed file with 74 additions and 62 deletions.
136 changes: 74 additions & 62 deletions src/render/opengles2/SDL_render_gles2.c
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Expand Up @@ -833,7 +833,7 @@ GLES2_SelectProgram(SDL_Renderer *renderer, GLES2_ImageSource source, SDL_BlendM
break;
case GLES2_IMAGESOURCE_TEXTURE_ABGR:
ftype = GLES2_SHADER_FRAGMENT_TEXTURE_ABGR_SRC;
break;
break;
case GLES2_IMAGESOURCE_TEXTURE_ARGB:
ftype = GLES2_SHADER_FRAGMENT_TEXTURE_ARGB_SRC;
break;
Expand Down Expand Up @@ -906,15 +906,23 @@ GLES2_SetOrthographicProjection(SDL_Renderer *renderer)
projection[0][2] = 0.0f;
projection[0][3] = 0.0f;
projection[1][0] = 0.0f;
projection[1][1] = -2.0f / renderer->viewport.h;
if (renderer->target) {
projection[1][1] = 2.0f / renderer->viewport.h;
} else {
projection[1][1] = -2.0f / renderer->viewport.h;
}
projection[1][2] = 0.0f;
projection[1][3] = 0.0f;
projection[2][0] = 0.0f;
projection[2][1] = 0.0f;
projection[2][2] = 1.0f;
projection[2][2] = 0.0f;
projection[2][3] = 0.0f;
projection[3][0] = -1.0f;
projection[3][1] = 1.0f;
if (renderer->target) {
projection[3][1] = -1.0f;
} else {
projection[3][1] = 1.0f;
}
projection[3][2] = 0.0f;
projection[3][3] = 1.0f;

Expand Down Expand Up @@ -1027,11 +1035,21 @@ GLES2_SetDrawingState(SDL_Renderer * renderer)

/* Select the color to draw with */
locColor = rdata->current_program->uniform_locations[GLES2_UNIFORM_COLOR];
rdata->glUniform4f(locColor,
renderer->r * inv255f,
renderer->g * inv255f,
renderer->b * inv255f,
renderer->a * inv255f);
if (renderer->target &&
(renderer->target->format == SDL_PIXELFORMAT_ARGB8888 ||
renderer->target->format == SDL_PIXELFORMAT_RGB888)) {
rdata->glUniform4f(locColor,
renderer->b * inv255f,
renderer->g * inv255f,
renderer->r * inv255f,
renderer->a * inv255f);
} else {
rdata->glUniform4f(locColor,
renderer->r * inv255f,
renderer->g * inv255f,
renderer->b * inv255f,
renderer->a * inv255f);
}
return 0;
}

Expand Down Expand Up @@ -1248,45 +1266,42 @@ GLES2_RenderCopy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *s
/* Select the target texture */
locTexture = rdata->current_program->uniform_locations[GLES2_UNIFORM_TEXTURE];
rdata->glGetError();
rdata->glActiveTexture(GL_TEXTURE0);
rdata->glActiveTexture(GL_TEXTURE0);
rdata->glBindTexture(tdata->texture_type, tdata->texture);
rdata->glUniform1i(locTexture, 0);

/* Configure color modulation */
locModulation = rdata->current_program->uniform_locations[GLES2_UNIFORM_MODULATION];
rdata->glUniform4f(locModulation,
texture->r * inv255f,
texture->g * inv255f,
texture->b * inv255f,
texture->a * inv255f);
if (renderer->target &&
(renderer->target->format == SDL_PIXELFORMAT_ARGB8888 ||
renderer->target->format == SDL_PIXELFORMAT_RGB888)) {
rdata->glUniform4f(locModulation,
texture->b * inv255f,
texture->g * inv255f,
texture->r * inv255f,
texture->a * inv255f);
} else {
rdata->glUniform4f(locModulation,
texture->r * inv255f,
texture->g * inv255f,
texture->b * inv255f,
texture->a * inv255f);
}

/* Configure texture blending */
GLES2_SetBlendMode(rdata, blendMode);

GLES2_SetTexCoords(rdata, SDL_TRUE);

/* Emit the textured quad */
if (renderer->target) {
// Flip the texture vertically to compensate for the inversion it'll be subjected to later when it's rendered to the screen
vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)renderer->viewport.h-dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
vertices[3] = (GLfloat)renderer->viewport.h-dstrect->y;
vertices[4] = (GLfloat)dstrect->x;
vertices[5] = (GLfloat)renderer->viewport.h-(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)renderer->viewport.h-(dstrect->y + dstrect->h);
}
else {
vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
vertices[3] = (GLfloat)dstrect->y;
vertices[4] = (GLfloat)dstrect->x;
vertices[5] = (GLfloat)(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)(dstrect->y + dstrect->h);
}
vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
vertices[3] = (GLfloat)dstrect->y;
vertices[4] = (GLfloat)dstrect->x;
vertices[5] = (GLfloat)(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)(dstrect->y + dstrect->h);
rdata->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
texCoords[0] = srcrect->x / (GLfloat)texture->w;
texCoords[1] = srcrect->y / (GLfloat)texture->h;
Expand Down Expand Up @@ -1423,39 +1438,36 @@ GLES2_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect

/* Configure color modulation */
locModulation = rdata->current_program->uniform_locations[GLES2_UNIFORM_MODULATION];
rdata->glUniform4f(locModulation,
texture->r * inv255f,
texture->g * inv255f,
texture->b * inv255f,
texture->a * inv255f);
if (renderer->target &&
(renderer->target->format == SDL_PIXELFORMAT_ARGB8888 ||
renderer->target->format == SDL_PIXELFORMAT_RGB888)) {
rdata->glUniform4f(locModulation,
texture->b * inv255f,
texture->g * inv255f,
texture->r * inv255f,
texture->a * inv255f);
} else {
rdata->glUniform4f(locModulation,
texture->r * inv255f,
texture->g * inv255f,
texture->b * inv255f,
texture->a * inv255f);
}

/* Configure texture blending */
GLES2_SetBlendMode(rdata, blendMode);

GLES2_SetTexCoords(rdata, SDL_TRUE);

/* Emit the textured quad */
if (renderer->target) {
// Flip the texture vertically to compensate for the inversion it'll be subjected to later when it's rendered to the screen
vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)renderer->viewport.h-dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
vertices[3] = (GLfloat)renderer->viewport.h-dstrect->y;
vertices[4] = (GLfloat)dstrect->x;
vertices[5] = (GLfloat)renderer->viewport.h-(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)renderer->viewport.h-(dstrect->y + dstrect->h);
}
else {
vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
vertices[3] = (GLfloat)dstrect->y;
vertices[4] = (GLfloat)dstrect->x;
vertices[5] = (GLfloat)(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)(dstrect->y + dstrect->h);
}
vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
vertices[3] = (GLfloat)dstrect->y;
vertices[4] = (GLfloat)dstrect->x;
vertices[5] = (GLfloat)(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)(dstrect->y + dstrect->h);
if (flip & SDL_FLIP_HORIZONTAL) {
tmp = vertices[0];
vertices[0] = vertices[4] = vertices[2];
Expand Down

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